望城六中2012届高三第三次月考
【VIP专享】广东省广州六中2012届高三上学期第三次月考理综试题(word版含答案)
广州六中2011-2012学年度高三第三次理科综合试题注意事项：1.理科综合共300分，考试用时150分钟2.答卷前请将自己的姓名.考号填涂在答题卡上。
3.答卷时要将答案填涂在答题卡上，答在试卷上无效。
第Ⅰ卷（选择题共25题，共118分）一．单项选择题（本题共16题，每小题4分，共64分;在每个小题给出的四个选项中，只有一项是符合要求的）1.以下有关细胞的叙述，正确的是（）A．细胞质基质不能为细胞代谢提供ATPB．细胞核是细胞代谢的活动中心C．癌变是在致癌因子的作用下细胞的正常基因突变成原癌基因和抑癌基因的过程D．细胞分化、衰老和癌变都会导致细胞的形态、结构和功能发生变化2.对右图细胞分裂的叙述中，正确的是（）A．该细胞有中心体⑨，无细胞壁，可以断定该细胞为动物细胞B．④是由一个着丝点②相连的二条染色体C．细胞中有两对同源染色体，二个四分体D．在后期时，移向同一极的染色体均为非同源染色体3.某科学家用15N标记胸腺嘧啶脱氧核苷酸，32P标记尿嘧啶核糖核苷酸，研究某植物细胞的有丝分裂。
已知这种植物细胞的细胞周期为20h，两种核苷酸被利用的情况如下图所示，图中32P和15N的利用峰值分别表示（）A. 复制、转录B. 转录、复制C. 复制、蛋白质合成D. 转录、蛋白质合成4.右图示生物新物种形成的基本环节，对图示分析正确的是（）A．图中A表示基因突变和基因重组，为进化提供原材料B．种群基因频率的定向改变是生物进化的实质C．图中B表示地理隔离，是新物种形成的必要条件D．图中C表示生殖隔离，指两种生物不能杂交产生后代5.下面关于下丘脑功能的叙述正确的是（）①大量出汗后，下丘脑分泌的抗利尿激素增加②寒冷刺激使下丘脑分泌促甲状腺激素，促进甲状腺的活动来调节体温③下丘脑是体温调节的高级中枢，在下丘脑产生冷觉和热觉④血糖低时，下丘脑通过有关神经的作用，可以促进肾上腺和胰岛A细胞的分泌活动⑤内环境渗透压的增高，使下丘脑某部位产生的神经冲动传至大脑皮层产生渴觉A.①②③B.②③④C.②④⑤D.①④⑤6.为了验证一定浓度的生长素溶液对果实发育的影响，某同学设计了如下实验步骤：①将20朵黄瓜的雌花花蕾套袋，并随机分为甲、乙两组；②甲组开花后在雌蕊的柱头上涂上一定浓度的生长素溶液，再套袋，乙组开花后人工授粉，再套袋；③观察子房的发育情况。
2012届高三英语上册第三次月考测试题(含答案)
2012届高三英语上册第三次月考测试题(含答案)南昌二中2011―2012学年度高三上学期第三次月考英语试题第Ⅰ卷（全卷共计150分。
考试时间为120分钟。
）第一节（共5小题；每小题1．5分，满分7．5分）听下面5段对话。
每段对话后有一个小题，从题中所给的A．B．C三个选项中选出最佳选项，并标在试卷的相应位置，听完每段对话后，你都有10秒钟的时间来回答有关小题的和阅读下一小题。
每段对话仅读一遍。
1．Where was the man last night before 10:00? A．At home． B．In a library． C．In a theatre． 2．How does the man usually go to work? A．By car． B．By bus． C．On foot． 3．How many cars can be parked in front of this building now? A．30． B．60． C．90． 4．Where does the conversation probably take place? A．In the woma n’s home． B．In a factory． C．In a hospital． 5．What are the speakers talking about? A．A lecture． B．Education． C．Generation gap．第二节（共15小题；每小题1．5分，满分22．5分）听第6段材料，回答第6．7题。
6．What are the speakers mainly talking about? A．A drama． B．A cartoon． C．A documentary． 7．How does the woman feel about this story?A．Surprised． B．Disgusted． C．Touched．听第7段材料，回答第8至10题。
湖南师大附中2012届高三第三次月考试卷-英语
湖南师大附中2012届高三月考试卷（三）英语试题本试卷分为四个部分，包括听力、语言知识运用、阅读和书面表达。
时量120分钟。
满分150分。
Part I Listening Comprehension （30 marks）Section A （22．5 marks）Directions：In this section, you will hear six conversations between two speakers．For each conversation，there are several questions and each question is followed by three choices marked A，B and C．Listen carefully and then choose the best answer for each question．You will hear each conversation TWICE．Example:When will t he magazine probably arrive?A．Wednesday. B．Thursday. C．Friday.The answer is B.Conversation 11．Where did the conversation take place?A．At an airport. B．On a plane. C．On a train.2．Why isn’t the woman going straight to the USA?A．To visit other places.B．To meet some Japanese friends.C．To save money.Conversation 23．Why did the m an shop at Sun Fashion Shop?A．Because of the shop’s advertisement of a ―Clearance Sale‖.B．Because the shirts fitted him perfectly.C．Because the products were said to be good.4．What happened to the T-shirts the man bought after washing?A．They turned to be shabby.B．They became smaller.C．They lost their colors.Conversation 35．What did the man do to prepare for the Christmas?A．He has done some shopping.B．He has done nothing.C．He has made some plans.6．How much does the man always spend for Christmas?A．$ 250. B．$ 750. C．$ 1,100.Conversation 47．What is the unpleasant part of being a taxi driver according to Nancy?A．It’s necessary to deal with different people.B．She has to work when the weather is bad.C．It’s sometimes dangerous to drive at night.8．Which of the following is true about the people Nancy meets?A．They’re usually difficult to please.B．They’re different in personality.C．They’re talkative and generous with tips.9．What do we learn about Nancy from the conversation?A．She plans to quit her job.B．She is very familiar with the city.C．She is unsatisfied.Conversation 510．How long had it been since they played the game last time?A．Exactly a week. B．A couple of days. C．Several weeks. 11．What was the man busy doing last night?A．He was working in the library.B．He was doing a part-time job with Frank.C．He was working on his Chemistry project.12．What’s the real reason why the man hesitate to play with the woman?A．His stomach hurt.B．He was fed up with being a loser.C．He was still concerned about his project.Conversation 613．Where does Susan have to go at 12:30?A．To school.B．To the dentist’s.C．To Julie’s home.14．What will Susan do after she cooks dinner?A．Clean the dishes.B．Help Julie with her project.C．Call a friend.15．Why can’t they watch a video at Susan’s house?A．Susan will finish her history assignment.B．Susan’s mother will ask her to do something else.C．The video machine doesn’t work.Section B （7．5 marks）Directions：In this section, you will hear a short passage．Listen carefully and then fill inthe numbered blanks with the information you have heard．Fill in each blank with NO MORETHAN THREE WORDS．You will hear the short passage TWICE．Kid AthletesSection A （15 marks）Directions：For each of the following unfinished sentences there are four choices marked A,B,C and D．Choose the one that best completes the sentence．Example：The wild flowers looked like a soft orange blanket _______ the desert．A．covering B．covered C．cover D．to coverThe answer is A．21．It just doesn’t make sense to me why students like dining outside there is a canteen inside our school.A．unless B．when C．as D．where22．It was in this cottage five-year-old George observed his father die of cancer that he determined to turn doctor when h e grew up.A．where B．that C．when D．after23．The thought suddenly occurred to me we might as well sell the small expensive house in the city to buy a big but cheap one in the suburb.A．