四川达州市大竹县文星中学2014-2015学年高二5月月考英语试题 (Word版含答案)
四川省达州市大竹县文星中学2020学年高二英语3月月考试题(无答案)
英语第I卷（选择题）一、单项选择：共15题每题1分共15分1．Having signed the agreement on the ceasefire, both sides have _____ it. In other words, neither of the two sides have broken the agreement so far.A.ignoredB.assessedC.obtainedD.observed2．Mary, along with her parents, _________to the countryside to visit her grandparents every weekend.A.goB. goesC. wentD. gone3．From that day on, I promised myself that whenever I am in a situation (境况)___ I can help others the way ____ this person helped me, I will follow this example.A.which; whichB.where; thatC.that; whichD.where; where4．The little boy with an overcoat felt grateful _________ us for our letting him _______the game.A.for; join inB.to; to join inC.with; joinD.to; join in5．I don’t think she is a nice woman; I am _____ her empty talk.A.grateful forB.tired ofC.crazy aboutD.concerned about6．The teacher with the students_______ discussing the films_______ the subjects are science fictions.A.are; whoseB.are; of whichC.is; of whichD.is; whose7．Don’t defend him any more. It’s obvious that he ______ destroyed the fence of the garden even without apology.A.accidentallyB.carelesslyC.deliberatelyD.clumsily8．A hot cup of tea on such a cold night was a real ____ to me.A.respectB.momentfortD.fortune9．—Is everyone here?—Not yet… Look, there ______ the rest of our guests.eesC.is comingD.are coming 10．I like swimming, while what my brother enjoys _________.A.playing basketballB.to play basketballC.plays basketballD.is playing basketball11．No one in the department but Tom and I___________ that the director is going to resign．A.knowB.am to knowC.knowsD.have known12．I’m sharing my experiences in hopes that other write rs can learn from my success and fault, and of course, to ________ interest in the book. A.gather B.generate C.enlarge D.explore13．Being most potential, the Wuchang Lake is being ______ into a tourist attraction.A.adoptedB.admiredC.developedD.preferred14．The lead singer was ill and couldn’t sing that night, and her ______ didn’t perform well, which made the audience disappointed.A.agentB.attitudeC.substituteD.Institute15．He has donated some money to those who________ in poverty, which _______ of great help.A.live, areB.lives, areC.live, isD.lives, isAlthough substances can feel good at first, they can ultimately 26 a lot of harm to the body and brain. Drinking alcohol, smoking tobacco, taking illegal drugs, and sniffing glue can all cause serious 27 to the human body. Some drugs 28 impair a person's ability to make healthy choices and decisions. Teens who drink, for example, are more likely to get 29 in dangerous situations.People take drugs just for the 30 they believe they can 31 . Often it's because someone tried to convince them that drugs would make them feel good or that they'd have a better time if they 32 them. The truth is, drugs don't solve problems. Drugs simply 33 feelings and problems. When a drug 34 off, the feelings and problems remain --- or become 35 . Drugs can ruin every aspect of a person's life.16．A.helps B.helped C.helping D.help17．A.legal B.illegal C.unlegal D.legally18．A.good B.well C.bad D.badly19．A.manner B.manners C.means D.way20．A.onto B.into C.on D.of21．A.parts B.part C.parting D.impart22．A.allusions B.feelings C.senses D.thinkings23．A.feeling B.will C.happiness D.pain24．A.looking B.depending C.taking D.going25．A.basing B.basis C.basic D.based26．A.do B.give C.send D.take27．A.destroy B.harm C.ruin D.damage28．A.several B.severely C.sensely D.selectingly29．A.involving B.involve C.involved D.to involve30．A.pleasing B.pleasant C.pleased D.pleasure31．A.bring B.fetch C.take D.get32．A.take B.taking C.took D.taken33．A.clear B.hide e D.provide34．A.watches B.wipes C.wears D.weeps35．A.bad B.badly C.worst D.worse三、阅读理解：共20题每题2分共40分AIn a class this past December, after I wrote some directions on the board for students about their final examination, one young woman quickly took a picture of the board using her smart phone. When I looked in her direction, she apologized: “Sorry. Was it wrong to take a picture?”“I can’t read my own handwriting ,”the young woman explained.“It’s best if I take a picture of your writing so I can understand the notes.”That remark started a class-wide conversation about taking a picture instead of taking notes. For those in the photo-taking camp, motivations extendedbeyond their inability to comprehend their own handwriting. Some took pictures of notes because they knew their phone was a safe place to store material. They might lose paper, they reasoned, but they wouldn’t lose their phones. Some took photos because they wanted to record exactly the manner in which I had noted information on the board. Others told me that during class they liked to be able to listen to the discussion attentively.Yet the use of cameras as note takers, though it may be convenient, does raise significant questions for the classroom. Is a picture an effective replacement for the process of note-taking?Instructors encourage students to take notes because the act of doing so is more than merely recording necessary information—it helps prepare the way for understanding. Encouraging students to take notes may be an old-fashioned instr uctional method, but just because a method has a long history doesn’t mean it’s out of date. Writing things down engages a student’s brain in listening, visual, and kinesthetic(触觉的)learning—a view supported by a longstanding research. The act of writing down information enables a person to begin committing it to memory, and to process and combine it, establishing the building blocks of learning new concepts.Taking a picture does indeed record the information, but it deletes some of the necessary mental engagement that taking notes employs. So can the two be equally effective?I’m not sure how to measure the effectiveness of either method. For now, I allow students to take notes however they see fit—handwritten or photographed—because I figure that some notes, no matter the method of note-taking, are better than none.36．The woman apologized in the class because she____.A.took a picture of the boardB.missed the teachers’ directionsC.had the bad handwritingD.disturbed other students’ learning 37．Students refuse to take notes by hand because_____.A.they are unable to take notesB.they are more likely to lose notesC.they are interested in using their phonesD.they have a good memory of teachers’ instructions38．According to the passage, taking notes by hand_______.A.requires students to think independentlyB.is unsuitable for students to learn new ideasC.helps students actively participate in learningD.proves to be an old and useless learning method39．What’s the author’s opinion towards taking notes by phones?A.Supportive.B.Neutral.C.Doubtful.D.Disapproving.BOne day while shopping in a small town in southern California, it was my misfortune to be approached by a clerk whose personality contradicted mine. He seemed most unfriendly and not at all concerned about my intended purchase.I bought nothing, and marched angrily out of the store. My anger toward that grew with each step. Outside, standing at the corner, was a dark-complexionyoung man in his early twenties. His expressive brown eyes met and held mine, and in the next instant a beautiful, dazzling smile covered his face. I gave in immediately. The magnetic power of that shining smile drove away all bitterness within me, and I found the muscles in my own face happily responding. “Beautiful day, isn’t it?” I remarked, in passing. Then, suddenly something inside me sent me turning back. “I really owe you a debt of gratitude,” I said softly. His smile deepened, but he made no attempt to answer. A Mexican woman and two men were standing nearby. The woman stepped forward and eyed me inquiringly. “Carlos, he no speak English,” she volunteered. “You want I should tell him something?” In that moment I felt transformed. Carlos’ smile had made a big person of me. My friendliness and good will toward a ll mankind stood ten feet tall. “Yes,” my reply was enthusiastic and sincere, “tell him I said ‘Thank you!’” “Thank you?” The woman seemed slightly puzzled. I gave her arm a friendly pat as I turned to leave. “Just tell him that,” I insisted. “He’ll unders tand. I am sure!” Oh, what a smile can do! Although I have never seen that young man again, I shall never forget the lesson he taught me that morning.From that day on, I became smile –conscious, and I practice that diligently, anywhere and everywhere, with everybody. When I got excited in traffic, taking the right–of–way (公路用地) from the other car with my stupid mistake, I’d smile and shrug my shoulders apologetically. This action on my part would always draw a good–natured smile in return. If the other fellow was at fault – and if I could remember my resolution in time! –he’d get a broad smile of understanding. This took a bit of doing at first. I’ll admit it wasn’t always easy, but it was fun. The results were sometimes amazing. Many times, a broad, friendly smile would completely turn aside ill–feeling and tension. I’m wondering now how many tragic accidents could be avoidedon our overcrowded highways, if every driver remembered to smile! 40．The author got angry while shopping one day because .A.of the clerk’s unfriendliness and lack of concernB.of her misfortuneC.she failed to purchase what she intendedD.a dark–complexion young man laughed at her41．From the conversation between the author and the Mexican woman, we can infer that the woman .A.was well–educated but unwilling to help othersB.was able to speak EnglishC.knew some English and was ready to help othersD.was familiar with the young man42．In the author’s opi nion, if all people remembered to smile when driving, .A.many traffic accidents could be avoidedB.they would receive a good natural smile in returnC.they could get a broad smile of understandingD.they wouldn’t feel any tension43．The best title for this passage could be .A.The Art of SmilingB.The Universal LanguageC.The Power of LoveD.The Magic Power of FriendshipCIt must have been around nine O’clock when I drove back home from work because it was already dark. As I came near to the gates I turned off the headlamps of the car so as to prevent the beam(光) from swinging(摇摆)in through the window and waking Jack, who shared the house with me. But needn’t havedone so, I noticed that his light was still on, so he was awake anyway--- unless he had fallen asleep while reading. I put the car away and went up the steps, Then I opened the door quietly and went to Jack’s room. He was in bed awake but he didn’t even turn towards me.