周口一高2014-2015学年度下学期高二年级期中考试题

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河南省周口市商水县第一高级中学2014-2015学年高二化学下学期期中试题

河南省周口市商水县第一高级中学2014-2015学年高二化学下学期期中试题
A.重结晶B.过滤C.蒸馏D.萃取
Ⅱ.用如图所示装置进行实验,将A逐滴加入B中:
(1)若B为Na2CO3粉末,C为C6H5ONa溶液,实验中观察到小试管内溶液由澄清变浑浊,则试管C中化学反应的离子方程式: 。
(2)若B是生石灰,观察到C溶液中先形成沉淀,然后沉淀溶解.当沉淀完全溶解,恰好变澄清时,关闭E然后往小试管中加入少量乙醛溶液,再往烧杯中加入热水,静置片刻,观察到试管壁出现光亮的银镜,则A是(填名称),C是(填化学 式),与乙醛的混合后,该溶液中反应的化学方程式:。
商水一高2014—2015学年度下学期期中考试
高二化学试题
可能用到的相对原子质量:C:12 H:1 O:16
第I卷(选择题共54分)
一选择题(每小题只有一个选项符合题意,每小题3分,共54分)
1.设NA为阿伏加德罗常数,下列有关说法正确的是]()
A.0.5 mol苯分子中含有C=C双键数为1.5 NA
A.原子半径的大小顺 序:r(Z)>r(W)>r(Y)>r(X)
B.元素Y的简单气态氢化物的热稳定性比W的弱
C.化合物Z2Y2与X2Y反应时,Z2Y2既是氧化剂又是还原剂
D.由X、Y、Z、W四种元素组成的化合物其水溶液可能显酸性
10.下图表示4—溴环己烯所发生的4个不同反应。其中,产物只含有一种官能团的反应是
4H++ClO2+5Fe2+===Cl-+5Fe3++2H2O
14H++Cr2O+6Fe2+===2Cr3++6Fe3++7H2O
试计算ClO2的“产率” (写出计算过程)。
22.(13分)化合物H是一种香料,存在于金橘中,可用如下路线合成:
已知:
1. R—CH=CH2 RCH2CH2OH(B2H6为乙硼烷);

周口市商水县第一高级中学2014-2015学年高二下学期期中考试英语试题含答案

周口市商水县第一高级中学2014-2015学年高二下学期期中考试英语试题含答案

商水一高2014-2015学年度下学期高二期中考试英语试题第二部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A,B,C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