and B．whether C．when D．that 24．Suspected of having escaped the lecture, the naughty student about what he was doing when we were in the lecture hall yesterday afternoon.A．questioned B．will question C．is being questioned D．had been questioned 25．The young doctor’s work marvels: the patient is now completely well.A．worked B．has worked C．was working D．will work 26．—Would you give me some advice on how to improve my English in terms of my situation?—Oh, sorry. What is that? I about something else.A．thought B．am thinking C．was thinking D．had thought27．—I hope to meet Ms King the day Professor Smith comes to visit us here in Changsha.—I’m afraid she a speech in Guangzhou then.A．was giving B．have given C．will have given D．will be giving 28．How pleased Mr Robinson was the teacher tell him about his son at school!A．hear B．to hear C．hearing D．heard29．The citizens all sang high praise for the measures to protect Acropolis they saw last week.A．carry out B．carrying out C．carried out D．to carry out30．As Susan was seated in front of the TV, the disaster, she thought she could do something for those in need.A．watched B．watching C．to watch D．having watched 31．—Didn’t you wait for John last night?—No, but we . He didn’t return to the dormitory at all!A．could B．needn’t have C．didn’t need to D．should have 32．South of our school and the stadium , known as Taozi lake.A．lie a lake B．does a lake lie C．lies a lake D．do a lake lie33．The lazy boy must have been dismissed last week, he?A．hasn’t B．haven’t C．doesn’t D．didn’t34．His attitude towards life is more positive in comparison to he held one year ago.A．it B．one C．that D．the one35．One can gain a lot of experience while doing a part-time job. , it can broaden one’s h orizons.A．After all B．Otherwise C．In a word D．MeanwhileSection B （18 marks）Directions：For each blank in the following passage there are four words or phrases marked A,B, C and D．Fill in each blank with the word or phrase that best fits the context．The U.S. economy added 103,000 jobs in September, but the nation’s unemployment rate held steady at 9.1 percent for the third straight month. Although September's job 36 was stronger than most economists were expecting, it is still not growing fast enough for the millions of Americans 37 for work.In many U.S. cities, frustration over the scarcity（供不应求）of jobs is spilling out into the streets in the 38 of protests, like the "Jobs Not Cuts" rally in Washington.Many, including rapper Godfrey James, say lawmakers are not doing enough to help 39 Americans.Experts say hiring is likely to remain weak for the remainder of the year as companies wait for the economy to 40In New York, where the "Occupy Wall Street" movement appears to be gaining momentum（势头）, activists say the richest one percent own most of the country's wealth."I feel like the middle class has been almost completely 41 now. Now, you have got the bottom class and the top class," said one protester.42 , about 14 million Americans are unemployed, nearly 40 percent have been out of work for more than six months.President Barack Obama, who is running for re-election next year, is pressuring Congress to pass a $450 billion job creation plan. Republicans, who see the economy as the 43 weakness, have blocked many of his initiatives（提案）and are 44 to approve the package of tax cuts and public spending.But small business owner Dave Finnegan says Americans need to remind politicians who's 45 in charge."This is how things get done," said Finnegan. "That building, the Capitol building is only a place where they vote on stuff, it's not a place where things originate. Things 46 with people in the street. This is a democracy and it has to start here."While better than expected job numbers last month have helped calm fears of a new recession（不景气）, the nation's chronic high unemployment is expected to be a major issue in 2012. And as the electiondraws near, analysts say the weak economy is likely to 47 more rallies.36．A．growth B．fall C．decrease D．drop 37．A．answering B．appealing C．acting D．looking 38．A．course B．form C．case D．possession 39．A．unexpected B．uneducated C．unemployed D．unprepared 40．A．manage B．support C．improve D．convey 41．A．wiped out B．put aside C．turned over D．focused on 42．A．Nevertheless B．Traditionally C．Similarly D．Altogether 43．A．their B．president’s C．protesters’D．our 44．A．inappropriate B．unlikely C．arbitrary D．positive 45．A．really B．equally C．simply D．previously 46．A．associate B．appear C．create D．originate 47．A．result B．lead C．fuel D．contributeSection C （12 marks）Directions： Complete the following passage by filling in each blank with one word that best fits the context．Michelle and I are saddened to learn of the passing of Steve Jobs. Steve was 48. the greatest of American innovators – brave enough to think 49. , bold enough to believe he could change the world, and talented enough to do it.By building one of the planet’s most successful companies from his garage, he exemplified the spirit of American ingenuity（独创性）. By making computers personal 50. putting the internet in our pockets, he made the information revolution not only accessible, but intuitive and fun. And by turning his talents to storytelling, he has brought joy to millions of children and grownups 51. . Steve was fond of saying that he lived every day like 52. was his last. 53. he did, he transformed our lives, redefined entire industries, and achieved one of the rarest feats in human history: he changed the way each of us sees the world.The world has lost a visionary. And there may be 54. greater tribute to Steve’s success than the fact that 55. of the world learned of his passing on a device he invented.Part ⅢReading Comprehension （30 marks）Directions：Read the following passages．