“What’s up, Jack?” I said.“For God’s sake(看在上帝面上), don’t make a noise,” he said.The way he spoke reminded me of someone in pain who is afraid to talk in case he does himself a serious injury(伤害).“Take your shoes off, Neville,” Jack said.I thought that he must be ill and that I had better humour (迁就)him to keep him happy, “There’s a snake here” he explained, “It’s asleep between the sheets. I was lying on my back reading when I saw it. I knew that moving was out of the question. I couldn’t have moved even if I’d wanted to .”I realized that he was serious. “I wa s relying on you to call a doctor as soon as you came home.” Jack went on.” It hasn’t bitten me yet but I daren’t do anything to upset it. It might wake up. I’m sick of this,” he said, “I took it for granted that you would have come home an hour ago.”There was no time to argue or apologize for being late. I looked at him as encouragingly as I could and went out to telephone the doctor.44．The underlined phrase“ out of the question ”means _______.A.impossibleB.no problemC.no doubtD.without difficulty 45．Which of the following statements is NOT true according to the passage?A.Neville and Jack lived in the same houseB.Neville thought that Jack had fallen illC.Neville really believed that Jack was not making a jokeD.Neville refused to argue or to make an apology for coming late 46．The reason why Neville thought that Jack must be ill is that Jack _______.A.asked Neville to take off his shoesB.made a gesture to show the presence of the snakeC.was afraid to upset the snake sleeping between the sheetsD.behaved strangely as if he was badly hurt47．According to the passage, Neville should have been home at _______. A.7p. m B.8p. m C.9p. m D.midnightDBUDAPEST, HUNGARY –- At Eotvos Lorand University's Department of Ethnology, visitors are usually greeted not by a security guard, but by a delegation of friendly mongrels, tails wagging. Dogs have the run of the place. They play in classrooms, visit faculty members in their offices, or nap in the laboratories. Animals here are no surprise --- ethnology is the zoological study of animal behavior --- but the total lack of cages is.“If you were studying human behavior, you wouldn’t k eep your subjects in a cage for 20 years and then ask them some questions.” asks research fellow Adam Miklosi, who leads much of the research here into the cognitive abilities of man's best friend.Until recently, domestication was thought to have dulled d ogs’ intelligence. Studies in the early 1980s showed that wolves, from which dogs probably descended, can unlock a gate after watching a human do it once, while dogs remained stumped after watching repeatedly.Two years ago, some graduate students were given either a puppy or a wolf cub to raise. They fed the animals by hand, coddling and doting on them. At five weeks, each cub was placed in a room containing an adult and the student who had raised the cub. Both sat motionless. But while the wolf cubs merely sniffed both humans before climbing into the student's lap to sleep, thepuppies yipped at their caregivers, licking their hands and trying to establish contact.Three months later, the canines were given the opportunity to try to remove a piece of meat from under a cage by pulling on a rope in the presence of their caregiver. Dogs and wolves both mastered this promptly. Then the rope was anchored, making it impossible to obtain the meat. The dogs tried a couple of times, and then turned to their masters for assistance or cues. The wolves ignored their caregivers, yanking on the rope until exhausted.Dogs are very motivated to cooperate with and behave like people. That's why dogs can do things no other animal can do.48．What is ethnology according to the article?A.It is a science on the research into nature.B.It is a branch of social science.C.It is the zoological study of animal behaviors.D.It is the study of the behaviors of living things.49．What does Adam Miklosi mean according to his words in paragraph 2?A.If we want to research human behaviors, we should keep the subjects trapped.B.If we want to research the behaviors of an animal, we should let them out of cage and do something.C.If we want to do research, we should first ask the subjects we research some questions.D.If we want to ask what we research some questions, we should keep it in a cage.50．What is the meaning of the underlined word “domestication” in paragraph 3?A.Being raised at home by human beings.B.Living in the wild.C.Doing household jobs.D.Enjoy home duties and pleasures.51．According to the study, why can the dogs be smarter than the wolves?A.Because the wolves were afraid of human beings and were not able to be tamed.B.Because the dogs did it cleverly by accident, not from the instinct.C.Because the wolves were frightened by the dogs and didn’t dare to compete for the meat, only standing there yanking.D.Because the dogs could be motivated to find some ways to cooperate with people to get help.EObese Americans are increasingly proving too fat to fit into scanners or their fat gets in the way of X-rays and ultrasounds, according to a study. Researchers found that the number of patients who had inconclusive test results had doubled over 15 years.Dr Raul Uppot and his team analyzed all the radiology examinations performed at a Massachusetts hospital between 1989 and 2020, looking for records labeled “limited by body habitus” --- meaning the patient's size hampered the quality of the test. They found that while 0.10 per cent of inconclusive exams were due to patient size in 1989, the figure had climbed to 0.19 per cent by 2020, despite advances in technology. It is estimated that 66 per cent of adults in the US are overweight, obese or morbidly obese, while there are 12.5 million overweight children and adolescents. The team said CT and MRI scans could cause problems for obese patients because there were weight limitations on the imaging table and the size of the opening on the imager could be too small for them to get in.Ultrasound beams and X-rays can also be hindered by fat and fail to produce clear pictures of the organs being examined. Standard CT tables in the US can take patients weighing up to 450lbs, while MRI machines can usually obtaindiagnostic-quality images in patients weighing up to 350lbs. The team, writing in the journal Radiology, warned that incomplete examinations because of obesity could have serious consequences, such as misdiagnosis or the failure to find a diagnosis at all.Dr Uppot, a staff radiolog ist at MGH, said: “Americans need to know that obesity can hinder their medical care when they enter a hospital.” He added: “In the short term, the medical community must accommodate these patients by investing in technology to help them. In the long term, this country must make cultural shifts that promote more exercise and a healthier diet.”52．The article mainly tells us that ____.A.American patients hate the X-rays.B.American patients like to be examined by X-rays.C.American patients’ sizes hamper th e quality of the radiology examinations.D.American patients are not suitable for the scanners.53．Why can CT and MKI scans cause problems for the obese patients?A.Because the obese patients are too wide to get in the rooms where the scanners are laid.B.Because there are weight limitations on the imaging table.C.Because the size of the opening on the imager can be too small for them to get in.D.Both B and C54．According to the research of Dr. Uppot’s team, what was the serious consequence caused by obesity?A.Misdiagnosis.B.Failure to go out of the scanner.C.The destruction of the scanner.D.Loss of money.55．What can be inferred from the article?A.Americans like to be fat and big.B.Americans should pay attention to their medical care.C.Americans should improve their views on exercise and a healthier diet.D.Americans hospitals should not look down upon these obese patients.四、七选五：共5题每题2分共10分根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
四川省达州市大竹县文星中学2015-2016学年高二上学期12月月考数学试卷 含解析
2015-2016学年四川省达州市大竹县文星中学高二（上)12月月考数学试卷一、单选题1．若a＜b＜0,下列不等式成立的是()A．a2＜b2B．a2＜ab C．D．2．某同学在一次综合性测试中语文、数学、英语、科学、社会5门学科的名次在其所在班级里都不超过3(记第一名为1，第二名为2,第三名为3,依此类推且没有并列名次情况）,则称该同学为超级学霸，现根据不同班级的甲、乙、丙、丁四位同学对一次综合性测试名次数据的描述，一定可以推断是超级学霸的是（）A．甲同学:平均数为2，中位数为2B．乙同学：中位数为2，唯一的众数为2C．丙同学：平均数为2，标准差为2D．丁同学：平均数为2，唯一的众数为23．若直线=1与圆x2+y2=1有公共点，则（)A．a2+b2≤1 B．a2+b2≥1 C．D．4．在同一坐标系中，方程a2x2+b2y2=1与ax+by2=0（a＞b＞0)的曲线大致是(）A．B．C．D．5．在△ABC中,若sin2A+sin2B＜sin2C，则△ABC的形状是（)A．锐角三角形B．直角三角形C．钝角三角形D．不能确定6．在等差数列｛a n｝中，其前n项和是S n，若S15＞0,S16＜0，则在，，…，中最大的是（)A．B．C．D．7．下列说法正确的是（)A．命题“∀x∈R,e x＞0”的否定是“∃x∈R，e x＞0”B．命题“已知x，y∈R，若x+y≠3，则x≠2或y≠1"是真命题C．“x2+2x≥ax在x∈［1，2]上恒成立”⇔“（x2+2x）min≥（ax）max在x∈[1，2]上恒成立"D．命题“若a=﹣1，则函数f(x）=ax2+2x﹣1只有一个零点”的逆命题为真命题8．已知命题p：∃x∈R，使x2+2x+5≤4;命题q：当时，f（x）=sinx+的最小值为4．下列命题是真命题的是（）A．p∧（￢q）B．（￢p）∧（￢q）C．（￢p）∧q D．p∧q9．数列｛a n}中，已知对任意n∈N＊，a1+a2+a3+…+a n=3n﹣1，则a12+a22+a32+…+a n2等于（）A．(3n﹣1）2B．C．9n﹣1 D．10．已知函数f（x）=（sinx+cosx）cosx，则下列说法正确的为（)A．函数f(x）的最小正周期为2πB．f（x)的最大值为C．f(x）的图象关于直线x=﹣对称D．将f(x)的图象向右平移，再向下平移个单位长度后会得到一个奇函数的图象11．设圆（x+1）2+y2=25的圆心为C，A(1，0）是圆内一定点，Q为圆周上任一点．线段AQ的垂直平分线与CQ的连线交于点M,则M的轨迹方程为（)A．B．C．D．12．已知f（x）=（）x﹣log3x，实数a、b、c满足f（a)•f（b）•f（c）＜0，且0＜a＜b＜c,若实数x0是函数f（x）的一个零点,那么下列不等式中，不可能成立的是（）A．x0＜a B．x0＞b C．x0＜c D．x0＞c二、填空题13．某班级有50名学生，现要采取系统抽样的方法在这50名学生中抽出10名学生,将这50名学生随机编号1～50号,并分组，第一组1～5号，第二组6~10号，…，第十组46～50号，若在第三组中抽得号码为12的学生，则在第八组中抽得号码为的学生．14．已知直线l:x﹣y+3=0被圆C:（x﹣a）2+(y﹣2）2=4截得的弦长为2，则a 的值为．15．直线（2+λ）x+（λ﹣1）y﹣2λ﹣1=0经过的定点坐标为．16．如果三棱锥A﹣BCD的底面BCD是正三角形,顶点A在底面BCD上的射影是△BCD的中心，则这样的三棱锥称为正三棱锥．给出下列结论：①正三棱锥A﹣BCD中必有AB⊥CD，BC⊥AD，AC⊥BD;②正三棱锥A﹣BCD所有相对棱中点连线必交于一点；③当正三棱锥A﹣BCD所有棱长都相等时,该棱锥内切球和外接球半径之比为1：2；④若正三棱锥A﹣BCD的侧棱长均为2，侧面三角形的顶角为40°，过点B的平面分别交侧棱AC,AD于M，N,则△BMN周长的最小值等于．以上结论正确的是．（写出所有正确命题的序号)．三、解答题17．等差数列{a n｝中,a3=2,a11=2a5(I）求｛a n｝的通项公式；（Ⅱ)设b n=，求数列{b n}的前n项和S n．18．已知圆C的方程为x2+(y﹣4）2=4，点O是坐标原点，直线l：y=kx与圆C交于M，N两点．（1）求k的取值范围;（2)求弦MN中点G的轨迹方程，并求出轨迹的长度；（3)设Q（m，n)是线段MN上的点，且，请将n表示为m的函数，并求其定义域．19．设△ABC的内角A、B、C、所对的边分别为a、b、c,已知a=1，b=2,cosC=．（Ⅰ)求△ABC的周长；（Ⅱ）若f（x）=sin（2x+C），求f（)的值．20．如图ABCD是正方形，O是正方形的中心，PO⊥底面ABCD，E是PC的中点．求证：（1）PA∥平面BDE；（2）平面PAC⊥平面BDE．(3）若PO=1，AB=2,求四棱锥P﹣ABCD的体积．21．实数x，y满足圆的标准方程（x+1）2+（y﹣2）2=4（Ⅰ）求的最小值;（Ⅱ）求定点(1,0)到圆上点的最大值．22．已知等差数列{a n｝满足a3=3，a5=9；数列{b n｝的前n项和为S n，且满足．（Ⅰ）分别求数列｛a n}，{b n｝的通项公式；（Ⅱ)若对任意的恒成立,求实数k的取值范围．2015-2016学年四川省达州市大竹县文星中学高二（上）12月月考数学试卷参考答案与试题解析一、单选题1．若a＜b＜0,下列不等式成立的是（）A．a2＜b2B．a2＜ab C．D．【考点】不等关系与不等式．【分析】方法一:该题是选择题，可利用排除法，数可以是满足a＜b＜0任意数，代入后看所给等式是否成立，即可得到正确选项．方法二:比较大小可采用作差比较，一般步骤是作差、变形、定号，从而得到大小关系．【解答】解:方法一:若a＜b＜0，不妨设a=﹣2,b=﹣1代入各个选项，错误的是A、B、D，故选C．方法二:∵a＜b＜0∴a2﹣b2=（a﹣b）（a+b）＞0即a2＞b2，故选项A不正确;∵a＜b＜0∴a2﹣ab=a（a﹣b)＞0即a2＞ab，故选项B不正确；∵a＜b＜0∴﹣1=＜0即＜1，故选项C正确；∵a＜b＜0∴＞0即,故选项D不正确；故选C2．