AI was always told by my dad to do everything by myself since I was young. One day my father brought me with him to change his car system. When my father and the technicians opened up the car system and took the system apart, my eyes were glued to what was inside immediately, especially the microchips(芯片) -I was thrown by the amazing possibilities they represented. That was the moment when my passion for engineering was sparked. Since then I have loved to solve problems. Whether they are logical puzzles, or fixing appliances and furniture, I have always been an engineer at heart.As I progressed in high school, I was actually more exposed to the medical field. During my working at Princess Margaret Hospital, I realized this opened my passion for chemistry. In PMH getting medicine to patients sooner, I always found smiles on their faces. I knew my future career would include helping others, as was reflected in the 1,000 volunteer hours I had spent during my high school years. I wasn't sure what I had wanted to be, but I knew what I had wanted to do; I wanted to aid people by using my knowledge of the sciences, especially chemistry and physics.I also loved learning physics. Having a job, volunteering regularly, and being an active badminton player during the last year of high school made it a little tough but worthwhile. With the skills I learned about how to solve problems in physics, I will come out of high school not only with experiences that taught me to be hard-working, but also with teamwork, perseverance and a passion for problem-solving that will aid my future career as an engineer.To achieve my goal, I need to be equipped with the best knowledge and experience. Of course University of Toronto is an ideal place for me to acquire that knowledge and realize my dream.21. The author intends to tell us in the first paragraph________.A. his father was a famous engineerB. his father made a great success in lifeC. how his father was strict with him in studiesD. how his idea of future career was developed22. Which of the following can best describe the author's high school life?A. Decent and comfortable.B. Hard but fulfilling.C. Relaxing and colorful.D. Lonely but efficient.23. The author claims that he will surely be________in the future.A. a chemical engineerB. a physical engineerC. a competent engineerD. a scientific researcher24. We can infer from the passage that the author wrote the passage________.A. before graduating from high schoolB. in University of TorontoC. after he became famousD. before his job interviewBThe more you give to others, the more you reap yourself. When you share what you know, you will find that you grow according to the number of seeds that you sow. Such is the one secret to be happier in life.Spread cheer and teach others to do the same. People will gather around you to hear your wisdom, and feel your love. They will come to receive your sharing of what is inside you, all around you, the messages coming from above.Life is all about giving back. It is not about heartache or lack. Count your blessings every day. Put them in a stack that grows higher and higher, till it sets your spirit on fire with joy!Life is good when you stand up for what you believe. When you enrich the world with your truth, then you will receive all that is good and wonderful. All that is grand will come to you, too. All it takes is living from your heart to understand how the cycle of giving and receiving works. Ah yes! You will discover endless perks(额外津贴)!For many people today, especially women who are socialized to give and told they are selfish if they want to do something for themselves, the cycle of giving and receiving gets blocked. When a person gives and does not receive, then the energy flow gets cut off.Every person must receive, as well as give. Nature is intended for that balance in creating that particular flow. Now why would that giving and receiving be a natural law? Because all people need to open themselves to receiving. In receiving you tell yourself you are worthy and deserving of what life has to offer.25. Which word can replace the underlined word “reap” in Paragraph 1?A. gatherB. receiveC. devoteD. lose26. According to this passage, the author wants to tell us________.A. giving is more important than receivingB. receiving is more important than givingC. women need more receiving than givingD. giving and receiving is a natural law, and both are important27. According to the author, how can you be popular with the people all around you?A. You should give them whatever they want to get.B. You should dance to the music to amuse them.C. You should share