Each passage is followed by several questions or unfinished statements．For each of them there are four choices marked A, B, C, and D．Choose the one that fits best according to the information given in the passage．AWhen their parents were children, they imagined a future standing in front of a class of pupils or doing the rounds as a doctor．But today's British teenagers, a survey suggests, seem to have set their sights only on becoming the next Leona Lewis or Wayne Rooney．Researchers questioned 3,000 teenagers about their ambitions and also asked parents about their youthful career hopes．According to the survey, youngsters dream of a celebrity lifestyle, perhaps after finding fame through shows such as the X Factor, and of being actors or sports stars．Copying the likes of Rooney and David Beckham was the top career ambition of today's teenagers, cited by 12 percent．Almost as many, 11 percent, wanted to be pop stars, and the same proportion dreamed of being actors．The success of celebrity chefs such as Jamie Oliver and Gordon Ramsay is likely to explain why becoming a chef is now the dream of 5 percent, a career ambition which did not figure in the list of 25years ago．A quarter of a century back teaching was the top career choice, cited by 15 percent．These days the job is chosen by only 4 percent．Of the traditional professions, only law has risen in popularity．The survey also suggests that more girls dream of becoming doctors and boys want careers as astronauts or firefighters．Child psychologist Laverne Antrobus said the findings reflect today's celebrity culture and warned children against unrealistic dreams．"Children see footballers, pop stars and actors on TV and their lives look exciting, glamorous and fun," she said．"It is hard for them to realize that they are the end product of a lot of ingredients including talent, determination and years of hard work．Wayne Rooney is not on the pitch by chance．"As Antrobus pointed out, there is absolutely nothing wrong with children having big dreams, but "these have to be based on reality," she said．56．The study suggests that today's British teenagers want to ______ sports stars, pop stars and actors．A．have the talent of B．work as hard asC．enjoy the celebrity lifestyles of D．become successful by chance like57．Which of the following statements is TRUE?A．12 percent of British teenagers surveyed wanted to become chefs．B．22 percent of British teenagers surveyed wanted to be pop stars or actors．C．None of the traditional professions are favored by today's British teenagers, the survey suggests．D．Teaching, though less popular, seems to remain one of the top career choices on the list．58．According to child psychologist Laverne Antrobus, the change in career ambitions suggested by the study .A．represents progress B．mirrors today’s celebrity cultureC．shows how materialistic youngsters are D．suggests British teenagers watch too much TV 59．What does the underlined sentence "Wayne Rooney is not on the pitch by chance．" mean?A．Wayne Rooney does not get to play much today．B．Wayne Rooney didn't get into sport by chance．C．Wayne Rooney doesn't believe in luck when he is playing．D．Wayne Rooney didn't become successful by luck．60．The expert quoted in the article believes ______．A．there's no point in teenagers having dreamsB．it is wrong to desire to live the life of a celebrityC．young Britons have the same ambitions as their parentsD．children should set practical goals when they think of their careerBThe past ages of man have all been carefully labeled by anthropologists （人类学家）．Descriptions like "Palaeolithic（旧石器时代的）Man" ．"Neolithic（新石器时代的）Man" ,etc．，neatly sum up whole periods．When the time comes for anthropologists to turn their attention to the twentieth century, they will surely choose the label" Legless Man"．Histories of the time will go something like this: "in the twentieth century, people forgot how to use their legs．Men and women moved about in cars, buses and trains from a very early age．There were lifts in all large buildings to prevent people from walking．And the surprising thing is that they didn't use their legs even when they went on holiday．"The future history books might also record that we were deprived of the use of our eyes．In our hurry to get from one place to another, we failed to see anything on the way．Air travel gives you a bird's-eye view of the world．When you travel by car or train, an unclear picture of the countryside constantly smears the windows．Car drivers, especially, are mixed with the urge to go on and on: they never want to stop．The typical twentieth-century traveler is the man who always says" I've been there．"You mention the remotest, and someone is bound to say "I've been there"—meaning, "I drove through it at 100 miles an hour on the way to somewhere else．"When you travel at high speeds, the present means nothing: you live mainly in the future because you spend most of your time looking forward to arriving at some other place．But actual arrival, when it is achieved, is meaningless．You want to move on again．By traveling like this, you suspend all experience．The traveler on foot, on the other hand, lives constantly in the present．For him traveling and arriving are one and the same thing: he arrives somewhere with every step he makes．He experiences the present moment with his eyes, his ears and the whole of his body．At the end of his journey he feels a delicious physical tiredness．