某同学在一次综合性测试中语文、数学、英语、科学、社会5门学科的名次在其所在班级里都不超过3(记第一名为1，第二名为2,第三名为3，依此类推且没有并列名次情况），则称该同学为超级学霸，现根据不同班级的甲、乙、丙、丁四位同学对一次综合性测试名次数据的描述，一定可以推断是超级学霸的是(）A．甲同学:平均数为2，中位数为2B．乙同学：中位数为2，唯一的众数为2C．丙同学：平均数为2，标准差为2D．丁同学:平均数为2，唯一的众数为2【考点】众数、中位数、平均数．【分析】根据平均数,中位数，众数,标准差的概念来对选项进行排除．【解答】解:A反例：甲同学语、数、英、科、社5门学科的名次依次为1，1，2，2，4．B反例:乙同学语、数、英、科、社5门学科的名次依次为1，2，2，2，5．C反例:丙同学语、数、英、科、社5门学科的名次若为1，1，1，1，6其标准差为2.2，或若为1,1,1，2，5其标准差为1.7，其余的标准差更小，所以没有符合条件的名次．D：丁同学语、数、英、科、社5门学科的名次依次只能为1，2，2，2,3．所以D是超级学霸．3．若直线=1与圆x2+y2=1有公共点，则()A．a2+b2≤1 B．a2+b2≥1 C．D．【考点】直线与圆的位置关系．【分析】用圆心到直线的距离小于或等于半径，可以得到结果．【解答】解：直线与圆有公共点，即直线与圆相切或相交得：d≤r，∴故选D．4．在同一坐标系中，方程a2x2+b2y2=1与ax+by2=0（a＞b＞0）的曲线大致是(）A．B．C．D．【考点】椭圆的定义；抛物线的定义．【分析】根据题意,a＞b＞0,可以整理椭圆a2x2+b2y2=1与抛物线ax+by2=0变形为标准形式，可以判断其焦点所在的位置，进而分析选项可得答案．【解答】解：由a＞b＞0,椭圆a2x2+b2y2=1，即+=1，焦点在y轴上；抛物线ax+by2=0,即y2=﹣x,焦点在x轴的负半轴上；分析可得，D符合，故选D．5．在△ABC中，若sin2A+sin2B＜sin2C,则△ABC的形状是（）A．锐角三角形B．直角三角形C．钝角三角形D．不能确定【考点】余弦定理的应用；三角形的形状判断．【分析】由sin2A+sin2B＜sin2C，结合正弦定理可得，a2+b2＜c2，由余弦定理可得CosC=可判断C的取值范围【解答】解：∵sin2A+sin2B＜sin2C,由正弦定理可得,a2+b2＜c2由余弦定理可得cosC=∴∴△ABC是钝角三角形故选C6．在等差数列{a n｝中，其前n项和是S n,若S15＞0，S16＜0，则在，,…,中最大的是（）A．B．C．D．【考点】等差数列的性质；等差数列的前n项和．【分析】由题意知a8＞0，a9＜0．由此可知＞0，＞0，…，＞0，＜0，＜0，＜0，所以在，,…，中最大的是．【解答】解:由于S15==15a8＞0，S16==8（a8+a9）＜0，所以可得a8＞0，a9＜0．这样＞0,＞0,…，＞0，＜0，＜0,…,＜0,而S1＜S2＜…＜S8，a1＞a2＞…＞a8，所以在，，…,中最大的是．故选B7．下列说法正确的是（）A．命题“∀x∈R，e x＞0”的否定是“∃x∈R，e x＞0”B．命题“已知x，y∈R，若x+y≠3，则x≠2或y≠1”是真命题C．“x2+2x≥ax在x∈［1，2］上恒成立”⇔“(x2+2x)min≥（ax）max在x∈［1,2］上恒成立”D．命题“若a=﹣1，则函数f(x）=ax2+2x﹣1只有一个零点”的逆命题为真命题【考点】命题的真假判断与应用．【分析】A中全称命题的否定是特称命题，并且一真一假；B中原命题与逆否命题是同真同假，写出它的逆否命题再判定真假；C、“x2+2x≥ax在x∈[1，2］上恒成立"转化为“（）min≥a max在x∈［1，2］上恒成立”；D、写出原命题的逆命题再判定真假．【解答】A、“∀x∈R，e x＞0”的否定是“∃x0∈R，e x≤0”；∴命题错误；B、∵x=2且y=1时，x+y=3是真命题；∴若x+y≠3，则x≠2或y≠1”是真命题；C、“x2+2x≥ax在x∈[1，2］上恒成立”⇔“（)min≥a max在x∈［1,2］上恒成立”，命题错误；D、“若a=﹣1，则函数f（x）=ax2+2x﹣1只有一个零点”的逆命题是:“f（x）=ax2+2x ﹣1有一个零点时，a=﹣1”,∵f（x）有一个零点时，a=﹣1或a=0；∴命题错误．故选：B．8．已知命题p:∃x∈R,使x2+2x+5≤4；命题q：当时，f（x）=sinx+的最小值为4．下列命题是真命题的是（）A．p∧（￢q）B．(￢p）∧(￢q）C．（￢p）∧q D．p∧q【考点】复合命题的真假．【分析】分别判断出p，q的真假，从而判断出复合命题的真假即可．【解答】解:关于命题p：∃x∈R，使x2+2x+5≤4，当x=﹣1时：命题成立,故p正确;关于命题q:当时，sinx＞0，∴f（x）=sinx+＞2=4，取不到4，故命题q是假命题；故选：A．9．数列｛a n｝中,已知对任意n∈N*，a1+a2+a3+…+a n=3n﹣1，则a12+a22+a32+…+a n2等于（)A．(3n﹣1）2B．C．9n﹣1 D．【考点】数列的求和．【分析】由a1+a2+a3+…+a n=3n﹣1，可求得a n,从而可知，利用等比数列的求和公式即可求得答案．【解答】解：∵a1+a2+a3+…+a n=3n﹣1，①∴a1+a2+a3+…+a n+1=3n+1﹣1，②=3n+1﹣3n=2×3n，②﹣①得：a n+1∴a n=2×3n﹣1．当n=1时，a1=31﹣1=2,符合上式，∴a n=2×3n﹣1．∴=4×9n﹣1,∴=4，=9，∴｛｝是以4为首项，9为公比的等比数列，∴a12+a22+a32+…+a n2==（9n﹣1）．故选B．10．已知函数f(x)=（sinx+cosx)cosx，则下列说法正确的为（）A．函数f(x）的最小正周期为2πB．f（x）的最大值为C．f（x)的图象关于直线x=﹣对称D．将f（x）的图象向右平移,再向下平移个单位长度后会得到一个奇函数的图象【考点】二倍角的余弦；两角和与差的正弦函数；函数y=Asin(ωx+φ）的图象变换．【分析】由三角函数恒等变换化简解析式可得f（x）=sin（2x+）+,分别求出其周期，最大值,对称轴即可判断A，B，C,由函数y=Asin（ωx+φ)的图象变换规律及正弦函数的性质即可判断D选项．【解答】解:∵f（x）=（sinx+cosx）cosx=sin2x+cos2x+=sin（2x+）+∴函数f（x）的最小正周期T=,A错误；f（x)的最大值为：，B错误;由2x+=kπ，解得f（x）的图象的对称轴为:x=，k∈Z,故C错误；将f（x）的图象向右平移,得到g（x）=sin2x+图象,再向下平移个单位长度后会得到h（x）=sin2x的图象，而h（x）是奇函数．故正确．故选：D．11．设圆（x+1）2+y2=25的圆心为C,A（1，0）是圆内一定点，Q为圆周上任一点．线段AQ的垂直平分线与CQ的连线交于点M，则M的轨迹方程为（）A．B．C．D．【考点】圆锥曲线的轨迹问题．【分析】根据线段中垂线的性质可得，|MA|=｜MQ｜,又|MQ｜+|MC|=半径5,故有｜MC|+|MA｜=5＞｜AC|，根据椭圆的定义判断轨迹椭圆，求出a、b值，即得椭圆的标准方程．【解答】解：由圆的方程可知，圆心C（﹣1，0)，半径等于5，设点M的坐标为(x，y ）,∵AQ的垂直平分线交CQ于M，∴｜MA|=｜MQ｜．又｜MQ｜+｜MC｜=半径5，∴｜MC|+|MA｜=5＞|AC|．依据椭圆的定义可得，点M的轨迹是以A、C 为焦点的椭圆，且2a=5,c=1,∴b=,故椭圆方程为=1,即．故选D．12．已知f（x)=（）x﹣log3x,实数a、b、c满足f(a）•f(b）•f(c）＜0，且0＜a ＜b＜c，若实数x0是函数f(x）的一个零点，那么下列不等式中，不可能成立的是（）A．x0＜a B．x0＞b C．x0＜c D．x0＞c【考点】函数零点的判定定理．【分析】f（x）=(）x﹣log3x在（0，+∞）上是减函数，即f（a）、f(b）、f（c）中一项为负，两项为正数；或者三项均为负数；【解答】解:∵f（x）=（)x﹣log3x在（0,+∞）上是减函数，0＜a＜b＜c，且f(a)f （b)f（c）＜0，∴f(a）、f（b)、f(c）中一项为负，两项为正数；或者三项均为负数；即：f（c）＜0，0＜f（b)＜f(a）；或f（a）＜f（b）＜f(c）＜0;由于实数x0是函数y=f（x）的一个零点，当f（c）＜0，0＜f（b）＜f（a）时，b＜x0＜c，此时B、C成立；当f(a)＜f（b)＜f（c）＜0时，x0＜a,此时A成立；综上可得，D不可能成立；故选：D．二、填空题13．某班级有50名学生，现要采取系统抽样的方法在这50名学生中抽出10名学生，将这50名学生随机编号1~50号，并分组，第一组1～5号，第二组6~10号，…，第十组46~50号,若在第三组中抽得号码为12的学生，则在第八组中抽得号码为37的学生．【考点】系统抽样方法．【分析】由题设知第八组的号码数比第三组的号码数大（8﹣3）×5,由此能求出结果．【解答】解：这50名学生随机编号1～50号，并分组，第一组1～5号,第二组6～10号，…，第十组46~50号，在第三组中抽得号码为12的学生,则在第八组中抽得号码为12+(8﹣3）×5=37．故答案为：37．14．已知直线l：x﹣y+3=0被圆C：（x﹣a）2+（y﹣2)2=4截得的弦长为2，则a的值为1或﹣3．【考点】直线和圆的方程的应用．【分析】利用弦长公式可得弦心距d=，再由点到直线的距离公式可得d=，由此求得a的值．【解答】解：由题意利用弦长公式可得弦心距d==,再由点到直线的距离公式可得d=，∴=,解得a=1，或a=﹣3,故答案为1或﹣3．15．直线（2+λ）x+（λ﹣1）y﹣2λ﹣1=0经过的定点坐标为（1，1）．【考点】过两条直线交点的直线系方程．【分析】由条件利用利用了m(ax+by+c）+（a′x+b′y+c′）=0 经过直线ax+by+c=0和直线a′x+b′y+c′=0的交点,可得结论．【解答】解:直线（2+λ）x+（λ﹣1）y﹣2λ﹣1=0，即直线(2x﹣y﹣1）+λ(x+y﹣2）=0,它一定经过2x﹣y﹣1=0 和x+y﹣2=0 的交点．由，求得，可得直线（2+λ）x+（λ﹣1）y﹣2λ﹣1=0经过的定点坐标为（1,1），故答案为:（1，1）．16．如果三棱锥A﹣BCD的底面BCD是正三角形，顶点A在底面BCD上的射影是△BCD的中心，则这样的三棱锥称为正三棱锥．给出下列结论:①正三棱锥A﹣BCD中必有AB⊥CD，BC⊥AD，AC⊥BD;②正三棱锥A﹣BCD所有相对棱中点连线必交于一点；③当正三棱锥A﹣BCD所有棱长都相等时，该棱锥内切球和外接球半径之比为1:2；④若正三棱锥A﹣BCD的侧棱长均为2，侧面三角形的顶角为40°，过点B的平面分别交侧棱AC，AD于M,N，则△BMN周长的最小值等于．以上结论正确的是①②④．（写出所有正确命题的序号)．【考点】棱锥的结构特征．【分析】根据正三棱锥的定义，对每个命题进行判断，即可得出结论．【解答】解：①正三棱锥A﹣BCD中，正三棱锥顶点A在底面BCD上的射影是△BCD的中心，必有AB⊥CD，BC⊥AD，AC⊥BD，正确；②利用平行四边形的性质，可得正三棱锥A﹣BCD所有相对棱中点连线必交于一点,正确；③当正三棱锥A﹣BCD所有棱长都相等时，该棱锥内切球和外接球半径之比为1：3，不正确；④若正三棱锥A﹣BCD的侧棱长均为2，一个侧面的顶角为40°，过点B的平面分别交侧棱AC,AD于M,N．则△BMN周长的最小值等于=2,故正确．故答案为①②④．三、解答题17．等差数列{a n｝中，a3=2，a11=2a5（I)求{a n}的通项公式；(Ⅱ)设b n=,求数列｛b n｝的前n项和S n．【考点】数列的求和．【分析】(Ⅰ）设等差数列｛a n}的公差为d，由等差数列的通项公式，得到首项和公差的方程组，解方程可得首项和公差，即可得到所求通项；（Ⅱ）求得b n===2（﹣），再由裂项相消求和，即可得到所求．【解答】解：（Ⅰ)设等差数列{a n｝的公差为d,由题意可得a1+2d=2，a1+10d=2（a1+4d）,解得，a1=1，d=，所以｛a n｝的通项公式为a n=（n+1）;（Ⅱ）b n===2（﹣），前n项和S n=2（1﹣+﹣+﹣+…+﹣)=2(1﹣)=．18．已知圆C的方程为x2+（y﹣4）2=4，点O是坐标原点,直线l：y=kx与圆C交于M，N两点．(1）求k的取值范围；（2）求弦MN中点G的轨迹方程，并求出轨迹的长度;（3）设Q（m，n）是线段MN上的点，且，请将n表示为m的函数，并求其定义域．【考点】直线和圆的方程的应用．【分析】（1）将y=kx代入x2+（y﹣4）2=4,消去y,可得x的方程,由判别式大于0，可得k的范围；(2)由OG⊥OM,可得G在以OC为直径的圆上，求得所求轨迹方程，再由两圆的方程相减可得交点坐标，求得弦长，可得圆心角，进而得到轨迹长度;(3）设出M,N的坐标，求得|OM|，｜OQ|，|ON｜的长,运用韦达定理,化简整理,注意k的范围的运用，即可得到所求函数式．【解答】解：（1）将y=kx代入x2+（y﹣4）2=4中，得（1+k2）x2﹣8kx+12=0．（＊)由△=（﹣8k）2﹣4（1+k2)×12＞0，得k2＞3．所以，k的取值范围是（﹣∞，）∪（，+∞）．（2）由OG⊥OM,可得G在以OC为直径的圆上，由C（0,4）,可得所求圆的圆心为（0，2），半径为2，即轨迹方程x2+（y﹣2）2=4 （在已知圆内），由x2+(y﹣4)2=4和x2+（y﹣2）2=4，相减可得,y=3，求得交点为（，3），(﹣，3），弦长为2,由圆的半径为2,可得圆心角为,则所求轨迹长度为；（3）因为M，N在直线l上，可设点M,N的坐标分别为（x1，kx1），(x2,kx2），则｜OM｜2=（1+k2）x12，|ON|2=（1+k2）x22，又|OQ|2=m2+n2=（1+k2)m2．由，得,即．由（＊）式可知，x1+x2=，x1x2=，所以．因为点Q在直线y=kx上,所以,代入中并化简，得5n2﹣3m2=36．由及k2＞3，可知0＜m2＜3，即m∈（,0)∪（0，）．根据题意，点Q在圆C内，则n＞0，所以．于是，n与m的函数关系为（m∈（，0)∪（0，））．19．设△ABC的内角A、B、C、所对的边分别为a、b、c,已知a=1，b=2，cosC=．（Ⅰ）求△ABC的周长；（Ⅱ）若f（x）=sin（2x+C）,求f（）的值．【考点】余弦定理;正弦定理．【分析】（Ⅰ）利用已知及余弦定理可求c,从而可求三角形的周长．（Ⅱ）利用同角三角函数基本关系式可求sinC，根据两角和的正弦函数公式即可求值．【解答】解：（Ⅰ)∵a=1，b=2，cosC=，∵c2=a2+b2﹣2abcosC=1+4﹣4×=4，∴解得：c=2∴△ABC的周长为a+b+c=1+2+2=5．…5分（Ⅱ)∵cosC=，∴sinC===…7分∴f（）=sin(+C）=sin cosC+cos sinC=×+×=．…11分20．如图ABCD是正方形，O是正方形的中心，PO⊥底面ABCD，E是PC的中点．求证：（1）PA∥平面BDE；(2)平面PAC⊥平面BDE．（3）若PO=1,AB=2，求四棱锥P﹣ABCD的体积．【考点】棱柱、棱锥、棱台的体积；平面与平面垂直的判定．【分析】（1）连接OE，OE∥PA，由直线与平面平行的判定定理，可证得PA∥平面BDE；(2)由PO⊥底面ABCD，可得PO⊥BD；底面为正方形，可得BD⊥AC，由直线和平面垂直的判定定理,可得BD⊥平面PAC，由面面垂直的判定定理，可证得平面PAC⊥平面BDE；=S ABCD×OP，求出四棱锥P﹣ABCD的体积．（3）利用V P﹣ABCD【解答】（1）证明：连接AC、OE，AC∩BD=O，在△PAC中,∵E为PC中点,O为AC中点，∴PA∥EO，又∵EO⊂平面EBD，PA⊄平面EBD,∴PA∥面BDE．…3分（2）证明:∵PO⊥底面ABCD,∴PO⊥BD．又∵BD⊥AC,∴BD⊥平面PAC．又BD⊂平面BDE,∴平面PAC⊥平面BDE．…7分（3）解：∵ABCD是正方形的中心,∴S ABCD=AB2=4∵PO⊥底面ABCD=S ABCD×OP=…11分∴V P﹣ABCD21．实数x，y满足圆的标准方程（x+1）2+（y﹣2）2=4（Ⅰ)求的最小值；（Ⅱ）求定点(1，0）到圆上点的最大值．【考点】圆的标准方程．【分析】(Ⅰ)表示的意义是圆上的点到E（4，0）这个点的连线的斜率，作出图形结合数形结合法能求出的最小值．（Ⅱ）求出圆的参数方程,利用两点间距离公式和三角函数性质能求出定点(1,0）到圆上点（﹣1+2cosθ，2+2sinθ）的距离的最大值．【解答】解：（Ⅰ)∵实数x，y满足圆的标准方程（x+1）2+（y﹣2）2=4，∴，∴，∴表示的意义是圆上的点到E（4,0）这个点的连线的斜率,那么看图可以知道圆上任何点和E的连线都落在BE和DE两条切线之间，那么其中斜率最小的就是DE这条切线了，设DE方程为y=k （x﹣4)，即kx﹣4k﹣y=0，则O到DE的距离即等于半径,即=2，解得k=0或k=﹣，即其最小值为﹣．∴的最小值为﹣．（Ⅱ)定点（1，0）到圆上点（﹣1+2cosθ，2+2sinθ)的距离：d===≤=2，∴定点（1，0）到圆上点的最大值为2+2．22．已知等差数列｛a n｝满足a3=3，a5=9;数列｛b n｝的前n项和为S n，且满足．（Ⅰ)分别求数列｛a n｝,{b n｝的通项公式；（Ⅱ）若对任意的恒成立,求实数k的取值范围．【考点】数列与不等式的综合;数列递推式．【分析】(I)利用等差数列与等比数列的通项公式、递推关系即可得出．（II）利用等比数列的求和公式可得S n，原不等式可转化为（•k≥3n﹣6对n∈N＊恒成立，化简利用数列的单调性即可得出．【解答】解：（I)由a5﹣a3=2d=6,得d=3,∴a n=3+（n﹣3）×3=3n﹣6．∴a n=3n﹣6．由S n+1=4S n﹣3S n﹣1,得S n+1﹣S n=3（S n﹣S n﹣1)，即b n+1=3b n（n≥2）．又（n∈N＊）,∴{b n}是等比数列，其中首相为b1=1，公比为3，∴．（II）,∴原不等式可转化为（•k≥3n﹣6对n∈N＊恒成立，∴对n∈N*恒成立．令．当n≤3时，c n﹣c n﹣1＞0即c n＞c n﹣1；当n≥3时,c n＜c n﹣1．∴当n=3时c n有最大值，最大值为，∴．2017年1月15日。
2014-2015年四川省达州市大竹县文星中学高二(下)期中数学试卷和答案
2014-2015学年四川省达州市大竹县文星中学高二（下）期中数学试卷一、选择题（本大题共12小题，每小题5分，共60分．在每小题给出的四个选项中，其中有且仅有一个是正确的．）1．（5分）为了得到y＝2sin2x的图象，可将函数y＝4sin（x+）•cos（x+）的图象（）A．右移个单位B．左移个单位C．右移个单位D．左移个单位2．（5分）已知R是实数集，M＝{x|＜1}，N＝{y|y＝+1}，N∩∁R M＝（）A．（1，2）B．[0，2]C．∅D．[1，2]3．（5分）设向量＝（1，cosθ）与＝（﹣1，2cosθ）垂直，则cos2θ等于（）A．B．C．0D．﹣14．（5分）已知A＝（1，﹣2），若向量与＝（2，﹣3）反向，||＝4，则点B的坐标为（）A．（10，7）B．（﹣10，7）C．（7，﹣10）D．（﹣7，10）5．（5分）若函数f（x）＝kx﹣ln x在区间（1，+∞）单调递增，则k的取值范围是（）A．（﹣∞，﹣2]B．（﹣∞，﹣1]C．[2，+∞）D．[1，+∞）6．（5分）下列不等式中，正确的是（）A．tan＜tan B．sin＞cos（﹣）C．sin（π﹣1）＜sin1°D．cos＜cos（﹣）7．（5分）已知向量＝（﹣2，2），＝（5，k）．若|+|不超过5，则k的取值范围是（）A．[﹣4，6]B．[﹣6，4]C．[﹣6，2]D．[﹣2，6]8．（5分）若平面向量与向量＝（﹣1，2）的夹角是180°，且||＝3，则＝（）A．（﹣3，6）B．（3，﹣6）C．（6，﹣3）D．（﹣6，3）9．（5分）设D，E，F分别为△ABC的三边BC，CA，AB的中点，则+＝（）A．B．C．D．10．（5分）设、、是非零向量，下列命题正确的是（）A．（•）•＝•（•）B．|﹣|2＝||2﹣2||||+||2C．若||＝||＝|+|，则与的夹角为60°D．若||＝||＝|﹣|，则与的夹角为60°11．（5分）图是函数y＝A sin（ωx+φ）（x∈R）在区间上的图象，为了得到这个函数的图象，只要将y＝sin x（x∈R）的图象上所有的点（）A．向左平移个单位长度，再把所得各点的横坐标缩短到原来的倍，纵坐标不变B．向左平移个单位长度，再把所得各点的横坐标伸长到原来的2倍，纵坐标不变C．向左平移个单位长度，再把所得各点的横坐标缩短到原来的倍，纵坐标不变D．向左平移个单位长度，再把所得各点的横坐标伸长到原来的2倍，纵坐标不变12．（5分）已知f（tan x）＝sin2x，则f（﹣1）的值是（）A．1B．﹣1C．D．0二、填空题（本大题共4个小题，每空4分，共16分，把正确答案填在题中横线上）13．（4分）的值为．14．（4分）已知命题p：∃x∈R，ax2+2x+1≤0．若命题p是假命题，则实数a的取值范围是．15．（4分）设α∈（0，），若sinα＝，则cos（α+）＝．16．（4分）给出下列命题：①存在实数α，使sinαcosα＝1，②函数y＝sin（+x）是偶函数；③直线x＝是函数y＝sin（2x+）的一条对称轴；④若α、β是第一象限的角，且α＞β，则sinα＞sinβ．其中正确命题的序号是．三、解答题（本大题共6个大题，共74分，解答应写出文字说明，证明过程或演算步骤）17．（12分）已知cos（π+α）＝，α为第三象限角．（1）求sinα，tanα的值；（2）求sin（α+），tan2α的值．18．（12分）条件p：A＝{a|不等式x2+2ax+4＞0在x∈R上恒成立}条件q：B＝{a|1＜}；（1）若k＝1，求A∩∁R B；（2）若￢p是￢q的充分不必要条件，求实数k的取值范围．19．（12分）已知向量＝（sin x，1），＝（A cos x，cos2x）（A＞0），函数f（x）＝•的最大值为6．（Ⅰ）求A；（Ⅱ）将函数y＝f（x）的图象像左平移个单位，再将所得图象各点的横坐标缩短为原来的倍，纵坐标不变，得到函数y＝g（x）的图象．求g（x）在[0，]上的值域．20．（12分）已知函数f（x）是定义在R上的奇函数，且它的图象关于直线x＝1对称．（1）证明：f（x）是周期为4的周期函数；（2）若f（x）＝（0＜x≤1），求x∈[﹣5，﹣4]时，函数f（x）的解析式．21．（12分）已知向量＝（sin B，1﹣cos B）与向量＝（2，0）的夹角为，其中A、B、C是△ABC的内角．（Ⅰ）求角B的大小；（Ⅱ）求sin A+sin C的取值范围．22．（14分）已知f（x）＝sin（π+ωx）sin（﹣ωx）﹣cos2ωx（ω＞0）的最小正周期为T＝π．（1）求f（）的值；（2）在△ABC中，角A、B、C所对应的边分别为a、b、c，若有（2a﹣c）cos B ＝b cos C，则求角B的大小以及f（A）的取值范围．2014-2015学年四川省达州市大竹县文星中学高二（下）期中数学试卷参考答案与试题解析一、选择题（本大题共12小题，每小题5分，共60分．在每小题给出的四个选项中，其中有且仅有一个是正确的．）1．（5分）为了得到y＝2sin2x的图象，可将函数y＝4sin（x+）•cos（x+）的图象（）A．右移个单位B．左移个单位C．右移个单位D．左移个单位【解答】解：函数＝2sin[2（x+）]＝，所以为了得到y＝2sin2x的图象，可将函数＝2sin[2（x+）]的图象，右移个单位．故选：C．2．（5分）已知R是实数集，M＝{x|＜1}，N＝{y|y＝+1}，N∩∁R M＝（）A．（1，2）B．[0，2]C．∅D．[1，2]【解答】解：∵M＝{x|＜1}＝{x|x＜0，或x＞2}，N＝{y|y＝+1}＝{y|y≥1 }，∁R M＝{x|0≤x≤2}，故有N∩∁R M＝{y|y≥1 }∩{x|0≤x≤2}＝[1，+∞）∩[0，2]＝[1，2]，故选：D．3．（5分）设向量＝（1，cosθ）与＝（﹣1，2cosθ）垂直，则cos2θ等于（）A．B．C．0D．﹣1【解答】解：∵＝（1，cosθ），＝（﹣1，2cosθ），且两向量垂直，∴•＝0，即﹣1+2cos2θ＝0，则cos2θ＝2cos2θ﹣1＝0．故选：C．4．（5分）已知A＝（1，﹣2），若向量与＝（2，﹣3）反向，||＝4，则点B的坐标为（）A．（10，7）B．（﹣10，7）C．（7，﹣10）D．（﹣7，10）【解答】解：∵A（1，﹣2），向量与＝（2，﹣3）反向，∴＝k，k＜0，∴||＝|k|•||，∴4＝|k|＝|k|•，∴|k|＝4，∵k＜0，∴k＝﹣4，∴＝﹣4（2，﹣3）＝（﹣8，12），∴＝+＝（1，﹣2）+（﹣8，12）＝（﹣7，10）．