whatever you have with them.D. You should spread cheer and teach others to do the same.CI can still recall the day my mom suggested, “Let's get you some new clothes.” You can imagine that to a little girl that may mean the world. To my surprise my mom allowed me to pick out three dresses, a pink one, a navy blue and, the best of all, a yellow and blue one. I loved that yellow and blue dress and to this day I love just thinking about it.I had a best friend whose family was even worse off financially than ours. Her name was Seema. I was excited to show her my three new beautiful dresses. She loved them all and was happy for me. She explained to me, with moistened eyes, that her father could only afford buying her clothes for her birthday. I felt her sad and instantly my mouth opened and I asked her something unexpected. I asked her to pick out one of the dresses. To my horror she picked up the best one-the yellow and blue dress. Please remember I was only 7 years old and my heart popped out my chest as I was aghast. She picked it up and held it up against her body and I saw how happily and beautifully she smiled. Her eyes lit up, no tears. I could not feel my hurt anymore.I told her it looked lovely against her.I always remember Seema's smile and how at that moment nothing mattered other than her smile. When you love and cherish your friendships, nothing matters ever! To this date we are still best friends.28. How did the writer feel when her mother wanted to buy her some new clothes?A. Disappointed.B. Sad.C. Excited.D. Calm.29. In the second paragraph, the underlined sentence “my heart popped out my chest as I wasaghast” suggests that________.A. the writer felt quite happy because her friend liked the dressB. the writer was shocked with her heart beat wildlyC. something was wrong with the writer's heartD. her body was not so beautiful as her friend's30.The underlined word “moistened” in the second paragraph can be best replaced by the word “_______”.A. wideB. wetC. beautifulD. big 31.What does the last paragraph imply?A. Seema's smile made the writer give her everything.B. Nothing is more important than friendship.C. If you want to have a friend, you should give away.D. Nothing was more important than Seema's smile.DAs the Career Planning Guide here on About, I receive a lot of email. A lot of it is well written. A lot of it isn't. Some messages go on and on and on, until finally the question is asked. Sometimes the length is necessary-other times the writer could be more brief.Some messages get right to the point...a little too quickly. The writer wastes no time asking for what he or she needs without bothering to be polite. Some of my younger readers use what I can only describe as some sort of shorthand, i.e.“Can u plz send in fo on careers?” This may be appropriate for communicating with your buddies(朋友)through instant messaging, but not for writing to someone you've never met.Tone is a difficult thing to explain. Remember when your parents would say“Don't use that tone of voice with me, young lady(or young man)?”Your feelings come across by the way you say something. It is easy to change your tone when you're speaking. When you are writing it's very hard to do it. Whenever I write an email, I read my message over several times before I hit send. I want to make sure I come across as respectful, friendly, and approachable. I don't want to sound curt(唐突无礼的)or demanding. Sometimes just rearranging your paragraphs will help.Email writers often use emoticons(情感符号)to convey a certain tone. If you write to someone frequently and you have a less formal relationship,then emoticons are okay. If, however, you're writing to a prospective(有望的)employer, stick to words only.32.Which of the following is TRUE according to the passage?A. Proper length is necessary for an email.B. An email should not be written in great length.C. An email should be as short as possible.D. Tone is not so important as length in writing an email.33.If you get right to the point too quickly, the reader of an email will feel________.A. you have no time to wasteB. you have something importantC. you are not polite enoughD. you are very familiar to him34.It's appropriate to use shorthand when you write a message to________.A. a close friendB. a prospective employerC. a strangerD. your present boss35.We learn from the last paragraph that________.A. emoticons are a great tool to convey a certain toneB. we should be careful with the use of emoticonsC. emoticons say much more than wordsD. emoticons can improve formal communication第二节(共5小题,每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填人空白处的最佳选项,并在答题卡上将该项涂黑。