He knows that sound, satisfying sleep will be his: the just reward of all true travelers．61．Anthropologists label man nowadays "Legless" because______．A．people forget how to use their legs B．people prefer cars, buses and trainsC．lifts prevent people from walking D．there are a lot of transportation devices 62．Travelling at high speed means______．A．people’s focus on the futureB．a pleasureC．satisfying drivers’ great thrillD．a necessity of life63．Why does the author say ―we are deprived of the use of our eyes‖?A．People won’t use their eyes.B．In traveling at high speed, eyes become useless.C．People can’t see anything on their way of travel.D．People want to sleep during traveling.64．What does ―a bird’s-eye view‖ mean?A．See view with bird’s eyes.B．A bird looks at a beautiful view.C．It is a general view from a high position looking down.D．A scenic place.65．What is the purpose of the author in writing this passage?A．Legs become weaker.B．Modern means of transportation make the world a small place.C．There is no need to use eyes.D．The best way to travel is on foot.CIf you see someone touched on the cheek, and feel as if your own cheek has been touched, then you have mirror-touch synesthesia (共感觉), a condition that causes people to feel the touches that they see others receive.As the name implies, a mirror effect is involved. If a mirror-touch synesthete is standing opposite someone and the non-synesthete is hit in the right arm, the synesthete will feel the blow in his or h er left arm. If the two are standing next to each other, contact with the non-synesthete’s right arm will be felt in the synesthete’s right arm.People with mirror-touch synesthesia have very active mirror neurons(神经细胞) that can produce intense sensations of emotional empathy(同情). Such people can not only imagine the pain of others, but often feel as if it were their own.Besides feeling what others feel, mirror-touch synesthetes are often morally extremely sensitive; many claim to be unable to understand how people can laugh at the misfortunes of others, and to find action and horror movies unbearable to watch.In 2003, Sarah Jane-Blak9emore, a neuroscientist(神经科学家) at University College London, net a 39-year-old woman who confirmed that she could feel contact that she only observed, such as a pinch(掐). She had thought all people were that way; it had never occurred to her that mirror-touch synesthesia was unusual. Researchers later discovered that 11 of the woman’s relatives had another type of synesthesia, known as color-grapheme synesthesia.Recent studies have shed more light on the phenomenon. Researchers have used brain scans, touch tests, and questionnaires to look for mirror-touch synesthesia in 10 subjects. Brain scans have shown that certain areas of the brain are extremely active when mirror-touch synesthetes see someone being touched, while in touch tests they often mistook an observed touch for the one applied to themselves.Learning why some people are highly sensitive to the emotions of others could teach us more about those who aren’t.66．If you’re a mirror-touch synesthete, which of the following best shows the function of the mirror effect in you?A．When you see someone with the broken leg, you try to help.B．When someone hits you on the head, you feel pain.C．When someone touches your left arm, your right arm feels it.D．When someone hits his left leg, your right leg feels it.67．According to the text, what causes mirror-touch synesthesia?A．Mirror neurons. B．A mirror effect. C．emotional empathy. D．Genes.68．All the following of another person can be sensed by a mirror-touch synesthete EXCEPT .A．being touched B．inner feelings C．knowledge D．pain69．Why is the 39-year-old woman mentioned in Paragraph 5?A．Because 11 of her relatives have synesthesia as well.B．Because she can feel pinch she only observes.C．Because Sarah Jane-Blakemore knew her well.D．Because she had never realized she had synesthesia.70．Which of the following statements is TRUE, according to the text?A．We still know little about mirror-touch synesthesia.B．A mirror-touch synesthete is created by horror films.C．Brain scans show the crain is active when touched.D．We can learn about normal people by studying mirror-touch synesthesia.Part IV Writing（45 marks）Section A（10 marks）Directions：Read the following passage．Fill in the numbered blanks by using the information from the passage．Write NOMORE THAN THREE WORDS for each answer．Stage FrightStage fright is not commonly thought of as a phobia. Officially, it can be recognized as a subset of glossophobia, or fear of public speaking, which is itself a type of social phobia. Many people who perform on a public stage, from kids in school to professional actors, are potentially at risk for stage fright. Even Hollywood lore is filled with tales of performers who have battled with this phobia.People suffering from stage fright have probably dealt with endless questions from family and friends as to why they put themselves through the torment. Two reasons, according to some experts, can account for this phenomenon. First, most performers haven’t had much practice at it. Any unfamiliar activity creates some stress. Second, none of them likes to be evaluated and they dislike the thought of having others examine them too closely.Then, if one suffers from stage fright, what symptoms can be experienced? The phobia generally begins weeks or months before the performance; they may begin to feel jumpy. As the date of the performance draws closer, the symptoms worsen. A few hours before the time when the performers