∴B的坐标是（﹣7，10）．故选：D．5．（5分）若函数f（x）＝kx﹣ln x在区间（1，+∞）单调递增，则k的取值范围是（）A．（﹣∞，﹣2]B．（﹣∞，﹣1]C．[2，+∞）D．[1，+∞）【解答】解：f′（x）＝k﹣，∵函数f（x）＝kx﹣lnx在区间（1，+∞）单调递增，∴f′（x）≥0在区间（1，+∞）上恒成立．∴k≥，而y＝在区间（1，+∞）上单调递减，∴k≥1．∴k的取值范围是：[1，+∞）．故选：D．6．（5分）下列不等式中，正确的是（）A．tan＜tan B．sin＞cos（﹣）C．sin（π﹣1）＜sin1°D．cos＜cos（﹣）【解答】解：A：＞0，＝＝﹣tan＜0则，故A错误∵＝，而y＝sin x在（0，）上单调递增，且∴sin即，故B错误C：由于y＝sin x在（0，）上单调递增，且，则sin（π﹣1）＝sin1＞sin1°，故C错误D：，∴，故D正确故选：D．7．（5分）已知向量＝（﹣2，2），＝（5，k）．若|+|不超过5，则k的取值范围是（）A．[﹣4，6]B．[﹣6，4]C．[﹣6，2]D．[﹣2，6]【解答】解：∵＝（﹣2，2），＝（5，k），∴+＝（3，2+k），∴|+|＝，∵|+|不超过5，∴≤5，即（k+2）2≤16，解得﹣6≤k≤2，∴k的取值范围是[﹣6，2]．故选：C．8．（5分）若平面向量与向量＝（﹣1，2）的夹角是180°，且||＝3，则＝（）A．（﹣3，6）B．（3，﹣6）C．（6，﹣3）D．（﹣6，3）【解答】解：设＝λ＝（﹣λ，2λ）（λ＜0），∵，∴（﹣λ）2+（2λ）2＝45∴λ2＝9∵λ＜0，∴λ＝﹣3∴＝（3，﹣6）故选：B．9．（5分）设D，E，F分别为△ABC的三边BC，CA，AB的中点，则+＝（）A．B．C．D．【解答】解：∵D，E，F分别为△ABC的三边BC，CA，AB的中点，∴+＝（+）+（+）＝+＝（+）＝，故选：A．10．（5分）设、、是非零向量，下列命题正确的是（）A．（•）•＝•（•）B．|﹣|2＝||2﹣2||||+||2C．若||＝||＝|+|，则与的夹角为60°D．若||＝||＝|﹣|，则与的夹角为60°【解答】解：对于A，（•）•为与共线的向量，•（•）为与共线的向量，故A不正确；对于B ，|﹣|2＝（﹣）2＝2﹣2•+2＝||2﹣2||•||cos ＜，＞+||2，故B 不正确；对于C ，若||＝||＝|+|，即有||2＝||2＝|+|2＝2+2•+2，•＝﹣2，cos ＜，＞＝﹣，则与的夹角为120°，故C 不正确；对于D ，若||＝||＝|﹣|，即有||2＝||2＝|﹣|2＝2﹣2•+2，•＝2，cos ＜，＞＝，则与的夹角为60°，故D 正确． 故选：D ．11．（5分）图是函数y ＝A sin （ωx +φ）（x ∈R ）在区间上的图象，为了得到这个函数的图象，只要将y ＝sin x （x ∈R ）的图象上所有的点（ ）A ．向左平移个单位长度，再把所得各点的横坐标缩短到原来的倍，纵坐标不变B ．向左平移个单位长度，再把所得各点的横坐标伸长到原来的2倍，纵坐标不变C ．向左平移个单位长度，再把所得各点的横坐标缩短到原来的倍，纵坐标不变 D ．向左平移个单位长度，再把所得各点的横坐标伸长到原来的2倍，纵坐标不变【解答】解：由图象可知函数的周期为π，振幅为1，所以函数的表达式可以是y＝sin（2x+φ）．代入（﹣，0）可得φ的一个值为，故图象中函数的一个表达式是y＝sin（2x+），即y＝sin2（x+），所以只需将y＝sin x（x∈R）的图象上所有的点向左平移个单位长度，再把所得各点的横坐标缩短到原来的倍，纵坐标不变．故选：A．12．（5分）已知f（tan x）＝sin2x，则f（﹣1）的值是（）A．1B．﹣1C．D．0【解答】解：∵f（tan x）＝sin2x，∴f（﹣1）＝f（tan135°）＝sin270°＝﹣1．故选：B．二、填空题（本大题共4个小题，每空4分，共16分，把正确答案填在题中横线上）13．（4分）的值为﹣．【解答】解：＝tan300°＝﹣tan60°＝﹣．故答案为：﹣．14．（4分）已知命题p：∃x∈R，ax2+2x+1≤0．若命题p是假命题，则实数a的取值范围是（1，+∞）．【解答】解：∃x∈R，ax2+2x+1≤0．若命题p是假命题，即“ax2+2x+1＞0恒成立”是真命题①．当a＝0 时，①不成立，当a≠0 时，要使①成立，必须即，解得1＜a，故实数a的取值范围为：（1，+∞）．故答案为：（1，+∞）．15．（4分）设α∈（0，），若sinα＝，则cos（α+）＝．【解答】解：由α∈（0，），若sinα＝，得到cosα＝＝，则cos（）＝（cosα﹣sinα）＝﹣＝．故答案为：16．（4分）给出下列命题：①存在实数α，使sinαcosα＝1，②函数y＝sin（+x）是偶函数；③直线x＝是函数y＝sin（2x+）的一条对称轴；④若α、β是第一象限的角，且α＞β，则sinα＞sinβ．其中正确命题的序号是②③．【解答】解：①sinαcosα＝sin2α∈[﹣，]，1∉[﹣，]，故不存在实数α，使sinαcosα＝1，故①错误；②函数y＝sin（+x）＝﹣cos x，满足f（﹣x）＝f（x），是偶函数，故②正确；③由2x+＝+kπ，k∈Z得：x＝﹣+kπ，k∈Z，当k＝1时，直线x＝是函数y＝sin（2x+）的一条对称轴，故③正确；④α＝390°、β＝45°是第一象限的角，且α＞β，但sinα＝＜sinβ＝，故④错误．故正确的命题的序号是：②③，故答案为：②③三、解答题（本大题共6个大题，共74分，解答应写出文字说明，证明过程或演算步骤）17．（12分）已知cos（π+α）＝，α为第三象限角．（1）求sinα，tanα的值；（2）求sin（α+），tan2α的值．【解答】解：（1）由条件得cosα＝﹣，α为第三象限角，∴sinα＝﹣＝﹣＝﹣；…（2分）∴tanα＝＝＝；…（4分）（2）由（1）得sin（α+）＝sinαcos+cosαsin＝（﹣）×+（﹣）×＝﹣，…（6分）tan2α＝＝＝…（8分）18．（12分）条件p：A＝{a|不等式x2+2ax+4＞0在x∈R上恒成立}条件q：B＝{a|1＜}；（1）若k＝1，求A∩∁R B；（2）若￢p是￢q的充分不必要条件，求实数k的取值范围．【解答】解：由题意可知：A＝{a|﹣2＜a＜2}；由1＜＜2，可得2﹣k＜a＜4﹣k，所以B＝{a|2﹣k＜a＜4﹣k}，（1）当k＝1时，B＝{a|1＜a＜3}，所以∁R B＝{a|a≥3或a≤1}，故A∩∁R B＝{a|﹣2＜a＜2}∩{a|a≥3或a≤1}＝{a|﹣2＜a≤1}，所以A∩∁R B＝{a|﹣2＜a≤1}，（2）￢p是￢q的充分不必要条件，则p是q的充分不必要条件，则，解得2≤k≤4．19．（12分）已知向量＝（sin x，1），＝（A cos x，cos2x）（A＞0），函数f（x）＝•的最大值为6．（Ⅰ）求A；（Ⅱ）将函数y＝f（x）的图象像左平移个单位，再将所得图象各点的横坐标缩短为原来的倍，纵坐标不变，得到函数y＝g（x）的图象．求g（x）在[0，]上的值域．【解答】解：（Ⅰ）函数f（x）＝•＝A sin x cos x+cos2x＝A sin2x+cos2x＝A（sin2x+cos2x）＝A sin（2x+）．因为A＞0，由题意可知A＝6．（Ⅱ）由（Ⅰ）f（x）＝6sin（2x+）．将函数y＝f（x）的图象向左平移个单位后得到，y＝6sin[2（x+）+]＝6sin（2x+）的图象．再将所得图象各点的横坐标缩短为原来的倍，纵坐标不变，得到函数y＝6sin（4x+）的图象．因此g（x）＝6sin（4x+）．因为x∈[0，]，所以4x+∈[，]，4x+＝时取得最大值6，4x+＝时函数取得最小值﹣3．故g（x）在[0，]上的值域为[﹣3，6]．20．（12分）已知函数f（x）是定义在R上的奇函数，且它的图象关于直线x＝1对称．（1）证明：f（x）是周期为4的周期函数；（2）若f（x）＝（0＜x≤1），求x∈[﹣5，﹣4]时，函数f（x）的解析式．【解答】（1）证明：由函数f（x）的图象关于直线x＝1对称，有f（x+1）＝f（1﹣x），即有f（﹣x）＝f（x+2）．又函数f（x）是定义在R上的奇函数，有f（﹣x）＝﹣f（x）．故f（x+2）＝﹣f （x）．从而f（x+4）＝﹣f（x+2）＝f（x）．即f（x）是周期为4的周期函数．（2）解：由函数f（x）是定义在R上的奇函数，有f（0）＝0．x∈[﹣1，0）时，﹣x∈（0，1]，．故x∈[﹣1，0]时，．x∈[﹣5，﹣4]时，x+4∈[﹣1，0]，．从而，x∈[﹣5，﹣4]时，函数f（x）的解析式为．21．（12分）已知向量＝（sin B，1﹣cos B）与向量＝（2，0）的夹角为，其中A、B、C是△ABC的内角．（Ⅰ）求角B的大小；（Ⅱ）求sin A+sin C的取值范围．【解答】解：（Ⅰ）∵，（1分）又，（2分）∴2化简得：2cos2B﹣cos B﹣1＝0，∴cos B＝1（舍去）或，（4分）又∵B∈（0，π），∴；（5分）（Ⅱ）（8分）∵，∴，则，∴（10分）22．（14分）已知f（x）＝sin（π+ωx）sin（﹣ωx）﹣cos2ωx（ω＞0）的最小正周期为T＝π．（1）求f（）的值；（2）在△ABC中，角A、B、C所对应的边分别为a、b、c，若有（2a﹣c）cos B ＝b cos C，则求角B的大小以及f（A）的取值范围．【解答】解：（1）∵f（x）＝sin（π+ωx）sin（﹣ωx）﹣cos2ωx，＝sinωx cosωx﹣cos2ωx，＝sin2ωx﹣cos2ωx﹣，＝sin（2ωx﹣）﹣∴函数f（x）的最小正周期为T＝π．即：＝π，得ω＝1，∴f（x）＝sin（2x﹣）﹣，∴f（）＝sin（2×﹣）＝sin﹣＝﹣1，（2）∵（2a﹣c）cos B＝b cos C，∴由正弦定理可得：（2sin A﹣sin C）cos B＝sin B cos C，∴2sin A cos B＝sin B cos C+cos B sin C＝sin（B+C）＝sin A，∵sin A＞0，∴cos B＝，∵B∈（0，π），∴B＝，∵A+C＝π﹣B＝，∴A∈（0，），∴2A﹣∈（﹣，），∴sin（2A﹣）∈（﹣，1]，∴f（A）＝sin（2A﹣）∈（﹣1，]，。
四川省达州市大竹县文星中学2014-2015学年高二下学期开学调研考试政治试卷 Word版含答案.pdf
C.中华文化具有民族特色D.中华文化独领风骚 12．“滴水之恩，涌泉相报”，感恩是中华民族的传统美德。中华民族的传统美德对我国当前社会主义道德建设有 着积极的影响。这说明 B.社会主义道德观念同传统美德是完全一致的 C.社会主义道德建设的核心是弘扬中华民族的传统美德 D.中华民族的传统美德是我们进行思想道德建设追求的目标 第II卷（非选择题） 二、综合题：共4题 每题26分 共104分 13．党的十八大报告指出：文化是民族的血脉，是人民的精神家园。全面建成小康社会，实现中华民族伟大复兴 ，必须推动社会主义文化大发展大繁荣，兴起社会主义文化建设新高潮，提高国家文化软实力，发挥文化引领风尚、教 育人民、服务社会、推动发展的作用。 14．2014年8月,央视科教频道推出一档新节目《中国汉字听写大会》。节目参赛选手主要来自全国各国家级重点中 学的初中学生,为了准备比赛,学校要求选手们熟读《辞典》、《字典》、《词库》等大部头图书。比赛不仅考查了选手 的汉字手写能力,更考查了选手对中国汉字的理解能力、对中国文化的领悟能力。同时它也吸引观众在电视机前同步参 与,让观众在游戏中学习知识、领略汉字之美。观看的过程,实际就是全民进行自我教育的过程,这种教育是润物细无声 、点润在心。这档节目开播以来唤起了民众对汉字的空前关注,因此,节目的意义远远不止于听写本身,更在于是一种弘 扬民族精神的活动。 15．材料一 201年埃及卢克索神庙的浮雕上有人用中文刻上“丁××到此一游”,此事件遭到不少人热议谴责。近 年来,“到此一游”始终如一个不散的幽灵,在我们身边徘徊。 阅读材料,回答问题: (1)材料反映了什么文化现象?分析这种文化现象产生的原因。 (2)从思想道德建设的角度,请你针对上述现象向政府有关部门提出建议。 16．一段时间以来,最美司机、最美妈妈、最美老师等一系列“最美”人物蹿红网络,成为舆论和社会关注的焦点。 与传统模范人物相比,他们毫无“官方”背景,是网络推出的草根英雄。在网络发达的今天,凡是善举,无需权威部门认定 ,无需层层评选,只要网友认可,就可以成为“最美”。 (1)广大网民崇尚和追求草根英雄身上的真善美有何意义? (2)怎样才能把网络打造成“凝聚民族精神正能量的聚集地”? 参考答案 4.A 【解析】文化需要通过一定的物质载体表现出来,不同的建筑风格展现出世界各国独具魅力和特色的建筑文化,体现 出世界文化的多样性。选A。 5.B 【解析】汉字是中国的文字,不能说其是人类文明世代相传的重要标志,故②不选,①符合题意;文化遗产是一个国家 和民族历史文化成就的重要标志,④排除;③符合题意,故选B。 6.C 【解析】本题考查我国人民群众文化生活日益丰富多彩的原因。现代科学技术的发展,给大众文化传媒插上了飞翔 的翅膀;市场经济的发展,使文化市场呈现多元化,②③符合题意。①说法错误,文化有先进和落后之分;④不符合题意。 7．A 【解析】部分课外读物出现的种种问题,表明文化市场需要政府的监督,A当选。提高文化产品质量的责任主要在于 文化创作者,B观点错误;题干反映的现象不是通俗化,而是庸俗、低俗,C不选;题干没有涉及代沟问题,D不选。 8．D 【解析】针对不良课外读物,青少年要提高辨别不同性质文化的眼力,不断提升自身的文化修养和审美品位,①④应 选;②观点错误,个性、前卫的价值取向不一定是正确的价值取向;③属于政府所为,不符合题意。 9.D 【解析】漫画中的现象是饮食文化中的糟粕,属于落后文化,对于落后文化我们要加以剔除,同时我们要反对浪费 ,①③④符合题意,选D。对于腐朽文化我们必须坚决抵制,依法取缔,②错误。 10.B 【解析】“千古未绝”“和天地共存,与日月同光”体现了中华文化的源远流长,选B。 11.B 【解析】不同地区的剪纸具有不同的特色,体现了文化的区域性,B当选;A、C、D不符合题意。
四川省达州市大竹县文星中学20142015学年高一英语下学期开学调研考试试题
四川省达州市大竹县文星中学2014-2015学年高一英语下学期开学调研考试试题时间：120分钟，满分：150分一、单项选择(共15小题；每小题1分，满分15分)从题中所给的A、B、C、D四个选项中选出一个最佳答案。
1．As ________ matter of fact, ________number of young couples who plan to have a second kid is increasing rapidly.A．the; a B．a; theC．a; a D．不填；the答案：B 句意：事实上，计划生第二个孩子的年轻夫妇的数量在上升。
as a matter of fact“事实上”，第二空填the ，the number of“……的数量”，后面的谓语是单数，选B。
2． ________ is known to all, good friends ________ happiness and value to life.A．It; add B．As; addC．It; add to D．As; add to答案：B 考查非限制性定语从句和词组。
句意：我们都知道的是，好朋友给人生带来快乐和价值。
as引导非限制定语从句，指代后面的句子，add...to...“把……加到……里面”，add to“增加”，选B。
3． On December 10,2013，many world's top leaders went to Johannesburg ________ Nelson Mandela, who had passed away.A．in honor of B．in favor ofC．in search of D．in reward of答案：A 考查短语辨析。
A.为纪念；B.支持；C.寻找；D.作为回报。
句意：在2013年12月10日，许多世界最高领导人前往约翰斯堡纪念刚刚去世的纳尔逊曼德拉。
高二数学月考试题及答案-大竹县文星中学2014-2015学年高二下期3月月考
四川省大竹县文星中学2014-2015学年高二下学期3月月考数学试卷考试时间：120分钟；满分150分注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上第I卷（选择题）一、选择题：共12题每题5分共60分1．已知，若的必要条件是，则之间的关系是A. B. C. D.【答案】A【解析】本题考查充分必要条件.等价于；因为的必要条件是，即的必要条件是，所以.选A.2．已知命题;命题.则下列判断正确的是A.p是假命题B.q是真命题C.是真命题D.是真命题【答案】C【解析】本题考查命题及其关系. 命题为真命题，；，可得，所以命题为假命题,；排除A、B; 所以是真命题，选C.3．一元二次方程有一个正根和一个负根的充分不必要条件是A. B. C. D.【答案】C【解析】本题考查函数与方程.因为有一个正根和一个负根，等价于=a<0，即；而的充分不必要条件是；所以有一个正根和一个负根的充分不必要条件是.选C.4．若集合,则“”是“”的A.充分非必要条件B.必要非充分条件C.充要条件D.既不充分也不必要条件【答案】B【解析】本题考查集合的基本运算，充分必要条件. “”等价于，即；而“”是“”的必要不充分条件，所以“”是“”的必要非充分条件.选B.5．已知动点P与平面上两定点A(-,0),B(,0)连线的斜率的积为定值.则动点P的轨迹方程CA. B. C. D.【答案】B【解析】设动点P的坐标是(x,y),由题意得,k PA·k PB=.∴,化简整理得+y2=1.故P点的轨迹方程C是+y2=1(x≠±).6．“”是“直线与直线垂直”的A.充分而不必要条件B.必要而不充分条件C.充要条件D.既不充分也不必要条件【答案】A【解析】本题考查充分必要条件，直线垂直. “直线与直线垂直”等价于“”；而“”是“”的充分而不必要条件.所以“”是“直线与直线垂直”的充分而不必要条件.选A.7．“直线l的方程x-y-5=0”是“直线l平分圆(x-2)2+(y+3)2=1的周长”的A.充分而不必要条件B.必要而不充分条件C.充要条件D.既不充分又不必要条件【答案】A【解析】圆(x-2)2+(y+3)2=1的圆心坐标为(2,-3),直线l经过圆(x-2)2+(y+3)2=1的圆心,所以直线l平分圆(x-2)2+(y+3)2=1的周长.因为过圆心的直线都平分圆的周长,所以这样的直线有无数多条.由此可知“直线l的方程x-y-5=0”是“直线l平分圆(x-2)2+(y+3)2=1的周长”的充分而不必要条件.8．已知椭圆中心在原点,焦点在y轴上,长轴长为6,离心率为.则椭圆方程A. B. C. D.【答案】A【解析】由已知得,a=3,e=,∴c=2,b=,∴所求椭圆方程为9．已知点A,B分别是椭圆长轴的左、右顶点,点F是椭圆的右焦点,点P在椭圆上,且位于x轴上方,PA⊥PF.设M是椭圆长轴AB上的一点,M到直线AP的距离等于|MB|,椭圆上的点到点M的距离d的最小值A. B. C.-1 D.1【答案】B【解析】直线AP 的方程是x-y+6=0.设点M 的坐标是(m,0), 则M 到直线AP 的距离是,又B(6,0),于是=|m-6|,又-6≤m ≤6,解得m=2,椭圆上的点(x,y)到点M 的距离为d,有d 2=(x-2)2+y 2=x 2-4x+4+20-x 2= (x-)2+15,由于-6≤x ≤6,∴当x=时,d 取最小值.本题考查椭圆与向量、椭圆与直线以及求最值等有关问题,综合性较强.解决此类问题的突破口是利用方程的思想、函数的思想等进行综合考量.有关方程的解的问题,函数的图象、性质、最值问题,在此类题目中进行交汇对接,在难度和技巧上都有较高要求.10．已知椭圆的左、 右焦点分别为F 1,F 2,过F 1且倾斜角为45°的直线l 与椭圆相交于A,B 两点.则AB 的中点坐标 A. (-53,52). B.(1,-1) C.(-1,52) D.(-1,1)【答案】A 【解析】由,知a=,b=,c=1.∴F 1(-1,0),F 2(1,0),∴l 的方程为y=x+1, 联立消去y 得5x 2+6x-3=0.设A(x 1,y 1),B(x 2,y 2),AB 中点M(x 0,y 0),则 x 1+x 2=,x 1x 2=,x 0=,y 0=(或y 0=x 0+1=-+1=),∴中点坐标为M(-53,52).11．设F 1,F 2分别为椭圆C:(a>b>0)的左、右焦点,过F 2的直线l 与椭圆C 相交于A,B 两点,直线l 的倾斜角为60°,F 1到直线l 的距离为2.则椭圆C 的焦距A.1B.2C.3D.4【答案】D【解析】设焦距为2c,由已知可得,F 1到直线l 的距离为c=2,故c=2.所以椭圆C 的焦距为4.12．如图,已知椭圆(a>b>0)的离心率e=,过点A(0,-b)和B(a,0)的直线与原点的距离为.已知定点E(-1,0),若直线y=kx+2(k≠0)与椭圆交于C,D 两点.存在k 的值,使以CD 为直径的圆过E 点,则k=A.67B.-67 C.3 D.6【答案】A【解析】假设存在这样的k 值,由,得(1+3k 2)x 2+12kx+9=0.∴Δ=(12k)2-36(1+3k 2)>0. ①设C(x 1,y 1),D(x 2,y 2),则 ②而y 1·y 2=(kx 1+2)(kx 2+2)=k 2x 1x 2+2k(x 1+x 2)+4.要使以CD 为直径的圆过点E(-1,0),当且仅当CE ⊥DE,则=-1,即y 1y 2+(x 1+1)(x 2+1)=0,∴(k 2+1)x 1x 2+(2k+1)(x 1+x 2)+5=0. ③将②代入③,解得k=67.经验证,k=67使①成立. 综上可知,存在k=67,使得以CD 为直径的圆过点E. 本题考查椭圆的轨迹方程及直线与椭圆的位置关系.当直线与椭圆相交时,其解题的一般步骤是:(1)联立直线和椭圆的方程;(2)化为一元二次方程;(3)判别式大于零;(4)根与系数的关系;(5)将根与系数的关系应用于题设条件,建立方程或不等式,解决相关问题.第II卷（非选择题）二、填空题：共4题每题4分共16分13．设p:≤x≤1,q:x2-(2a+1)x+a(a+1)≤0,若¬p是¬q的必要而不充分条件,则实数a的取值范围是.【答案】【解析】由x2-(2a+1)x+a(a+1)≤0,得(x-a)(x-a-1)≤0,则a≤x≤a+1,若¬p是¬q的必要而不充分条件,则q是p的必要而不充分条件,有,得0≤14．命题“存在，使”的否定是【答案】对任意，使【解析】本题考查全称命题与特称命题.全称命题的否定是特称命题，所以命题“存在，使”的否定是对任意，使.15．在平面直角坐标系xOy中，A1，A2，B1，B2为椭圆＋＝1(a>b>0)的四个顶点，F为其右焦点，直线A1B2与直线B1F相交于点T，线段OT与椭圆的交点M恰为线段OT的中点，则该椭圆的离心率为________.【答案】2－5【解析】直线A 1B2的方程为＋＝1，直线B1F的方程为＋＝1，二者联立，得T，则M ()在椭圆＋＝1(a>b>0)上，∴＋＝1，c2＋10ac－3a2＝0，e2＋10e－3＝0，解得e＝2－5.16．给出以下四个命题:①命题“∀x∈R,x2+x+1>0”的否定是“∃x0∈R,+x0+1≤0”;②“若am2<bm2,则a<b”的逆命题为真;③设{a n}是首项大于零的等比数列,则“a1<a2”是“数列{a n}是递增数列”的充要条件;④若命题p:向量a=(1,-2)与向量b=(1,m)的夹角为锐角为真命题,则实数m的取值范围是(-∞,). 其中正确命题的序号是(写出所有满足题意的序号).【答案】①③【解析】①命题“∀x∈R,x2+x+1>0”的否定是“∃x 0∈R,+x0+1≤0”,所以①正确.②若“am2<bm2,则a<b”的逆命题为“若a<b,则am2<bm2”,当m=0时,am2=bm2,所以②错误.③设数列{a n}的公比为q,因为a1<a2,且a1>0,所以有a1<a1q,解得q>1,所以数列{a n}是递增数列;反之,若数列{a n}是递增数列,则公比q>1且a1>0,所以a1<a1q,即a1<a2,所以“a1<a2”是“数列{a n}是递增数列”的充要条件,所以③正确.④若a∥b,即-2-m=0,所以m=-2,此时有a=b,向量夹角为0.要使a,b的夹角为锐角,则有a·b>0且m≠-2,即1-2m>0,得m<,所以m<且m≠-2,所以④错误.故正确的命题的序号为①③.三、解答题：共6题, 17～21每题12分,22题14分，共74分17．已知命题p：x1和x2是方程x2－mx－2＝0的两个实根，不等式a2－5a－3≥|x1－x2|对任意实数m∈恒成立；命题q：不等式ax2＋2x－1>0有解.若p∧q是假命题，￢p也是假命题.求实数a的取值范围.【答案】解：∵p∧q是假命题，￢p是假命题，∴命题p是真命题，命题q是假命题.∵x1，x2是方程x2－mx－2＝0的两个实根，∴∴|x 1－x2|＝＝，∴当m∈时，|x1－x2|max＝3.由不等式a2－5a－3≥|x1－x2|对任意实数m∈恒成立，可得a2－5a－3≥3.∴a≥6或a≤－1，∴当命题p为真命题时，a≥6或a≤－1.命题q：不等式ax2＋2x－1>0有解，①当a>0时，显然有解；②当a＝0时，2x－1>0有解；③当a<0时，∵ax2＋2x－1>0，∴Δ＝4＋4a>0，∴－1<a<0.从而命题q：不等式ax2＋2x－1>0有解时，a>－1.又命题q是假命题，∴a≤－1.综上所述：⇒a≤－1.所以所求a的取值范围为(－∞，－1].【解析】本题主要考查不等式恒成立问题，逻辑联结词和韦达定理。