周口市商水县第一高级中学2014-2015学年高二下学期期中考语文试题及答案

周口市商水县第一高级中学2014-2015学年高二下学期期中考语文试题及答案

商水一高2014---2015学年度下学期期中考试高二语文试题第I卷(阅读题)一、现代文阅读:共3题每题3分共9分阅读下面的文字,完成各题。

孔子对民生问题是重视的,但语焉不详。

孟子则把孔子的仁学落实到政治的措施上,要求社会统治者和管理者在解决民生基本问题上体现仁民爱物的思想感情,中国近代的民生主义即发源于此。

首先,要‚制民之产‛,使百姓丰衣足食。

仁政最核心的内容便是解决好民众的吃穿问题,使他们的物质生活有起码的保障。

其次,‚省刑罚,薄税敛‛,人民的负担要有一个限度,过此即有灾难,所以要省刑罚,必须薄税敛。

再次,救济社会上孤苦无援者。

最后,加强教育,德化民俗。

孟子认为要在富民的同时,‚谨庠序之教,申之以孝悌之义‛,使民去恶从善,形成礼义之风。

这样,社会才有秩序,人民才会有真正的安宁寿福。

在早期儒家代表人物中,没有哪一位比孟子更重视民众的社会作用和历史地位。

孔子讲过‚民无信不立‛的话。

孟子则大大前进了一步,他提出‚得天下有道:得其民,斯得天下矣;得其民有道:得其心,斯得民矣;得其心有道:所欲与之、聚之,所恶勿施,尔也‛,这就是民为邦本的思想。

孟子相信天命,但他把天命化为民意,认为这两者是一致的,这实际上是用民本思想重新解释了传统的天命论,大大提高了民众的地位。

他引《泰誓》的话‚天视自我民视,天听自我民听‛,百姓的感受和意志,体现了上天的精神,‚民之所欲,天必从之‛,君王只要能使百姓满意,就等于服从了天命。

孟子用民众的意志代表天命,从而限制君王的意志,‚君权天授‛变成了‚君权民授‛。

孟子提出了一个超越同时代人的口号:‚民为贵,社稷次之,君为轻‛。

这个口号一经提出,便使社会震动,响彻了两千多年,成为批判君主专制的有力武器。

这个‚民贵君轻‛的说法,在先秦诸子之中是极为罕见的,它肯定民众是国家的主体,对于君权至上的制度具有很大的冲击力。

按照孟子这一思想来设立政治体制,至少能发展出开明的君主立宪制。

这是孙中山提出民权主义的思想源头之一。

河南省周口市2014-2015学年高二下学期期末数学(文)试卷Word版含解析

河南省周口市2014-2015学年高二下学期期末数学(文)试卷Word版含解析

河南省周口市2014-2015学年高二(下)期末数学试卷(文科)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,只有一项是符合题目要求的)1.复数等于()A.8 B.﹣8 C.8i D.﹣8i2.曲线y=x2+3x在点A(2,10)处的切线的斜率k是()A.7 B.6 C.5 D.43.已知命题p:∃a0∈(0,+∞),a02﹣2a0﹣3>0,那么命题p的否定是()A.∃a0∈(0,+∞),a02﹣2a0﹣3≤0 B.∃a0∈(﹣∞,0),a02﹣2a0﹣3≤0C.∀a∈(0,+∞),a2﹣2a﹣3≤0 D.∀a∈(﹣∞,0),a2﹣2a﹣3≤04.执行如图所示的程序框图,输出的S值为()A.1 B.3 C.7 D.155.“a=2”是“直线y=﹣ax+2与y=垂直”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件6.过抛物线y2=12x的焦点作直线交抛物线于A(x1,y1),B(x2,y2)两点,如果x1+x2=6,那么|AB|=()A.16 B.12 C.10 D.87.函数f(x)=(x﹣3)e x的单调递增区间是()A.(﹣∞,2)B.(0,3)C.(1,4)D.(2,+∞)8.设S n是公差不为0的等差数列{a n}的前n项和,S3=a22,且S1,S2,S4成等比数列,则a10=()A.15 B.19 C.21 D.309.已知F2、F1是双曲线﹣=1(a>0,b>0)的上、下焦点,点F2关于渐近线的对称点恰好落在以F1为圆心,|OF1|为半径的圆上,则双曲线的离心率为()A.3 B.C.2 D.10.函f(x)=Asin(ωx+φ)(其中A>0,|φ|<)的图象如图所示,为了得到g(x)=sinωx 的图象,则只要将f(x)的图象()A.向右平个单位长度B.向右平个单位长度C.向左平个单位长度D.向左平个单位长度11.