participate in the show, they may meet some problems such as diarrhea(腹泻), and heart palpitations. Both during and after a show, one may even suffer from dry mouth, which is a very annoying problem to have. What’s worse, their hands may shake so much that they can’t read their own notes.It is important to find healthy ways to cope with stage fright. Many performers turn to self-medication, in an effort to dull the pain. This is never a good choice for anyone, because it can turn into a dangerous cycle for those who perform regularly. Like any phobia, stage fright is highly treatable. Many people with stage fright think that their performance will not be ―good enough‖, thereby disappointing their audience and ruining their own careers. Therapy can help you learn to replace these negative messages with more rational thoughts and with the help of some therapists you will also be taught relaxation exercises that you can do when the anxiety becomes overwhelming.Stage fright is remarkably common, and many performers never seek help. Treated properly, however, the condition can be successfully managed.Directions：Read the following passage．Answer the questions according to the informationgiven in the passage．Forty-three years seems like a long time to remember the name of a mere acquaintance．I have forgotten the name of an old lady, who was a customer on the paper route in my home town when I was a twelve-year-old boy．Yet it dwells in my memory that she taught me a lesson in forgiveness that I shall never forget．On a winter afternoon, a friend and I were throwing stones onto the slanted roof of the old lady's house from a spot near her backyard．The object of our play was to observe how the stones changed to missiles as they rolled to the roof’s edge and shot out into the yard like comets(彗星) falling from the sky．I found myself a perfectly smooth rock and threw it out．The stone was too smooth, however, so it slipped from my hand as I let it go and headed straight not for the roof but for a small window on the old lady's back porch．At the sound of fractured glass, we knew we were in trouble．We turned tail8）and ran faster than any of our missiles flew off her roof．I was too scared about getting caught that first night to be concerned about the old lady with the broken window in winter．However, a few days later, when I was sure that I hadn't been discovered, I started to feel guilty for her misfortune．She still greeted me with a smile each day when I gave her the paper, but I was no longer able to act comfortable in her presence．I made up my mind that I would save my paper delivery money, and in three weeks I had the seven dollars that I calculated would cover the cost of her window．I put the money in an envelope with a note explaining that I was sorry for breaking her window and hoped that the seven dollars would cover the cost for repairing it．I waited until it was dark, snuck up to the old lady's house, and put the letter I didn't sign through the letter slot in her door．My soul felt redeemed and I could have the freedom of, once again, looking straight into the old lady's kind eyes．The next day, I handed the old lady her paper and was able to return the warm smile that I was receiving from her．She thanked me for the paper and gave me a bag of cookies she had made herself．I thanked her and proceeded to eat the cookies as I continued my route．After several cookies, I felt an envelope and pulled it out of the bag．When I opened the envelope, I was stunned．Inside were the seven dollars and a short note that said, "I'm proud of you．"81. How old is the author now? (No more than 2 words) (2 marks)55 / Fifty-five /He’s 55.82. what happened to the old lady’s house that winter afternoon? (No more than 12 words) (2 marks)A small window of her house was broken by the author.83. why did the author put an envelope with seven dollars and a note in the old lady’s door?(No more than14 words) (3 marks )He wanted to apologize/say sorry and cover the cost for repairing her window. / To apologize and cover the cost of her window. /To say sorry and cover the cost of her broken window.84. why did the old lady return the author seven doliars and a note ―I’m proud of you‖? (No more than 15words) (3 marks)Because she wanted to show her forgiveness to the author./ Because she wanted to express that she had already forgiven the author.Section C （25 marks）Directions：Write an English composition according to the instructions given below in Chinese．正在念高三的你，青春年少，有几许欢乐，亦在诸多茫然。
安徽省萧县中学2012届高三数学第三次月考试题 理 新人教版
萧县中学2012届高三数学第三次月考理科试题一.选择题：本大题共10小题，每小题5分，共50分.在每小题给出的四个选项中，只有一项是符合题目要求的. 1．已知复数512iz i+=，则它的共轭复数z 等于 （ ）A ．2-iB ．2+iC ．-2+iD ．-2-i2．函数2sin(2)y x x =+的导数为 （ ） A ．2'cos(2)y x x =+ B ．2'2sin(2)y x x =+C ．2'(41)cos(2)y x x x =++D ．2'4cos(2)y x x =+3.设,,x y R ∈则“2x ≥且2y ≥”是“224x y +≥”的 （ ）A ．充分而不必要条件B ．必要而不充分条件C ．充分必要条件D ．既不充分也不必要条件4．已知函数2,0(),()(1)01,0x x f x f a f x x >⎧=+=⎨+≤⎩若，则实数a 的值等于 （ ）A ．-3B ．-1C ．1D ．35.函数(1)xxa y a x=>的图像大致形状是 （ ）6．在等差数列{}n a 中，若4681012120a a a a a ++++=，则91113a a -的值为 ( ) A ．14 B ．15 C ．16D ．177. 已知O 是坐标原点，点)2,1(A ，若点),(y x M 为平面区域210100x y x y x -+≥⎧⎪++≥⎨⎪≤⎩上的一个动点 ，则OM OA ⋅的最大值是 （ ） A ．4 B ．3 C ．2 D ．18．若)(x f 是定义在R 上的函数，对任意的实数x ，都有4)()4(+≤+x f x f 和)2011(,4)3(,2)()2(f f x f x f =+≥+且的值是（ ）A ．2010B ．2011C ．2012D ．20139．函数11y x =-的图像与函数2sin (24)y x x π=-≤≤的图像所有交点的横坐标之和等于 （ ） A ．2B ．4C ．6D ．810．设()0,0A ,()4,0B ，()4,4C t +,()(),4D t t R ∈.记()N t 为平行四边形ABCD 内部（不含边界）的整点的个数，其中整点是指横、纵坐标都是整数的点，则函数()N t 的值域为 （ ）A ．{}9,10,11B ．{}9,10,12C ．{}9,11,12D ．{}10,11,12二．填空题：本大题共5小题，每小题5分，共25分．11.若数列{}n a 中，*,2122N n n n a n ∈++=，则数列{}n a 中的项的最小值为_________. 12．不等式13x x+<的解为 . 13．已知,2)4tan(=+πx 则x x 2tan tan 的值为__________.14．已知直角梯形ABCD 中，AD //BC ,090ADC ∠=,2,1AD BC ==,P 是腰DC 上的动点，则3PA PB +的最小值为____________. 15. 若整数m 满足不等式R x x m x ∈+<≤-,2121，则称m 为x 的“亲密整数”，记作{}x ，即{}m x =，已知函数{}x x x f -=)(．给出以下四个命题： ① 函数R x x f y ∈=),(是周期函数且其最小正周期为1； ② 函数R x x f y ∈=),(的图象关于点Z k k ∈),0,(中心对称； ③ 函数R x x f y ∈=),(在]21,21[-上单调递增； ④ 方程)sin(21)(x x f ⋅=π在]2,2[-上共有7个不相等的实数根. 其中正确命题的序号是 ．（写出所有正确命题的序号）．三．解答题：本大题共6小题，共75分，解答应写出文字说明，证明过程或演算步骤。