四川省大竹县文星中学高一英语12月月考试卷(含解析)
四川省大竹县文星中学2015-2016学年高一12月月考英语试题注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上第I卷（选择题）一、单项选择：1．I don't like such novels________you read.A.whichB.thatC.asD.when【答案】C【解析】句意：我不喜欢你读的这种小说。
as引导定语从句时通常构成such …As或the same …As两种搭配,其中such和same修饰其后的名词,as为关系代词,指代其前的名词,引导定语从句。
2．—Look out! The water is boiling. Don’t get yourself burned.—A. What for?B. Why not?C. Got it.D. Never mind.【答案】C【解析】考查交际用语。
根据语境中的"小心!水正在沸腾,不要烫着自己。
"可知,对方的回答应该是"明白了"之意,故用Got it表示此意。
What for?"为什么?";Why not?"为什么不呢?";Never mind"不要紧"。
3．I________him to give up playing computer games, but he didn't listen.A.advisedB.persuadedC.suggestedD.practiced【答案】A【解析】句意:我劝他放弃玩电脑游戏，但他不听。
advise sb.to do 建议某人做，劝某人做；persuade sb. to do说服某人做；suggest sth. (to sb.)(向某人）建议某事；practice doing sth.练习做某事。
4．In the market, dealers were ________ with growers ________the price of coffee.A.quarrelling; aboutB.bargaining; overC.quarrelling; overD.bargaining; on【答案】B【解析】句意：在市场上,商人们正与种植者就咖啡豆的价格进行商谈。
四川省达州市大竹县文星中学2014-2015学年高一6月月考英语试卷
四川省大竹县文星中学2015年春高一下期6月月考英语试卷考试时间：120分钟；满分：150分第I卷（选择题）一、单项选择：共15题每题1分共15分1．---Why do you eat all the vegetables but leave ____ meat untouched?---- I’m on ____ diet.A.a; theB.the; /C./;aD.the; a2．The boy ____ on the ground ____ to me that he ____ the book on the table.A.who lay; lie; laidB.lying; lied; had laidC.lying; lay; had laidD.lying; laid; lay3．Would you please keep silent? The weather report ________ and I want to listen.A.is broadcastedB.is being broadcastedC.has been broadcastedD.had been broadcast 4．----Would you permit me ____ here?---- Sorry, we don’t permit ____ in the library according to the rules.A.smoking; smokingB.to smoke; to smokeC.smoking; to smokeD.to smoke; smoking 5．____ is known to us all is that the old worker, for _____ life was hard in the past, still works hard in his seventies.A.As; whomB.What; whoseC.It; whoseD.What; whom6．The other day, my father drove his car down at ____ I thought was a dangerous speed.A.asB.thatC.whichD.what7．—Can you believe I had to pay 30 dollars for a haircut?—You should try the barber’s I often go next time. It’s only 15.A.asB.whichC.thatD.where8．You can hardly imagine the difficulty the woman had ________ her children.A.brought upB.to bring upC.bringing upD.to have brought 9．Lack of money ________ her not continuing her studies.A.explains toB.cares forC.accounts forD.approves of 10．Some of the tricks people tend to _______ on each other on April 1st should be forbidden.A.makeB.actC.takeD.play11．You can’t imagine that a well-behaved man _______be so rude to a lady.A.mightB.needC.wouldD.should12．Who would you like to have _____to Beijing for business this time?A.goB.goneC.to goD.going13．The newly-discovered evidence led to the criminal _______ to five years in prison..A.to be sentencedB.being sentencedC.sentencedD.be sentenced 14．Because he was _____ the new limit, he was stopped by traffic police and was fined 200 yuan.A.good atB.tired fromC.unaware ofD.uninterested in 15．With a lot of homework _________last weekend, Tom didn’t go to the movies with his friends.A.finishedB.to finishC.finishingD.being finished二、完形填空：共20题每题2分共40分One day I was hanging about with several friends. Not really doing anything 16, just doing what teenagers do on a hot summer afternoon.We were walking through a parking lot 17my younger brother, Mark, came running up to us at full 18. A few seconds later I saw a man running behind him. Mark was outof 19, so I didn't really understand what he was 20. The man in front of mewas 21for Mark. Mark moved behind me, and I realised that he was 22. I asked the man what the 23. was. The man said he wanted my little brother in a bad way. He reached for my brother again and again but I 24him. He then punched (拳击) me in the chest. I felt more 25than hurt and I had to defend myself.26did the man know that I had been training in Karate (空手道) for four years. Iwas 27by my parents to respect all adults, 28this man was so terrible. He was trying to hurt my 29; he turned his anger to me with a 30attack. But, much to his surprise, he found he was in a bit of trouble himself. So the man 31his attack and disappeared from my sight.The whole thing was over a simple disagreement 32two children, namely Mark and the man's daughter. This man had 33overreacted (反应) and did things without finding out the facts. I am happy that no one was hurt badly and that 34worked out okay.However, the man and I were similar in a way. We both tried to 35the ones we care about in the best way we could.16．A.helpful B.necessary C.special eful17．A.when B.as C.since D.why18．A.limit B.power C.speed D.hope19．A.control B.breath C.mind D.danger20．A.thinking B.saying C.making D.ordering21．A.reaching B.waiting C.caring D.leaving22．A.surprised B.excited C.brave D.scared23．A.difficulty B.act C.problem D.task24．A.blocked B.defeated C.disliked D.disagreed25．A.tired B.shocked C.moved D.bored26．A.Little B.Much C.Many D.Few27．A.reminded B.showed C.taught D.encouraged28．A.and B.so C.as D.but29．A.teacher B.father C.brother D.friend30．A.mental B.material C.chemical D.physical31．A.continued B.kept C.stopped D.increased32．A.between B.across C.among D.for33．A.naturally B.wildly C.slightly D.slowly34．A.nothing B.anything C.something D.everything35．A.protect B.admire C.value D.praise三、阅读理解：共20题每题2分共40分The influence of America is increasing in my country. Spanish people drink Coca Cola, wear blue jeans, watch Hollywood movies, listen to American music, and eat fast food, and they do these things every day.I think that American movies are a good way to spread American culture because people are often influenced by what they see in the movies. Most of the programs and documentaries (纪录片) we watch on TV are from America, and most of the movies we go to see are made in Hollywood. In the last few years, the government has tried to protect the Spanish movies. Now, in our cinemas, at least twenty percent of the movies which are shown must be from Spain or from other countries in Europe.American culture is a part of Spanish life now. It’s certain that many things from America are as much a part of people’s lives as Spanish things. For example, Coca Cola is as familiar to everybody as any typical Spanish product. I’ve known about Coca Cola for my whole life. However, it’s different with Western fast food. For example, I don’t think McDonald’s is as successful in Spain as it is in other countries. In my opinion, one of the reasons may be the lifestyle of the Spanish people. The Spanish people normally eat at home. On the other hand, maybe McDonald’s hamburgers will eventually replace the famous Spanish tapas. It’s true that inevery city in Spain you can find a McDonald’s, and it is more popular among the Spanish children than among the adults. In any case, it’s obvious that American culture is becoming more and more a part of our lives every day.36．From the first paragraph we can know that ____.A.the influence of America on Spain can be found everywhereB.most Spanish people don’t like to listen to their own musicC.fast food spreads from Spain to the United StatesD.some Spanish actors go to America to improve their acting skills37．What plays an important part in the spreading of American culture in Spain?A.American novels.B.Hollywood movies.C.McDonald’s.D.American music. 38．Why did the government set some rules for the films shown in Spain?A.To protect foreign culture in Spain.B.To earn more money from Spanish films.C.To limit the number of foreign movies.D.To unite the European Community.39．What do you think Spanish tapas might be?A.The name of a drink.B.The name of a restaurant.C.A clothing brand.D.A certain kind of food.A man may usually be known by the books he reads as well as by the company he keeps; for there is a companionship of books as well as of men; and one should always live in the best company, whether it be of books or of men.A good book may be among the best of friends. It is the same today that it always was, and it will never change. It is the most patient and cheerful of companions. It does not turn its back upon us in times of adversity or distress. It always receives us with the same kindness; amusing and instructing us in youth, and comforting and consoling us in age.Men often discover their affinity(亲密) to each other by the mutual love they have for a book just as two persons sometimes discover a friend by the admiration which both entertain for a third. There is an old proverb, ‘Love me, love my dog.” But there is more wisdom in this:” Love me, love my book.” The book is a truer and higher bond of union. Men can think, feel, and sympathize with each other through their favorite author. They live in him together, and he in them.A good book is often the best urn(瓮)of a life enshrining the best that life could think out; for the world of a man’s life is, for the most part, the world of his thoughts. Thus the best books are treasuries of good words, the golden thoughts, which, remembered and cherished, become our constant companions and comforters.Books possess an essence of immortality. They are by far the most lasting products of human effort. Temples and statues decay, but books survive. Time is of no account with great thoughts, which are as fresh today as when they first passed through their author’s minds, ages ago. What was then said and thought still speaks to us as vividly as ever from the printed page. The only effect of time have been to sift(筛) out the bad products; for nothing in literature can long survive but what is really good.Books introduce us into the best society; they bring us into the presence of the greatest minds that have ever lived. We hear what they said and did; we see them as if they were really alive; we sympathize with them, enjoy with them, grieve with them; their experience becomes ours, and we feel as if we were, in a measure, actors with them in the scenes which they describe.The great and good do not die, even in this world. Embalmed(加以防腐处理) in books, their spirits walk abroad. The book is a living voice. It is an intellect to which one still listens. 40．What’s the meaning of the underlined word “immortality”?A.difficult to findst for a long timeC.very importantD.hard to destroy 41．