定义在R上的函数f(x)满足f(﹣x)=﹣f(x),f(x﹣2)=f(x+2)且x∈(﹣1,0)时,f(x)=2x+,则f(log220)=()A.1 B.C.﹣1 D.﹣12.定义在R上的函数f(x)满足f(1)=1,且对任意x∈R都有f′(x),则不等式f(x2)>的解集为()A.(1,2)B.(0,1)C.(1,+∞)D.(﹣1,1)二、填空题:(本大题共4小题,每小题5分,共20分,把正确的答案填在答题卡的横线上)13.调查了某地若干户家庭的年收入x(单位:万元)和年饮食支出y(单位:万元),调查显示年收入x与年饮食支出y具有线性相关关系,并由调查数据得到y对x的回归直线方程:=0.254+3.由回归直线方程可知,家庭年收入每增加1万元,年饮食支出平均增加万元.14.设变量x,y满足,若直线y=kx﹣2,(k>0)经过该可行域,则k的取值范围是.15.观察下列一组等式:①sin230°+cos260°+sin30°cos60°=,②sin215°+cos245°+sin15°cos45°=,③sin245°+cos275°+sin45°cos75°=,…,那么,类比推广上述结果,可以得到的一般结果是:.16.已知f(x)=x3﹣x2+2x+1,x1,x2是f(x)的两个极值点,且0<x1<1<x2<3,则实数a的取值范围为.三、解答题(本大题共5小题,共70分.解答应写出文字说明、证明过程或演算步骤)17.为了解春季昼夜温差大小与某种子发芽多少之间的关系,现在从4月份的30天中随机挑选了5天进行研究,且分别记录了每天昼夜温差与每天100颗种子浸泡后的发芽数,得到如下资料:日期4月1日4月7日4月15日4月21日4月30日温差x/℃10 11 13 12 8发芽数y/颗23 25 30 26 16(Ⅰ)从这5天中任选2天,记发芽的种子数分别为m,n,求事件“m,n均不小于25”的概率.(Ⅱ)从这5天中任选2天,若选取的是4月1日与4月30日的两组数据,请根据这5天中的另3天的数据,求出y关于x的线性回归方程=x+.(参考公式:=,=﹣)18.为了研究“教学方式”对教学质量的影响,某高中数学老师分别用两种不同的教学方式对入学数学平均分数和优秀率都相同的甲、乙两个高一新班进行教学(勤奋程度和自觉性都一样).如图所示茎叶图为甲、乙两班(每班均为20人)学生的数学期末考试成绩.(1)学校规定:成绩不低于75分的为优秀.请画出下面的2×2列联表.(2)判断有多大把握认为“成绩优秀与教学方式有关”.甲班乙班合计优秀不优秀合计下面临界值表仅供参考:P(x2≥k)0.15 0.10 0.05 0.025 0.010 0.005 0.001k 2.072 2.706 3.841 5.024 6.635 7.879 10.828参考公式:K2=.19.已知△ABC的内角A、B、C的对边分别为a、b、c,,且c=3.(1)求角C;(2)若向量与共线,求a、b的值.20.已知椭圆C:=1的左焦点F1的坐标为(﹣,0),F2是它的右焦点,点M是椭圆C上一点,△MF1F2的周长等于4+2.(1)求椭圆C的方程;(2)过定点P(0,2)作直线l与椭圆C交于不同的两点A,B,且OA⊥OB(其中O为坐标原点),求直线l的方程.21.已知f(x)=xlnx,g(x)=x3+ax2﹣x+2(Ⅰ)如果函数g(x)的单调递减区间为(﹣,1),求函数g(x)的解析式;(Ⅱ)对一切的x∈(0,+∞),2f(x)≤g′(x)+2恒成立,求实数a的取值范围.请考生从第22、23、24三题中任选一题作答,注意:只能做选定的题目,如果多做,则按所做的第一个题目计分,作答时请用2B铅笔在答题卡上将所选题后的方框涂黑.【选修4—1:几何证明选讲】22.已知△ABC中,AB=AC,D是△ABC外接圆上上的点(不与点A、C重合),延长BD至F.(1)求证:AD延长线DF平分∠CDE;(2)若∠BAC=30°,△ABC中BC边上的高为2+,求△ABC外接圆的面积.【选修4—4:极坐标系与参数方程】在直角坐标系xoy中,曲线C1的参数方程为(α为参数),以原点O为极点,x 轴正半轴为极轴,建立极坐标系,曲线C2的极坐标方程为ρsin(θ+)=4.(1)求曲线C1的普通方程与曲线C2的直角坐标方程;(2)设P为曲线C1上的动点,求点P到C2上点的距离的最小值,并求此时点P的坐标.【选修4—5:不等式选讲】已知函数f(x)=|x﹣3|(Ⅰ)若不等式f(x﹣1)+f(x)<a的解集为空集,求a的范围;(Ⅱ)若|a|<1,|b|<3,且a≠0,求证:f(ab)>|a|f().