(新课标)高三理综下学期第三次月考.docx
2013-2014学年度下学期高三二轮复习理综综合验收试题（3）【新课标】本试卷分第I卷（选择题）和第II卷（非选择题）两部分，其中第I卷第33-41题为选考题，其它题为必考题。
考生作答时，将答案答在答题卡上，在本试卷上答题无效。
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3、请按照题号在各题的答题区域（黑色线框）内作答，超出答题区域书写的答案无效。
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5、做选考题时，考生按照题目要求作答，并用2B铅笔在答题卡上把所选题目对应的题号涂黑。
可能用到的相对原子质量：H 1 C 12 0 16 Na 23 S 32 Mg 24 Cu 64第I卷一、选择题：本题共13小题，每小题6分，在每小题给出的四个选项中，只有一项是符合题目要求的。
1.下列有关细胞结构和功能的叙述，不正确的是A.线粒体和核糖体都是既含有核酸又含有膜的细胞器B.核孔可以实现核质之间频繁的物质交换和信息交流C.唾液腺细胞和胰腺细胞中高尔基体数量较多D.内质网膜具有一定的流动性2.下列有关变异的叙述，不正确的是A.由配子直接发育而来的个体，不论体细胞中含有几个染色体组都叫单倍体B.三倍体无子西瓜属于不可遗传变异C.二倍体无子番茄的获得利用了生长素促进果实发育的原理D.冠心病属于多基因遗传病3.下列各项中，依次为实验试剂、作用或实验结果，其中不正确的是A.健那绿，活细胞染料，把线粒体染成蓝绿色B.毗罗红，把DNA染成红色，观察DNA的分布C.体积分数为50%的酒精溶液，洗去浮色aueD.漠麝香草酚蓝水溶液，检验CO?,溶液由蓝一绿一黄4.右图表示人体生命活动调节过程，请据图判定下列说法，不正确的是A.假如细胞1是垂体细胞，细胞2可以表示甲状腺细胞B.假如细胞1是甲状腺细胞，细胞2可以表示垂体细胞C.细胞1的分泌物只运输给它的靶细胞D.细胞1的分泌物之所以能与靶细胞特异性结合是由于靶细胞有特异性的受体5.关于生命活动调节的叙述，正确的是A.当人体缺水时，细胞外液的渗透压会降低，从而产生渴觉B.血糖低于正常值时，肝糖原、肌糖原可以分解成葡萄糖入血C.植物体内乙烯的作用只是促进果实成熟D.在植物生长发育和适应环境变化的过程中，各种激素并不是孤立的起作用的6.下列有关种群、群落、生态系统和生物进化的有关叙述，不正确的是A.研究种群“S”型增长曲线在鱼牧养殖生产上的应用时，人们发现种群数量保持在K值左右可获得最大的经济效益B.人类活动往往会使群落演替按照不同于自然演替的速度和方向进行C.生态系统的物质循环，这里的生态系统，指的是地球上最上的生态系统一生物圈D.自然选择决定生物进化的方向7.下列说法正确的是A.糖类、油脂、蛋白质在一定条件都能发生水解反应B.苯只能发生取代反应，不能发生加成反应C.棉、麻、羊毛及合成纤维完全燃烧都只生成CO?和凡0D.漠乙烷与NaOH的乙醇溶液共热生成乙烯8.分子式为CH。
湖南省长沙市长沙县第六中学高三上学期第三次月考数学文试卷缺答案
数学（文）试题总分：150 时量：120分钟 命题：高三文科数学备课组一、选择题：每小题5分，在每小题给出的四个选项中，只有一项是符合题目要求的。
1、复数212i i+-的共轭复数是（ ） A ．35i - B ．35i C ．i - D ．i2. 已知{n a }是公差为2的等差数列，n S 为{n a }的前n 项和，若53S S =，则4a =（ ）A.-4B.-3C.-2D.-13. 下列函数中，既是偶函数又在+∞（0，）单调递增的函数是（ ） A ．3y x = B ．1y x =+ C ．21y x =-+ D ．2x y -= 4. 已知向量()1,1=-a ,向量()1,2=-b ,则=•+a b a )2(（ ）A ．1-B ．0C ．1D ．25. 已知角θ的顶点与原点重合，始边与x 轴的正半轴重合，终边在直线2y x =上，则cos2θ=( )A ．45-B ．35-C ．35D ．456. ABC ∆中，点D 在AB 上，满足2=．若b CA a CB ==,，则CD =( )A ．3231+ B ．3132+ C ．5453+ D ．5354+ 7. 设n S 为等差数列{}n a 的前n 项和，若11a =，公差2d =，224k k S S +-=，则k = （ ）A ．8 B.7 C.6 D.58. 函数)2)(2sin()(πϕϕ<+=x x f 的图象向左平移6π个单位后得到函数)(x g 的图象，且)(x g 是R 上的奇函数，则函数)(x f 在⎥⎦⎤⎢⎣⎡2,0π上的最小值为（ ） A. 23 B. 21 C.21- D. 23- 9．函数()1cos f x x x x ⎛⎫=-⎪⎝⎭（x ππ-≤≤且0x ≠）的图象可能为（ ）A ．B ．C ．D ．10. 已知71cos =α，1413)cos(=-βα，且20παβ<<<，则=β （ ） A.4π B.6π C.3π D.π125 11.已知函数)(x f 是),(+∞-∞上的偶函数，若对于0≥x ，都有)()2(x f x f -=+，且当)2,0[∈x 时，)1(log )(2+=x x f ，则=+-)2012()2011(f f （ ）A ．1-B ．3log 12+-C ． 3log 12+D ．112. 设函数()sin()cos()(0,)2f x x x πωϕωϕωϕ=+++><的最小正周期为π，且()()f x f x -=，则（ ）A ．()f x 在0,2π⎛⎫ ⎪⎝⎭单调递减 B ．()f x 在3,44ππ⎛⎫ ⎪⎝⎭单调递减 C ．()f x 在0,2π⎛⎫ ⎪⎝⎭单调递增 D ．()f x 在3,44ππ⎛⎫ ⎪⎝⎭单调递增 二、填空题：本大题共4小题，每小题5分.13．若数列{a n }的前n 项和2133n n S a =+，则{n a }的通项公式是n a ＝__________． 14．如图是函数),0)(sin()(πϕϕω<>+==a x A x f y 图像的一部分.则函数)(x f 的解析式为 。
2012届高三第三次月考数学试题(理科)2012届高三第三次月考数学试题(理科)
2012届高三第三次月考数学试题(理科）（本试卷共4页，21小题，满分150分.考试用时120分钟）注意事项：1．答卷前，考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、试室号、座位号填写在答题卡上.2．选择题每小题选出答案后，用2B 铅笔把答题卡上对应题目选项的答案信息点涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上.3．非选择题必须用黑色字迹钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上；如需改动，先划掉原来的答案，然后再写上新的答案；不准使用铅笔和涂改液.不按以上要求作答的答案无效. 一、选择题：本大题共8小题，每小题5分，共40分. 在每小题给出的四个选项中，只有一项符合题目要求.1．设集合{}23,log P a =，{},Q a b =，若{}0PQ =，则P Q =（ ）A ．{}3,0B ．{}3,0,2C ．{}3,0,1D ．{}3,0,1,22．若(4)a i i b i +=+其中,a b ∈R ，i 是虚数单位，则a b -（ ）A ．3B ．5C ．-3D ．-53．“||2x <”是“260x x --<”成立（ ）条件.A ．充分而不必要B ．必要而不充分C ．充要D ．既不充分也不必要4．已知等比数列{}n a 中，12a =，且有24674a a a =，则3a =( ) A ．1 B ．2 C ．14 D ． 1215.5．已知回归直线的斜率的估计值是1.23，样本点的中心为(4,5)，则回归直线的方程是( )A.ˆ 1.234yx =+ B. ˆ 1.230.08y x =- C. ˆ 1.230.8y x =+ D. ˆ 1.230.08y x =+ 6．若5(1)ax -的展开式中3x 的系数是80，则实数a 的值为（ ） A ．-2B ．22C ．34D ．27．如图，正方体1AC 的棱长为1，过点A 作平面1A BD 的垂线， 垂足为点H ，则以下命题中，错误．．的命题是（ ） Ａ．点H 是1A BD △的垂心Ｂ．AH 的延长线经过点1C Ｃ．AH 垂直平面11CB D Ｄ．直线AH 和1BB 所成角为458．已知函数2()24(03),f x ax ax a =++<<若1212,1,x x x x a <+=-则（ ） A ．12()()f x f x = B ．12()()f x f x <C ．12()()f x f x >D ．1()f x 与2()f x 的大小不能确定二、填空题（本大题共7小题，分为必做题和选做题两部分．每小题5分，满分30分）（一）必做题：第9至13题为必做题，每道试题考生都必须作答． 9．已知ABC ∆中，1,2a b ==，45B =，则角A 等于_______10．如图，三个几何体，一个是长方体、一个是直三棱柱，一个是过圆柱上下底面圆心切下圆柱的四分之一部分，这三个几何体的主视图和俯视图是相同的正方形，则它们的体积之比为 ．11. 右面框图表示的程序所输出的结果是_______12．若直线y x m =-与圆22(2)1x y -+=有两个不同的公共点，则实数m 的取值范围为 ．13．已知双曲线2221(0)9x y a a -=>中心在原点，右焦点与抛物线216y x =的焦点重合，则该双曲线的离心率为___________（二）选做题：第14、15题为选做题，考生只能选做其中一题，两题全答的，只计前一题的得分.是开始12,1i s ==10i ≥?s s i =⨯ 1i i =-输出s 结束否14．（坐标系与参数方程选做题）曲线2sin (sin x y θθθ=⎧⎨=⎩为参数)与直线y a =有两个公共点，则实数a 的取值范围是_______.15．（几何证明选讲选做题）如图，在⊙O 中，AB 为直径，AD 为 弦，过B 点的切线与AD 的延长线交于点C ，且AD DC =，则sin BCO ∠ =_________三、解答题：本大题共6小题，满分80分．解答须写出文字说明、证明过程和演算步骤．16．（本小题满分12分）已知函数44sin 23sin cos cos y x x x x =+-， （1）求该函数的最小正周期和最小值； （2）若[]0,πx ∈，求该函数的单调递增区间.17．（本小题满分12分）某工厂2011年第一季度生产的A 、B 、C 、D 四种型号的产品产量用条形图表示如图，现用分层抽样的方法从中选取50件样品参加四月份的一个展销会： （1）问A 、B 、C 、D 型号的产品各抽取多少件？（2）从A 、C 型号的产品中随机的抽取3件，用ξ表示抽取A 种型号的产品件数，求ξ的分布列和数学期望.教案某温度、压强下化学教案将一定量的反应物通入密闭容器中进行以上的反应(此条18．（本小题满分14分）在如图所示的多面体中，EF ⊥平面AEB ，AE EB ⊥,//AD EF ，//EF BC ，24BC AD ==，3EF =，2AE BE ==，G 是BC 的中点．（1）求证：BD EG ⊥；（2）求平面DEG 与平面DEF 所成锐二面角的余弦值.A D50100 150 200 OA B C D 产品型号产量（单位件）19．（本小题满分14分）已知数列{}n b 满足11124n n b b +=+，且172b =，n T 为{}n b 的前n 项和. （1）求证：数列1{}2n b -是等比数列，并求{}n b 的通项公式； （2）如果对于任意*n ∈N ，不等式1227122nkn n T ≥-+-恒成立，求实数k 的取值范围.20．