How do we get close to the greatest minds through reading?A.by talking to them about what we thoughtB.by experiencing what they have gone through in lifeC.by sharing their feeling and reading their mindsD.by acting with them on the stage42．What is the best title of this text?panionship of booksB.Life without booksC.Unforgettable booksD.Sorting out books43．This passage is mainly developed by __________.A.analyzing causesB.making comparisonsC.examining differencesD.following the order of importanceSon’s HelpMr. Lang worked in a factory. As a driver, he was busy but he was paid much. His wife was an able woman and did all the housework. When he came back, she took good care of him and he never did anything at home. So he had enough time when he had a holiday. A few friends of his liked gambling(赌博) and he learned it soon. So he was interested in it and hardly forgot anything except gambling. He lost all his money and later he began to sell the television, watches and so on. His wife t old him not to do it but he didn’t listen to her. She had to tell the police. He and hisfriends were punished for it. And he was hardly sent away. After he came out of lockup(拘留所), he hated her very much and the woman had to leave him. It was New Year’s Day. Mr. Lang didn’t go to work. He felt lonely and wanted to gamble again. He called his friends and they came soon. But they were afraid the police would come. He told his five-year-old son to go to find out if there were the policemen outside. They waite d for a long time and didn’t think the police would come and began to gamble. Suddenly opened the door and in came a few policemen. ―“I saw there weren’t any policemen outside, daddy,” said the boy, ―“so I went to the crossing and asked some to come.”44．Mr. Lang was paid much because _______.A.he worked in a factoryB.he had a lot of work to doC.he had worked there for a long timeD.he was a driver45．Mrs. Lang did all housework because _______.A.she wouldn’t stop her husband gamblingB.she couldn’t fi nd any workC.she thought her husband was tiredD.her husband spent all time in gambling 46．The woman had to leave Mr. Lang because _______.A.he wouldn’t stop gamblingB.he had been put into lockupC.he was hardly sent away by the factoryD.he didn’t love her any longer47．Which of the following is right?A.The boy thought his father needed some policemen.B.The boy hoped his father would stop gambling soon.C.The boy hoped his mother would come back.D.The boy hoped his father would be put into lockup again.When it comes to President Obama，most of his personal business is already known by the public. Personal information about his children, Malia and Sasha，however，has been kept a little more under wraps.The New York Times recently released a list of rules that Michelle Obama has mentioned over the years that Malia and Sasha must follow during their time in the White House，as well as in general. See how the first family educates their children：The girls must write reports about what they've seen on their trips，even if it's not required by their school.Malia may use her cell phone only on the weekend，and she and her sister cannot watch television or use a computer for anything but homework during the week.Malia and Sasha have to play two sports：one they choose and one selected by their mother.Malia must learn to do laundry(洗衣服)before she leaves for college.The girls have to eat their vegetables，and if they say they are not hungry，they cannot ask for cookies or chips later.While these might be shocking to some，Michelle said，“They're not little princesses. It's just basic rules，boundaries, and expectations that we would have normally.”Michelle also mentions another set of rules：The girls must do their chores(家务)，though the White House has a large staff. Malia and Sasha have chores of their own.They must play a team sport, because it's about learning how to play on a team，how to lose and how to win gracefully....It sounds like Michelle and Barack want the best for their kids and to make them as well rounded as possible. What are your thoughts on the Obama family rules?48．What's the passage mainly about?A.The first family rules.B.The first family daily life.C.How to be good parents.D.How to be good children.49．What do the underlined words “under wraps” in Para 1 probably mean?A.Attractive.B.Secret.C.CalmD.Public.50．What has to be followed after the girls' every trip?A.Emails.B.Reports.C.Homework.D.Photos.51．Which of the following is the exception for the girls?A.To learn to do laundry.B.To play two sports.C.To use cell phone freely.D.To eat their vegetables.In America, Virginia Beach has all the elements of a classic seaside resort(度假胜地): brilliant beaches, a lively boardwalk, plenty of restaurants and nightspots, and amusement rides sure to appeal to kids. Many believe Virginia Beach is at its best in the off-season, when the town is less crowded but the weather is still mild.Meanwhile, some safety tips should be followed, to enjoy the happiness and excitement the beach offers.The number one safety tip concerns ocean safety: pay attention to Flag conditions posted on the lifeguard stands. Lifeguard post a red flag to warn when the ocean water is dangerous. Take them seriously! Tourists from land-locked regions are particularly easily attracted by the magic of the waves. However, a calm ocean can become risky without warning. Make sure you swim near alifeguard. Swimming without lifeguard protection is almost five times as great as drowning at a beach with lifeguards.Never swim alone. Many drownings involved single swimmers. When you swim with someone else, if one of you has a problem, the other may be able to get help, including signaling for assistance from others.Don’t fight the current. The facts show that some 80% of rescues by l ifeguards at ocean beaches are caused by currents. These currents are formed by surf and gravity, because once surf pushes water up the slope of a beach, gravity pulls it back. This can create concentrated rivers of water moving offshore. If you are caught in a rip (撕裂的)current, don’t fight it by trying to swim directly to shore. Instead, swim parallel to shore until you feel the current relax, then swim to shore. Most rip current are narrow and a short swim parallel to shore will help bring you to safety. 52．When coming to Virginia Beach, children cannot enjoy the happiness of______.A.walking on the road made of woodB.joining the nightspotsC.Riding a horse or a pumper carD.Skiing in the sea53．Many people believe the best time to visit Virginia Beach may be____.A.After autumn school term beginningB.In the summer vacationC.During the Christmas holidayD.In the cold winter54．From the passage we can know ____.A.one in five persons swimming in the sea is drownedB.if one with lifeguard were drowning, five persons without lifeguard would beC.some 80% people drowning by the currents are rescued by lifeguardsD.some 20% drowning by the currents are rescued by lifeguards55．The passage mainly tell us ____.A.Virginia Beach has all the elements of a classic seaside resortB.the happiness and excitement the beach offersC.some safety tips when swimming in the seaD.the dangers for tourists from land-locked regions to swim in the sea四、七选五：共5题每题2分共10分How to Love Your ParentsEven if you think that your parents are mean-spirited at times, loving your parents is a normal and fulfilling part of life. You love them for the fact that they created you, raised you, and are in part a source of who you are. Here are some ways to love your parents.56 A gentle “good morning” and “I love you” will warm a coldest heart. Remember that they brought you into this world. Without your parents, we might still wander at an unknown corner in an unknown world. Respect them more and cherish these moments. You can use these moments to learn from them when you’re off on your own. It’s OK to get angry but angry actions don’t help you or your parents. Act calmly, cool off, journal about your feelings, or talk to a friend. 57 Obey their requests. It will make your attitude better and earn you more respect from them. It may seem like you are going through hell when you don’t get what you want or you have to clean. However, you had better remember they keep a roof over your head when it’s cold, raining, snowing, or too hot. Understand that parents are human beings and make mistakes. 58Since you can forgive your friends, why not forgive your parents?Keep company with them. Do things with your parents like watching TV, or go somewhere with them. 59Listen to their old stories and learn from them. You will find they are your teachers in this way or another.Some people simply may not be able to love their parents. 60Seek help if you are being abused(虐待) in any way. Parents do not have a right to harm you.A. Forgiveness is the key.B. Tell them you love them every morning.C. Parents will in turn express their love to you.D. After this, share your feelings with your parents.E. Anyway, spend as much time with them as you can.F. Please remember parents are as important as friends.G. There can be realistic reasons for this, family violence for example.第II卷（非选择题）五、短文改错：共1 0分61．Dear Mr. Black,I’m very thank to you for inviting me to stay with you in the come summer vacation. I have been dreamed of seeing you again so that I can get help from you in my English learning. And I’m afraid I cannot go to your place in this summer. I’ve promised my grandmother, she lives in the country, to spend this summer with her. She misses me too much that I find difficult to refuse her request. I’m busy preparing for my examinations in present. I planned to visit you in winter if it’s convenient to you.Best wishes.Yours truly,Li Ying六、书面表达：共25分62．一些学校为了让学生有更多的时间学习文化知识，取消了美术课。
【英语】四川省达州市大竹县文星中学2014-2015学年高一下学期开学调研考试
四川省达州市大竹县文星中学2014-2015学年高一下学期开学调研考试时间：120分钟，满分：150分一、单项选择(共15小题；每小题1分，满分15分)从题中所给的A、B、C、D四个选项中选出一个最佳答案。