河南省周口市2014-2015学年高二(下)期末数学试卷(文科)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,只有一项是符合题目要求的)1.复数等于()A.8 B.﹣8 C.8i D.﹣8i考点:复数代数形式的混合运算.分析:先化简复数,然后进行复数幂的运算即可.解答:解:由,故选D.点评:本题考查复数代数形式的运算,复数幂的运算,是基础题.2.曲线y=x2+3x在点A(2,10)处的切线的斜率k是()A.7 B.6 C.5 D.4考点:利用导数研究曲线上某点切线方程.专题:导数的概念及应用.分析:根据求导公式求出y′,由导数的几何意义求出在点A(2,10)处的切线的斜率k.解答:解:由题意知,y=x2+3x,则y′=2x+3,∴在点A(2,10)处的切线的斜率k=4+3=7,故选:A.点评:本题考查求导公式和法则,以及导数的几何意义,属于基础题.3.已知命题p:∃a0∈(0,+∞),a02﹣2a0﹣3>0,那么命题p的否定是()A.∃a0∈(0,+∞),a02﹣2a0﹣3≤0 B.∃a0∈(﹣∞,0),a02﹣2a0﹣3≤0C.∀a∈(0,+∞),a2﹣2a﹣3≤0 D.∀a∈(﹣∞,0),a2﹣2a﹣3≤0考点:命题的否定.专题:简易逻辑.分析:根据特称命题的否定是全称命题,写出命题p的否定命题¬p即可.解答:解:根据特称命题的否定是全称命题,得;命题p:∃a0∈(0,+∞),a02﹣2a0﹣3>0,那么命题p的否定是:∀a∈(0,+∞),a2﹣2a﹣3≤0.故选:C.点评:本题考查了特称命题与全称命题的应用问题,是基础题目.4.执行如图所示的程序框图,输出的S值为()A.1 B.3 C.7 D.15考点:程序框图.专题:算法和程序框图.分析:算法的功能是求S=1+21+22+…+2k的值,根据条件确定跳出循环的k值,计算输出的S 值.解答:解:由程序框图知:算法的功能是求S=1+21+22+…+2k的值,∵跳出循环的k值为3,∴输出S=1+2+4=7.故选:C.点评:本题考查了当型循环结构的程序框图,根据框图的流程判断算法的功能是解题的关键.5.“a=2”是“直线y=﹣ax+2与y=垂直”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件考点:必要条件、充分条件与充要条件的判断.专题:直线与圆.分析:当a=2时两直线的斜率都存在,故只要看是否满足k1•k2=﹣1即可.利用直线的垂直求出a的值,然后判断充要条件即可.解答:解:当a=2时直线y=﹣ax+2的斜率是﹣2,直线y=的斜率是2,满足k1•k2=﹣1∴a=2时直线y=﹣ax+2与y=垂直,直线y=﹣ax+2与y=垂直,则﹣a•a=﹣1,解得a=±2,“a=2”是“直线y=﹣ax+2与y=垂直”的充分不必要条件.故选A.点评:本题通过逻辑来考查两直线垂直的判定,必要条件、充分条件与充要条件的判断,考查基本知识的应用.6.过抛物线y2=12x的焦点作直线交抛物线于A(x1,y1),B(x2,y2)两点,如果x1+x2=6,那么|AB|=()A.16 B.12 C.10 D.8考点:抛物线的简单性质.专题:计算题;圆锥曲线的定义、性质与方程.分析:设过抛物线y2=12x的焦点的直线方程为x=my+3,代入y2=12x,利用韦达定理,求出m,即可求出|AB|.解答:解:设过抛物线y2=12x的焦点的直线方程为x=my+3,代入y2=12x,可得y2﹣12my﹣36=0,∴y1+y2=12m,y1y2=﹣36,∴x1+x2=12m2+6=3,∴m=0,∴x=3,∴|AB|=2×6=12.故选:B.点评:本题考查弦长的计算,考查直线与抛物线的位置关系,考查学生的计算能力,比较基础.7.函数f(x)=(x﹣3)e x的单调递增区间是()A.(﹣∞,2)B.(0,3)C.(1,4)D.(2,+∞)考点:利用导数研究函数的单调性.专题:函数的性质及应用.分析:若求解函数f(x)的单调递增区间,利用导数研究函数的单调性的性质,对f(x)求导,令f′(x)>0,解出x的取值区间,要考虑f(x)的定义域.解答:解:f′(x)=(x﹣3)′e x+(x﹣3)(e x)′=(x﹣2)e x,求f(x)的单调递增区间,令f′(x)>0,解得x>2,故选D.