（本小题满分14分）已知点P 是圆221:(1)8F x y ++=上任意一点，点2F 与点1F 关于原点对称.线段2PF 的中垂线m 分别与12PF PF 、交于M N 、两点．（1）求点M 的轨迹C 的方程；（2）斜率为k 的直线l 与曲线C 交于,P Q 两点,若0OP OQ ⋅=（O 为坐标原点），试求直线l 在y 轴上截距的取值范围．21．（本小题满分14分）已知二次函数()y g x =的图象经过点(0,0)O 、(,0)A m 与点(1,1)P m m ++，设函数()()()f x x n g x =-在x a =和x b =处取到极值，其中0m n >>，b a <.（1）求()g x 的二次项系数k 的值；（2）比较,,,a b m n 的大小（要求按从小到大排列）；（3）若22m n +≤，且过原点存在两条互相垂直的直线与曲线()y f x =均相切，求()y f x =.2012届高三第三次月考理科数学参考答案与评分标准一．选择题：共8小题，每小题5分，满分40分题号 1 2 3 4 5 6 7 8 答案CBAADDDB1．【解析】由{}0PQ =,得2log 0a =，∴1a =，从而=0b ，{}3,0,1P Q =.选C.2．【解析】由(4)4a i i ai b i +=-+=+154a ab b =⎧⇒⇒-=⎨=-⎩，选B ． 3．【解析】由||2x <得到22x -<<，由260x x --<得到2x -<＜3，选A.4．【解析】222467574,4a a a a a ==，572a a =，所以22311, 1.2q a a q ===选A ． 5．【解析】由条件知，4x =，5y =，设回归直线方程为ˆ 1.23yx a =+，则 1.230.08a y x =-=.选D.6．【解析】5(1)ax -的展开式中含3x 的项为232335()(1)10C ax a x -=，由题意得31080a =，所以2a =.选D.7.【解析】因为三棱锥A —1A BD 是正三棱锥，故顶点A 在底面的射影是底面中心，A 正确；平面1A BD ∥平面11CB D ，而AH 垂直平面1A BD ，所以AH 垂直平面11CB D ，C 正确；根据对称性知B 正确.选D.8．【解析】函数的对称轴为1x =-,设1202x x x +=，由03a <<得到11122a --<<，又12x x <，用单调性和离对称轴的远近作判断,故选B.二．填空题：共7小题，每小题5分，满分30分．其中14~15题是选做题，考生只能选做一题．9．30︒ 10．4:2:π 11．1320 12．(22,22)-+ 13．477的快乐”“要敢于14．01a <≤ 15．559.【解析】根据正弦定理,,sin sin a bA B = 21sin 12sin .22a B Ab ⨯∴===,30.a b A ︒<∴= 10.【解析】因为三个几何体的主视图和俯视图为相同的正方形，所 以原长方体棱长相等为正方体，原直三棱柱是底面为等腰直角三角形的直三棱柱，设正方形的边长为a 则，长方体体积为3a ，三棱柱体积为312a ，四分之一圆柱的体积为31π4a ，所以它们的体积之比为4:2:π．11．【解析】该程序框图的作用是计算121110⨯⨯的值.12.【解析】圆心到直线的距离2122222m d m -=<⇒-<<+.13.【解析】抛物线焦点F （4，0）得4c = 又2916,a +=得7a =，故44777e ==.14．【解析】曲线2sin (sin x y θθθ=⎧⎨=⎩为参数)为抛物线段2(11)y x x =-≤≤，借助图形直观易得01a <≤.15.【解析】由条件不难得ABC ∆为等腰直角三角形，设圆的半径为1，则1OB =，2BC =，OC =5，15sin 55BCO ∠==. 三、解答题16．（本小题满分12分）解：（1）()44π3sin 2sin cos 3sin 2cos22sin 26x x x x x x ⎛⎫+--- ⎪⎝⎭== ………… 4分 所以 min π,2T y ==- ………… 6分（2）πππππ2π22πππ26263k x k k k x k k ≤-≤+∈≤≤+∈Z Z令-,，则-,………… 8分 令0,1k =，得到ππ[,]63x ∈-或5π4π[,]63x ∈， ………… 10分与[0,π]x ∈取交集, 得到π[0,]3x ∈或5π[,π]6x ∈, 所以，当[0,π]x ∈时，函数的π5ππ36⎡⎤⎡⎤⎢⎥⎢⎥⎣⎦⎣⎦递增区间是0，和， .………… 12分17．（本小题满分12分）解：（1）从条表图上可知，共生产产品 50+100+150+200=500（件），样品比为50150010= 所以A 、B 、C 、D 四种型号的产品分别取111110010,20020,505,1501510101010⨯=⨯=⨯=⨯=即样本中应抽取A 产品10件，B 产品20件，C 产品5件，D 产品15件.……… 4 分 （2）353152(0)91C P C ξ=== ， 1210531520(1)91C C P C ξ⋅=== 2110531545(2)91C C P C ξ⋅=== ， 31031524(3)91C P C ξ=== ……… 8 分所以ξ的分布列为ξ 0 1 2 3P291 2091 4591 2491……… 10 分204524232919191E ξ=+⨯+⨯= ………12 分18．（本小题满分14分）（1） 解法1证明：∵EF ⊥平面AEB ，AE ⊂平面AEB ，∴EF AE ⊥， 又,AE EB EB EF E ⊥=，,EB EF ⊂平面BCFE ， ∴AE ⊥平面BCFE . …………2分过D 作//DH AE 交EF 于H ，则DH ⊥平面BCFE . ∵EG ⊂平面BCFE ，∴DH EG ⊥. …………4分∵//,//AD EF DH AE ，∴四边形AEHD 平行四边形， ∴2EH AD ==，∴2EH BG ==，又//,EH BG EH BE ⊥，∴四边形BGHE 为正方形，∴BH EG ⊥， ……………6分又,BHDH H BH =⊂平面BHD ，DH ⊂平面BHD ,∴EG ⊥平面BHD . ………………………7分∵BD ⊂平面BHD ,∴BD EG ⊥. ………………………8分（2）∵AE ⊥平面BCFE ，AE ⊂平面AEFD∴平面AEFD ⊥平面BCFE 由（1）可知GH EF ⊥ ∴GH ⊥平面AEFD ∵DE ⊂平面AEFD∴GH DE ⊥ ……………………9分取DE 的中点M ，连结MH ，MG ∵四边形AEHD 是正方形， ∴M H DE ⊥∵,MH GH H =MH ⊂平面GHM ，GH ⊂平面GHM∴DE ⊥平面GHM ∴DE ⊥MG∴GMH ∠是二面角G DE F --的平面角， ………………………12分 由计算得2,2,6GH MH MG ===∴23cos 36GMH ∠== ………………………13分 ∴平面DEG 与平面DEF 所成锐二面角的余弦值为33.………………………14分 解法2BCFEDMHGA∵EF ⊥平面AEB ，AE ⊂平面AEB ，BE ⊂平面AEB ， ∴EF AE ⊥，EF BE ⊥， 又AE EB ⊥,∴,,EB EF EA 两两垂直. ……………………2分以点E 为坐标原点，,,EB EF EA 分别为,,x y z 轴 建立如图所示的空间直角坐标系.由已知得，A （0，0，2），B （2，0，0），C （2，4，0），F （0，3，0），D （0，2，2）， G （2，2，0）. …………………………4分 ∴(2,2,0)EG =，(2,2,2)BD =-，………6分 ∴22220BD EG ⋅=-⨯+⨯=, ………7分 ∴BD EG ⊥. …………………………8分（2）由已知得(2,0,0)EB =是平面DEF 的法向量. ………………………9分设平面DEG 的法向量为(,,)n x y z =， ∵(0,2,2),(2,2,0)ED EG ==，∴00ED n EG n ⎧⋅=⎪⎨⋅=⎪⎩，即00y z x y +=⎧⎨+=⎩，令1x =,得(1,1,1)n =-. ……………12分设平面DEG 与平面DEF 所成锐二面角的大小为θ， 则||23cos |cos ,|3||||23n EB n EB n EB θ=<>=== …………………………13分∴平面DEG 与平面DEF 所成锐二面角的余弦值为33. …………………………14分19．（本小题满分14分）解：（1）对任意*N n ∈,都有11124n n b b +=+，所以1111()222n n b b +-=- 则1{}2n b -成等比数列,首项为1132b -=，公比为12…………2分所以1113()22n n b --=⨯，1113()22n n b -=⨯+…………4分（2）因为1113()22n n b -=⨯+所以2113(1)111123(1...)6(1)1222222212n n n nn n n T --=+++++=+=-+-…………7分 xzyADF EB G C因为不等式1227(122)n kn n T ≥-+-，化简得272nn k -≥对任意*N n ∈恒成立 ……………8分 设272n n n c -=，则1112(1)72792222n n n n n n n n c c ++++----=-= 当5n ≥,1n n c c +≤,{}n c 为单调递减数列，当15n ≤<,1n n c c +>,{}n c 为单调递增数列 …………11分45131632c c =<=,所以, 5n =时, n c 取得最大值332…………13分 所以, 要使272n n k -≥对任意*N n ∈恒成立，332k ≥…………14分20．（本小题满分14分）解：（1）由题意得，12(1,0),(1,0),F F -圆1F 的半径为22，且2||||MF MP = ……… 1分 从而121112||||||||||22||MF MF MF MP PF F F +=+==> ………… 3分 ∴ 点M 的轨迹是以12,F F 为焦点的椭圆, ………… 5分 其中长轴222a =,得到2a =,焦距22c =， 则短半轴1b =椭圆方程为:2212x y += ………… 6分（2）设直线l 的方程为y kx n =+,由2212y kx n x y =+⎧⎪⎨+=⎪⎩ 可得222(21)4220k x knx n +++-=则2222168(1)(21)0k n n k ∆=--+>,即22210k n -+> ① ………… 8分设1122(,),(,)P x y Q x y ,则2121222422,2121kn n x x x x k k --+==++ 由0OP OQ ⋅=可得12120x x y y +=,即1212()()0x x kx n kx n +++= …………10分 整理可得221212(1)()0k x x kn x x n ++++=…………12分即22222(1)(22)4()02121k n knkn n k k +--+⋅+=++11化简可得22322n k =+,代入①整理可得212n >, 故直线l 在y 轴上截距的取值范围是22(,)(,)22-∞+∞． …………14分 21．（本小题满分14分）解：（1）由题意可设()(),0g x kx x m k =-≠，又函数图象经过点(1,1)P m m ++，则1(1)(1)m k m m m +=++-，得1k =.……… 2分（2）由（1）可得2()()y g x x x m x mx ==-=-.所以()()()f x x n g x =-32()()()x x m x n x m n x mnx =--=-++，/2()32()f x x m n x mn =-++， ………… 4分函数()f x 在x a =和x b =处取到极值，故//()0,()0f a f b ==， ………… 5分0m n >>，∴/22()32()()0f m m m n m mn m mn m m n =-++=-=-> ………… 7分/22()32()()0f n n m n n mn n mn n n m =-++=-=-<又b a <，故b n a m <<<. …… 8分（3）设切点00(,)Q x y ，则切线的斜率2000'()32()k f x x m n x mn ==-++又320000()y x m n x mnx =-++，所以切线的方程是322000000()[32()]()y x m n x mnx x m n x mn x x -++-=-++- …… 9分又切线过原点，故3232000000()32()x m n x mnx x m n x mnx -++-=-++-所以32002()0x m n x -+=，解得00x =，或02m n x +=. ………… 10分 两条切线的斜率为1'(0)k f mn ==，2'()2m n k f +=， 由22m n +≤，得2()8m n +≤，∴21()24m n -+≥-， ∴2223()1'()2()()22424m n m n m n k f m n mn m n mn mn +++==-+⨯+=-++≥-， ………………………… 12分12 所以2212(2)()2(1)11k k mn mn mn mn mn ≥-=-=--≥-，又两条切线垂直，故121k k =-，所以上式等号成立，有22m n +=，且1mn =. 所以3232()()22f x x m n x mnx x x x =-++=-+. ………… 14 分。