1．As ________ matter of fact, ________number of young couples who plan to have a second kid is increasing rapidly.A．the; a B．a; theC．a; a D．不填；the2．________ is known to all, good friends ________ happiness and value to life.A．It; add B．As; addC．It; add to D．As; add to3．On December 10,2013，many world's top leaders went to Johannesburg ________ Nelson Mandela, who had passed away.A．in honor of B．in favor ofC．in search of D．in reward of4．Mr. Liu born in a poor family, ________ a lot of suffering when still a child.A．went along with B．went down withC．went through D．went into5．—My God! I'm getting late again. What will my boss say?—You can keep ________ now only if you make an honest explanation.A．silent B．calmC．peaceful D．quiet6．In his new book, the writer ________ his memories of village life.A．set about B．set downC．set up D．set out7．Hurry up! The train ________. You know it ________ at 8：30 am.A．leaves; leaves B．is leaving; leavesC．leaves; is leaving D．is leaving; is leaving9．I've got to go now. Something has just ________ at school and I'm needed there.A．come to B．come inC．come up D．come over10．Excuse me, but can you tell me ________？A．where can I get to the libraryB．where I can get to the libraryC．how can I get to the libraryD．how I can get to the library11．Though he was ________ trouble after he was wounded, he managed to escape ________ caught by the enemy.A．out of ; being B．in ; beingC．on ; to be D．in ; to be12．—How long has your brother been working in this factory?—________he dropped from school in 2010.A．When B．UntilC．Since D．Before13．When ________ to hand in his homework, Philip told his teacher that he had left it home.A．asking B．askedC．having asked D．to be asked14．I'd appreciate ________ if you could let me know in advance whether or not you will come.A．it B．youC．one D．this15．This is the first time we ________ a film in the cinema together as a family.A．see B．had seenC．saw D．have seen二、完形填空(共20小题；每小题2分，满分40分)阅读下面短文，理解大意，从题中所给的A、B、C、D四个选项中选出一个最佳答案。
【英语】四川省达州市大竹县文星中学2014-2015学年高一下学期期中考试
四川省大竹县文星中学2015年春高一下期期中检测英语试卷考试时间：120分钟；满分：150分第I卷（选择题）一、单项选择：共15题每题1分共15分1．The doctors have told him to ______ on smoking and drinking.A.cut awayB.cut acrossC.cut offD.cut down 2．Obviously they didn't see the significance (重要性) of the plan. That's ______ the problem was．A.whereB.whyC.whichD.how3．—These grapes look really beautiful.—They____!See the price, $ 3.99 a pound.Too expensive,aren’t they?A.wouldB.couldC.mightD.should4．—It was a red light, William. You______the car.—Sorry. I didn’t see it.A.must stopB.should stopC.must have stoppedD.should have stopped 5．______ I couldn’t fully understand what he wanted to show in his paintings, I thought his works quite impressive.A.AsB.SinceC.IfD.While6．I don’t think the competition is _______ failure, because it has offered us _______valuable experience for the next competition.A.a; aB./; /C.a; /D./; a7．—I spent two weeks in London last summer.—Then you must have visited the British Museum during your stay, ______ you?A.mustn’tB.haven’tC.didn’tD.hadn’t8．—What time is it?—I have no idea. But just a minute, I _______ it for you.A.checkB.checkedC.will checkD.would check9．________ it is to jump into a river in summer!A.How funB.How funnyC.What great funD.What a great fun 10．______ the teacher’s expectation, only one student in his class passed the exam.A.In spite ofB.Contrary ofC.Aside fromD.Instead of11．--- Would you like to come in for a cup of tea?--- _____, Linda, but Mum is waiting for me at home.A.My pleasureB.ThanksC.All right.D.That’s all right.12．---- Excuse me, may I ask you some questions?---- Sorry, I’m too busy and I haven’t even a minute to __________.A.spendB.shareC.spareD.stop13．Without proper lessons, you could ___ a lot of bad habits when playing the piano.A.keep upB.pick upC.draw upD.catch up14．To be great, you must be smart, confident, and, ________, honest.A.thereforeB.above allC.howeverD.after all15．Many relevant problems ________ when prices of daily goods________sharply, which is beyond the ordinary people's buying capacity.A.rise; ariseB.raise; ariseC.arise; riseD.arise; raise二、完形填空：共20题每题2分共40分When she walked in, his eyes lit up. They had both 16someone they loved. So this day was a 17one. She was 18, lonely and afraid. He knew how she felt. There was an obvious 19 in his heart, too. 20what strengthened their love for each other was heartache.She stood there. He motioned to her to sit next to him. She 21for a moment, but gave in. In fact, she 22did. Then she held his hand. He looked at her and placed his hand on hers. Suddenly he reached 23the pillow, pulled out a large 24and nervously handed it to her.She was a bit in 25. Then he handed her a small box, wrapped 26paper of hearts and flowers. She couldn’t 27what was happening.“Now,” he said, “read the card.”She opened the envelope. It 28as follows:I know that this has been a hard year for 29of us. I know that Valentine’s Day is a 30day for people in love. I want you to know that…I love you. I know that Valentines are supposed to get 31. But I went to the store, only to get the 32piece.She paused and tears formed in each corner. 33she unwrapped the box, finding a chocolate heart that was broken into pieces along with a 34:The lady in the store said all she had left was a 35heart. I told her so did we. I am so sorry that Dad left us, Mom. But I just wanted you to know we still have each other.Happy Valentine’s Day,Love,Yourson, Adam16．A.missed B.forgot C.lost D.Respected17．A.wonderful B.difficult C.happy ual18．A.hurt B.wounded C.injured D.harmed19．A.disappointment B.surpriseC.excitementD.pain20．A.But B.If C.So D.While21．A.searched B.hesitated C.walked D.cried22．A.always B.never C.seldom D.sometimes23．A.beside B.into C.under D.on24．A.box B.envelope C.card D.handkerchief25．A.surprise B.peace C.silence D.shock26．A.on B.in C.by D.with27．A.remember B.consider C.wonder D.believe28．A.read B.looked C.wrote D.seemed29．A.all B.neither C.both D.none30．A.special B.terrible mon D.formal31．A.turkey B.eggs C.chocolate D.trees32．A.first st C.smallest D.best33．A.Hurriedly B.Quickly C.Happily D.Slowly34．A.word B.note C.rose D.notice35．A.sweet B.mended C.cheap D.Broken三、阅读理解：共20题每题2分共40分AMost homeless turn to begging to make ends meet. However, a young South African man has come up with an interesting alternative—he spends his days spreading the joy of reading and selling books written by his favorite authors．He is Philani Dladla , who is known as Pavement Bookworm.While people don't know much about how the 24-year-old became a homeless man and how long he has been selling books on the streets, the world's attention has been focused on the young man recently. Thanks to an interview conducted by South African director, TebogoMalope.In the video named Pavement Bookworm, the cheerful Dladla talks about his passion(热爱) for books and how reading helped keep him away from a life of drugs and live a different life. The well-spoken young man also talks about his favorite authors and clearly appreciates what makes him a fan of each one of them.Not surprisingly, after Malope uploaded the "Pavement Bookworm" video on YouTube. Dladla has become a celebrity(名人). In addition to being interviewed by other journalists, he has also received several job offers and even a visit from Steven Sidley, the author of Entanglement who hand-delivered(人工递送) his latest book to the enthusiastic reader.The best thing is that this newly found fame has led to a business boom. Locals now go out of their way to seek Dladla for book discussions and most importantly to buy his recommendations. What' s heart-warming is that despite being hardly able to make ends meet，Dladla does not accept money from children who are interested in getting a book from him. In order to keep up with theincreased demand，Malope is collecting book donations on behalf of the cheerful young man whose mission(使命) in life is to spread his passion for reading!36．Dladla is different from other homeless people in that_____.A.he is making a living by selling books on the streetB.he is the only person who has changed the worldC.he depends on the money from others to surviveD.he has been interviewed by famous reporters37．What can we learn about Dladla in the video named Pavement Bookworm?A.The young man was used to taking drugs.B.He makes comments on different authors worldwide.C.The young man was good at giving speech after reading.D.Reading has offered him an opportunity to get improved.38．How has the video influenced Dladla according to the passage?A.Many famous authors have decided to give him books free of charge.B.He has always been surrounded by many readers with interest.C.He has become a figure interviewed and visited by others.D.His story has been well described in a famous book.39．Which of the following words can best describe Dladla?A.Ambitious.B.Creative.C.Passionate.D.DeterminedBWhy are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation (积累)in your body.Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity(肥胖). When too many nutrients are absorbed at once, the body grows fat. Improperly digested food movesslowly through the digestive tract(消化道), where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens(过敏原) and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common. To stop this vicious circle in its tracks, people need to consume food and supplements that will neutralize(中和) the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balan ce. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach. 40．It can be inferred from Para.2 that __________.A.foods with natural enzymes help people keep fitB.we’d better be cautious about raw and whole foodsC.it is essential for people to protect their vital organsD.giving up cooked and refined foods is a new lifestyle41．Processed foods are unhealthy because they __________.A.destroy body’s cellsB.may lead to obesityC.are difficult to digestD.stop body’s metabolism42．What is the main purpose of this passage?A.To warn people of the problem of obesity.B.To advocate (提倡) eating more raw and whole foods.C.To inform people of the harm of processed foods.D.To tell the differences between raw and processed foods.43．What is likely to be talked about following the last paragraph?A.Different causes of acid accumulation.B.Correct ways to cook raw foods.C.Suitable types of raw and whole foods.D.Active approaches to avoid acid.CA survey sponsored by an international temporary service agency found that U. S. managers believe that people with a sense of humor do better at their jobs, compared with those who have little or no sense of humor. In fact, about 96 percent of those surveyed said people with a sense of humor do better.The survey went on to point out that the results suggest that a sense of humor may helplight-hearted employees keep their jobs during tough times. And, what's more, it may push them up the corporate ladder past their humorless colleagues.Why? It seems that those with a sense of humor are better communicators and better team players. Studies have shown that happy workers are more productive. In fact, a researcher at California State University found that humor could help the employees to release tension.Research done by psychologist Dr. Ashton Trice at Mary Baldwin College in Virginia showed that humor helps us think. When people feel stuck on important projects, they tend to feel angry or depressed. According to Dr. Trice's research, taking time out to laugh can help us to get rid of negative feelings and allow us to return to a task or move on to another project unaffected by past defeat.If humor is really this important, then why don't we use it more often on the job? Most likely, the main reason is that many people are unaware of the positive effects of humor in the workplace. They tend to think humor and laughter are unproductive or unprofessional, or perhaps both. However, it is important to realize that some humor is not suitable for the workplace, and that it is often used at wrong times.44．