湖南师大附中2012届高三第三次月考试卷-语文
湖南师大附中2012届高三月考试卷（三）语文试题本试卷共7道大题，21道小题（2道选做题任选1小题）。
时量150分钟，满分150分。
一、语言文字运用（12分，每小题3分）1．下列词语中加点的字，读音全都正确的一组是（）A．择．菜（zhài）阴霾．（mái）绮．丽（yǐ）斗转参．横（shēn）B．体．已（tī）福祉．（zhǐ）轻佻．（tiāo）佶．屈聱牙（jí）C．拘泥．（ní）联袂．（mâi）整饬．（chì）同仇敌忾．（kài）D．啁．啾（zhōu）空．白（kîng）侪．辈（chái）风雪载．途（zǎi）2．下列各句中，加点的词语使用不恰当．．．的一句是（）A．备受关注的2012年国家公务员招录考试已经开始报名。
据悉，昨天网上报名不很拥堵．．，抢着在第一天“出手”的考生并不是太多。
B．《帝国的惆怅》中，作者打通文中关节，勾兑．．世事人情，静观辅以动察，仰视继之俯瞰，使自己的见解，踩在宽广而坚实的地基上。
C．政府应改变中小企业融资难的局面，让它们有能力实现自身升级转型，避免出现中小企业“倒闭潮”，而伤及经济稳固．．增长的肌体。
D．峨眉山气吐如兰、秀甲天下，作为武林翘楚之一，峨眉风骨不逊于少林、武当，不少于影视作品演绎．．出了峨眉不可言说的神秘色彩。
3．下列各句中，没有．．语病的一项是（）A．大雪使铁路运输压力骤增，执勤民警启动恶劣天气应急预案，延长执勤时间和力度，维护旅客乘车秩序，保障了春运高峰平稳度过。
B．专家指出，中央对文化建设的高度重视，高层在文化理论创新与实践方面，正逐渐走向成熟，相关的文化建设能力正在不断地提升。
C．根据清华自主选拔“B计划”，专家组考察农村学生，将更关注他们的家庭情况、成长经历；看重他们在成长中克服困难、自强自立。
D．在农村，农民的地权问题依然被悬置着，而三十年的承包权是否原封不动地延续，权利能否得到保障，关系到整个国家经济的根基。
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望城六中2012届高三第三次月考（224班）生物时量：90分钟满分：90分第Ⅰ卷选择题（共40分）一、单项选择题（从下列各题四个备选答案中选出正确答案，并将其代号写在答题卡上。
每小题2分，共40分）1．下列关于细胞的物质组成、结构和功能的描述正确的是①氨基酸脱水缩合形成蛋白质时，产生的水分子的H全部来自于氨基②原核细胞中同时含DNA和RNA，但只有DNA是遗传物质③动物细胞的主要能源物质是糖类，植物细胞的主要能源物质是脂肪④溶酶体内含有多种水解酶，能分解衰老、损伤的细胞器⑤动物细胞中的中心体与有丝分裂有关⑥原核细胞与真核细胞的细胞膜的组成成分基本相同A．②④⑤⑥ B．①③⑤⑥ C．②③⑤⑥D．①③④⑤2．以下有关生物实验的选材、原理、步骤、结果等的描述，正确的是A．秋水仙素能抑制着丝点的分裂B．甲基绿是活性染色剂，使线粒体维持一定的活性C．观察动物的减数分裂过程可选用小鼠睾丸为材料D．用标志重捕法调查土壤蚯蚓的种群密度3．下图表示生物体内的某化学反应，下列有关该反应的叙述中错误的是A．需要解旋酶B．属于水解反应C．会有能量变化D．反应速度与温度有关4．在唾液腺细胞中参与合成并分泌唾液淀粉酶的细胞器有A．线粒体、中心体、高尔基体、内质网B．核糖体、高尔基体、内质网、叶绿体C．线粒体、核糖体、内质网、高尔基体D．中心体、内质网、核糖体、高尔基体5、在水池中沉水生活的丽藻，其细胞里的K＋浓度比池水里的K+浓度高1065倍。
据此判断下列说法正确的是A．随着池水中富营养化程度的提高，K＋进入丽藻加快B．池水中好氧细菌大量繁殖时，K＋难以进入丽藻C．池水中厌氧细菌大量繁殖时，K＋难以进入丽藻D．池水中鱼虾较多时，K＋难以进入丽藻6、下图中曲线a 、b 表示物质跨（穿）膜运输的两种方式，下列表述正确的是 A ．脂溶性小分子物质不能通过方式a 运输 B ．与方式a 有关的载体蛋白覆盖于细胞膜表面 C ．方式b 的最大转运速率与载体蛋白数量有关 D ．抑制细胞呼吸对方式a 和b 的转运速率均有影响7．右图为显微镜下某植物细胞在30%蔗糖溶液中的示意图。
下列叙述中错误的是A ．若将细胞置于清水中，A 仍保持不变B ．若该细胞处于40%蔗糖溶液中，B/A 值将变小C ．B/A 值能表示细胞失水的程度D ．A ．B 分别表示细胞和液泡的长度8、下图1表示温度对酶促反应速率的影响示意图，图2的实线表示在温度为a 的情况下生成物量与时间的关系图，则当温度增加一倍时生成物量与时间的关系是A ．曲线1B ．曲线2C ．曲线3D ．曲线49．如图表示细胞中某条生化反应链，图中E1～E5代表不同的酶，A ～E 代表不同的化合物。
据图判断下列叙述中正确的是A ．若E1催化的反应被抑制，则A 的消耗速度加快B ．若E5催化的反应被抑制，则B 积累到较高水平C ．若E3的催化速度比E4快，则D 的产量比E 多 D ．若E1的催化速度比E5快，则B 的产量比A 多 10、下列关于细胞呼吸与A TP 的叙述，正确的是A 、细胞各项生命活动所需要的A TP 全部来自有氧呼吸和无氧呼吸B 、人的骨骼肌细胞只能进行有氧呼吸而不能进行无氧呼吸C 、细胞内A TP 与ADP 相互转化的能量供应机制，是生物界的共性D 、探究酵母菌的细胞呼吸方式通常用相应的试剂检测有无二氧化碳产生下列组合不能达到相应目的的是（ ）A ．仅做Ⅰ组与Ⅱ组实验，可探究机械破损对该种子萌发的影响B ．仅做Ⅰ组与Ⅲ组实验，可探究种皮完整条件下赤霉素对该种子萌发的影响C ．仅做Ⅱ组与Ⅲ组实验，可探究赤霉素或机械破损对该种子萌发的影响D ．仅做Ⅱ组与Ⅳ组实验，可探究机械破损条件下赤霉素对该种子萌发的影响 12、下图表示光合作用与呼吸作用过程中物质变化的关系，下列说法正确的是AB ．具有细胞结构的生物都能进行的过程是3C ．1、3和4过程产生的[H]都能与氧结合产生水D ． 1、2、3、4、5过程均可发生于洋葱根细胞中13、如右图所示为细胞呼吸的实验装置，a 、b 两锥形瓶内各放一些湿棉花，瓶塞上各吊一熟石灰包，并插入温度计，分别有导管从瓶内通入水中。
a 瓶装入萌发的种子，b 瓶装入等量的煮熟种子。
48h 后，预期所能观察到的变化是A. a 瓶温度上升，与其连接的导管内水上升明显B.b 瓶温度上升，与其连接的导管内水上升明显C.a 瓶温度上升，与b 瓶连接的导管内水上升明显D.b 瓶温度上升，与a 瓶连接的导管内水上升明显14、某同学从杨树叶片中提取并分离得到4种色素样品，经测定得到下列吸收光谱图，其中属于叶绿素b 的是15、将生长状况相同的轮藻叶片分成4等份,在不同的温度下分别暗处理1h,再光照1h(光照强度相同),测其重量 变化,得到如下的数据。
以下说法错误的是A ．轮藻催化呼吸作用的酶的最适温度约为29℃B．第三组轮藻释放的氧气量最多C．四个组中的轮藻光合作用强度都大于呼吸作用强度D．第四组轮藻光合作用制造的有机物总量为2mg16、下图为植物在夏季晴天的一昼夜内CO2吸收量的变化情况，对此正确的判断是A．该植物进行光合作用的时间区段是bgB．植物在a和h时刻只进行呼吸作用，不进行光合作用C．影响bc段光合速率的外界因素只有光照强度D．ce段与fg段光合速率下降的原因相同17、下图是某种哺乳动物细胞分裂的一组图像，下列叙述错误的是A．有同源染色体的细胞有乙、丙、丁B．正发生基因重组的细胞有乙、丙、丁C．具有丁细胞的个体是雌性D．甲分裂的子细胞可能是精细胞或极体18、某生物的基因型为AaBb，已知Aa和Bb两对等位基因分别位于两对非同源染色体上，那么该生物的体细胞，在有丝分裂的后期，基因的走向是A．A与B走向一极，a与b走向另一极B．A与b走向一极，a与B走向另一极C．A与a走向一极，B与b走向另一极D．走向两极的均为A、a、B、b19、下图是某二倍体动物细胞减数分裂某一时期模式图。
下列相关叙述正确的是A. 该动物体细胞中染色体数目最多为4条B. 该细胞可能是次级精母细胞、次级卵母细胞或极体C. 该细胞中有2个染色体组，若1为Y染色体，则2为X染色体D. 若1上有一个A基因，则在3的相同位置可能是A基因或a基因20.在狗的精巢中，由A、T两种碱基参与构成的核苷酸共有X种；其DNA分子结构稳定性最低的时期在细胞周期的Y期；DNA复制出的2个DNA分子彼此分离发生在Z 期。
下列有关X,Y,Z的答案正确的是A.2、分裂间期、有丝分裂后期和减数第二次分裂后期B.5、分裂间期、有丝分裂后期和减数第一次分裂后期C.4、分裂前期、有丝分裂后期和减数第二次分裂后期D.3、分裂间期、有丝分裂后期和减数第二次分裂后期22（12分）、请据图回答：（1）图2中e点与d点相比较，e点时叶肉细胞中C3的含量；e点与f点相比较，e点时叶肉细胞中C3的含量（填“高”、“低”、“基本一致”）。
（2）对绿色植物的叶片来说，光照强度大于图1中b点时，图丙中存在的箭头有（填字母）。
（3）若图1表示某植物在最适温度25℃时光合速率与光照强度的关系，则将温度调到30℃，图1中b点将向移动。
（4）丁图表示在密闭装置中测得的CO2变化量，在15℃时该植物光合作用制造的有机物量是呼吸作用消耗的有机物量的倍。
若给该植物浇灌H218O，一段时间后，收集该植物周围的空气，发现其中有H218O，请用图解简要说明该过程。
23、（10分）东海原甲藻（简称甲藻）是我国东海引发赤潮的澡种之一，研究甲藻光合作用的生理特征可为认识赤潮发生机理提供重要信息。
（一）某研究小组探究pH对甲藻光合作用的影响，设计了以下实验：将生长旺盛的甲藻等量分成5组培养，各组甲藻pH分别设定为6．0、7．0、8．0、9．0、10．0，在黑暗中放置12h，然后在适宜光照等条件下培养，随即多次测定各组氧气释放量并计算净光合速率。
将实验结果绘制成右图。
（1）本实验除了通过测定氧气释放量，还可以通过测定吸收量来计算净光合速率。
（2）黑暗放置过程中，藻液pH会有所变化，因此在测定氧气释放量前，需多次将各组pH分别调到，这是控制实验的变量。
（3）若甲藻长时间处于pH10．0条件下，甲藻（能、不能）正常生长繁殖，请据图分析说明原因：。
（4）实验表明，甲藻光合作用适宜pH6．0—9．0．但海水在该pH条件下，一般不会发生赤潮，原因是发生赤潮除了与pＨ、温度、光照强度等因素有关外，最主要还与海水的有关。
（二）研究小组进一步探究了温度对甲藻光合作用的影响。
根据实验结果得出：甲藻生长繁殖的适宜温度为１５°Ｃ～３０°Ｃ，最适温度为２５°Ｃ左右，当温度为９°Ｃ和3３°Ｃ时，甲藻不能正常生长繁殖。
请根据这些信息在右图中画出净光合速率随温度变化的示意曲线。
24（12分）．细胞周期包括分裂间期（分为G1期、S期和G2期）和分裂期（M期）。
下图标注了甲动物（体细胞染色体数为12）肠上皮细胞的细胞周期各阶段的时长及DNA含量。
请回答下列问题：（1）若用含放射性同位素的胸苷（DNA复制的原料之一）短期培养甲动物肠上皮细胞后，处于S期的细胞都会被标记。
洗脱含放射性同位素的胸苷，换用无放射性的新鲜培养液培养，定期检测。
预计最快约________h后会检测到被标记的M期细胞。
（2）从被标记的M期细胞开始出现到其所占M期细胞总数的比例达到最大值时，所经历的时间为________期的时间，处于该期的一个细胞中染色体数目的变化情况是____________ ______。
（3）若向甲动物肠上皮细胞培养液中加入过量胸苷，处于S期的细胞立刻被抑制，而处于其他时期的细胞不受影响。
预计加入过量胸苷约________h后，细胞都将停留在S期。
（4）乙动物肠上皮细胞的细胞周期时长为24 h，M期时长为1.9 h。
若要在显微镜下观察细胞有丝分裂过程中染色体形态的变化，选用________（填“甲”或“乙”）动物肠上皮细胞更合适。
（5）在光学显微镜下观察，同处于分裂末期的动物肠上皮细胞与洋葱根尖细胞，形态上最主要的区别是________________________________________________________________________。
（6）请用坐标图画出甲动物肠上皮细胞一个细胞周期的染色体变化，用画出甲动物肠上皮细胞有丝分裂后期图25（8分）．右图实验装置用于研究温度对凝乳酶催化乳汁凝固的影响，先将酶和乳汁放入2个试管，然后将2个试管放入同一水浴(温度用T ℃表示)环境中持续15min ，再将酶和乳汁倒入同一试管中混合，保温并记录凝乳所需的时间。
通过实验记录在不同的温度下凝乳所需的时间，结果如右表：(1)为什么酶和乳汁混合之前在同一水浴环境中保温 15 min ，实验结果更准确？(2)若将酶和乳汁直接放入同一试管内混合并保温对实验结果有何影响？(3)比较并解释装置B 和D 的结果。