Most people think a sense of humor can ________.A.help you to do your work betterB.make you have a rich lifeC.make you pleased with your workD.help you to make more friends45．Many people don't use humor more in the workplace because __________.A.they like keeping silent when workingB.they don't know the positive effects of humorC.they think they should obey the rulesD.they don't like joking or laughing46．A person with a sense of humor is easier __________.A.to feel surprisedB.to get along withC.to be worriedD.to be successful47．What is the main idea of the passage?A.People with a Sense of Humor.B.Humor Is Important in the Workplace.C.Humor and Humorless.D.Everyone Likes Humor.DA new plan for getting children to and from school is being started by a local government in Eastern Eng land. This could end the worries of many parents fearful for their children’s safety on the roads.Until now the local government has only been prepared to provide bus services for children living more than three miles from their school, or sometimes less if special reasons existed. Now it has been decided that if a group of parents ask for help in organizing transport they will be prepared to go ahead, as long as the arrangement will not lose money and children taking part will be attending their nearest school.The new plan is to be fired out this term for children living at Milton who attend Impington School. The children live just within the three-mile limit and the local government said in the past that they would not undertake to provide free transport to the school. But now they have agreed to offer a sum of money for a bus service from Milton to Impington and back, a plan which has the support of the school’s headmaster. Between 50 and 60 parents have said they would like their children to take part. Final calculations have still to be carried out, but a government official has said the cost to parents should be less than ￡20 a term. They have been able to arrange the service at a low cost because there is already an agreement with the bus company for a bus to take children who live further away to Impington. The same bus would now just make one morejourney to pick up the Milton children. The official said they would get in touch with other groups of parents who in the past had asked if transport could be provided for their children, to see if they would like to take part in the new plan.48．What is the aim of the plan?A.To prevent the students’ road accidentsB.To relieve the traffic pressureC.To save time for the parents and studentsD.To help the parents save money49．How can the local government arrange the new bus service at a low cost?A.By letting the bus run in the morning onlyB.By limiting the number of the studentsC.By getting the support from the headmasterD.By linking the new bus service with the existing one50．Which of the following is possible if the plan is carried out?A.The bus company will make much more moneyB.The children can choose whatever school they likeC.The parents can get rid of their worriesD.The students in Limington School can have free bus rides51．This passage is most probably _____A.a personal letterB.an advertisementC.a headmaster’s reportD.a newspaper articleEWe are all called upon to make a speech at some point in life, but most of us don’t do a very good job. This article gives some suggestions on how to give an effective speech.So, you have to give a speech—and you’re terrified. You get nervous, you forget what you want to say, you stumble(结巴) over words, you talk too long, and you bore your audience. Later youthink, “Thank goodness, it’s over. I’m just no good at public speaking. I hope I never have to do that again.”Cheer up! It doesn’t have to be that bad. Here are some simple steps to take the pain out of speech making. Ask yourself the purpose of your speech. What is the occasion? Why are you speaking? Then, gather as many facts as you can on your subject. Spend plenty of time doing your research. Then spend plenty of time organizing your material so that your speech is clear and easy to follow. Use as many examples as possible, and use pictures, charts, and graphs if they will help you make your points more clearly. Never forget your audience. Don’t talk over their heads, and don’t talk down to them. Treat your audience with respect. They will appreciate your thoughtfulness.Just remember: be prepared. Know your subject, your audience, and the occasion. Be brief. Say what you have to say and then stop. And be yourself. Let your personality come through so that you make person-to-person contact with your audience.If you follow these simple steps, you’ll see that you don’t have to be afraid of public speaking. In fact, you may find the experience so enjoyable that you volunteer to make more speeches! You’re not convinced yet? Give it a try and see what happens.52．The main idea of this article is that ________.A.you can improve your speaking abilityB.a poor speaker can never changeC.one should make a short speechD.it is hard to make a speech53．Paragraph 2 implies that ________.A.many people talk too longB.many people are happy to give a speechC.many people do not prepare for a speechD.many people are afraid of giving a speech54．The phrase “talk over their heads” means ________.A.speak too loudlyB.look at the ceilinge difficult wordsD.look down upon them55．The title for this passage may be ________.A.Try to Enjoy a SpeechB.How to Give a Good Speech。
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四川省大竹县文星中学2014-2015学年高二下期5月月考 英语试题 考试时间：150分钟；满分：150分
第I卷（选择题） 一、单项选择：共16题 每题1分 共16分 1．
Mr. Samuel, _______ president of our company, is now in _______ possession of many branches
across China. A.the; the B./; / C.a; the D.a; / 2．
A 19-year-old teenager from Guangdong nicknamed Niko demanded an apology from Youku,
which he believed violated their copyrights as it used his team's photos without _________. A.appreciation B.approval C.assistance D.assessment 3．
—Did Linda see the traffic accident?
—No，no sooner _______ than it happened. A.had she gone B.she had gone C.has she gone D.she has gone 4．
It is reported that China plans to__________ its controversial temporary residence permit and
push forward reform of the household registration system. A.refresh B.subscribe C.abolish D.reserve 5．
Having manners shows good character, consideration and respect for others, taking you where
degrees and money cannot and __________ a better world. A.meeting with B.adapting to C.making for D.fitting into 6．
By the time the reporter arrived at the spot, the injured _______ to hospital.
A.have been taken B.had been taken C.were taken D.would be taken 7．
All work and no play makes Jack a dull boy, which suggests that work and play do not _________
but promote each other. A.conduct B.convey C.contradict D.confirm 8．
Please _______ that stamp, for it is quite rare nowadays. A.turn to B.come up to C.attend to D.hold on to 9．
—_______ you write so well?
—By reading and keeping diaries every day. A.How is it B.What is it C.How is it that D.What is it that 10．
Most smokers say that they _______ smoking to some degree, but health experts suggest that
they had better _______. A.benefit from; cut it out B.benefit; cut it in C.benefit; cut it off D.benefit from; cut it away 11．
______ is troubling me is ______ I don‟t understand ______ he said.
A.What; that; what B.It; that; what C.That; that; what D.what; that; which 12．
—Hi , Tom , why are you looking so tired ?
—I'm tried. Because I ______ the living room all day. A.painted B.have been painting C.have painted D.had painted 13．
--- Where did you get to know him?
--- I think it was in the factory______ I worked ten years ago. A.where B.that C./ D.when 14．
_________, she does get angry with him sometimes.
A.Although much she loves her husband B.Much although she loves her husband C.As she loves her husband D.Much as she loves her husband 15．
--Dad, can we move into our new house now?
--No, it ______. The decoration has not been finished yet. A.was painted B.is painting C.is painted D.is being painted 二、完形填空：共20题 每题2分 共40分 When I was a little boy, I would play outside for hours on sunny summer days and then have a deep and peaceful sleep at night. Sometimes, I‟d have some vivid dreams, making me 16 for a moment. I would stare out into the darkness to see if anything was there and then 17 over and go back to sleep. I can still remember a few times when I woke up, 18 out into the darkness, and actually 19 someone there. It was Mom 20 over me as I slept. Each time she 21 told me to go back to sleep and I closed my eyes again, feeling 22 and loved. I 23 asked Mom why she watched me sleep from time to time, but 24 seeing my own children 25 so fast, I think I know why. She wanted to catch a moment in time and 26 it in her heart forever. I just 27 that she carried a lot of those moments with her into Heaven when she 28 at only 55. Last night I was sleeping lightly 29 I suddenly felt someone near me. I opened my eyes and saw Mom‟s 30 standing in the room, smiling at me. And then she was gone. Now 31 may say that this was just a dream, a wish or part of an old 32 . To me, though, it was 33 that Mom‟s loving spirit was still watching over me. To me, it was evidence enough to know that one day I would be 34 with her and everyone I have ever loved. Trust in their love. Know that your own life can be full of 35 , too. Then joyfully go out and live it with a brave heart and a smiling soul. 16．
A.excited B.afraid C.worried D.awake
17．
A.take B.roll C.look D.climb
18．
A.went B.burst C.looked D.found
19．A.met B.saw C.expected D.dreamed
20．
A.watching B.treating C.helping D.sitting
21．A.angrily B.gladly C.silently D.gently
22．
A.quiet B.nervous C.safe D.anxious
23．
A.never B.often C.sometimes D.seldom
24．
A.before B.after C.since D.for
25．
A.bring up B.raise up C.lift up D.grow up
26．
A.hold B.remove C.find D.cover
27．A.decide B.hope C.wonder D.remember