点评:本题主要考查利用导数研究函数的单调性的这一性质,值得注意的是,要在定义域内求解单调区间.8.设S n是公差不为0的等差数列{a n}的前n项和,S3=a22,且S1,S2,S4成等比数列,则a10=()A.15 B.19 C.21 D.30考点:等差数列的性质.专题:等差数列与等比数列.分析:由S3=a22,结合等差数列的求和公式可求a2,然后由,结合等差数列的求和公式进而可求公差d,结合通项公式进行求解即可.解答:解:设数列的公差为d,(d≠0)∵S3=a22,得:3,∴a2=0或a2=3;∵S 1,S 2,S 4成等比数列, ∴,∴,若a 2=0,则可得d 2=﹣2d 2即d=0不符合题意,若a 2=3,则可得(6﹣d )2=(3﹣d )(12+2d ), 解可得d=0(舍)或d=2, ∴a 10=a 2+8d=3+8×2=3+16=19, 故选:B . 点评: 本题主要考查了等差数列的通项公式及求和公式的应用,等比数列的性质的简单应用,利用方程组思想是解决本题的关键.9.已知F 2、F 1是双曲线﹣=1(a >0,b >0)的上、下焦点,点F 2关于渐近线的对称点恰好落在以F 1为圆心,|OF 1|为半径的圆上,则双曲线的离心率为( )A . 3B .C . 2D .考点: 双曲线的简单性质. 专题: 计算题;直线与圆;圆锥曲线的定义、性质与方程. 分析: 首先求出F 2到渐近线的距离,利用F 2关于渐近线的对称点恰落在以F 1为圆心,|OF 1|为半径的圆上,可得直角三角形MF 1F 2,运用勾股定理,即可求出双曲线的离心率. 解答: 解:由题意,F 1(0,﹣c ),F 2(0,c ),一条渐近线方程为y=x ,则F 2到渐近线的距离为=b .设F 2关于渐近线的对称点为M ,F 2M 与渐近线交于A , ∴|MF 2|=2b ,A 为F 2M 的中点,又0是F 1F 2的中点,∴OA ∥F 1M ,∴∠F 1MF 2为直角, ∴△MF 1F 2为直角三角形,∴由勾股定理得4c 2=c 2+4b 2∴3c 2=4(c 2﹣a 2),∴c 2=4a 2, ∴c=2a ,∴e=2. 故选C . 点评: 本题主要考查了双曲线的几何性质以及有关离心率和渐近线,考查勾股定理的运用,考查学生的计算能力,属于中档题.10.函f (x )=Asin (ωx+φ)(其中A >0,|φ|<)的图象如图所示,为了得到g (x )=sin ωx的图象,则只要将f (x )的图象( )A.向右平个单位长度B.向右平个单位长度C.向左平个单位长度D.向左平个单位长度考点:由y=Asin(ωx+φ)的部分图象确定其解析式.专题:计算题;三角函数的图像与性质.分析:由函数f(x)的最值求出A=1,求出函数的周期并利用周期公式算出ω=2.再由当x=时函数有最小值,建立关于φ的等式解出φ=,从而得到f(x)=sin(2x+).最后根据函数图象平移的公式加以计算,可得答案.解答:解:设f(x)的周期为T,根据函数的图象,可得=﹣=,得T=π,由=π,可得ω=2.∵A>0,函数的最小值为﹣1,∴A=1.函数表达式为f(x)=sin(2x+φ),又∵当x=时,函数有最小值,∴2+φ=﹣(k∈Z),解之得φ=﹣(k∈Z),∵|φ|<,∴取k=1,得φ=,因此,函数的表达式为f(x)=sin(2x+)=sin[2(x+)],由此可得函数g(x)=sin2x=f(x﹣),∴将函数f(x)的图象右移个单位,即可得到g(x)=sin2x的图象.故选:A点评:本题给出y=Asin(ωx+φ)的部分图象,确定其解析式并讨论函数图象的平移.着重考查了三角函数的图象与性质、函数图象平移公式等知识,属于中档题.11.定义在R上的函数f(x)满足f(﹣x)=﹣f(x),f(x﹣2)=f(x+2)且x∈(﹣1,0)时,f(x)=2x+,则f(log220)=()A.1 B.C.﹣1 D.﹣考点:函数的周期性;奇偶函数图象的对称性.专题:计算题.分析:根据对数函数的单调性,我们易判断出log220∈(4,5),结合已知中f(﹣x)=﹣f(x),f(x﹣2)=f(x+2)且x∈(﹣1,0)时,利用函数的周期性与奇偶性,即可得到f(log220)的值.解答:解:∵定义在R上的函数f(x)满足f(﹣x)=﹣f(x),∴函数f(x)为奇函数又∵f(x﹣2)=f(x+2)∴函数f(x)为周期为4是周期函数又∵log232>log220>log216∴4<log220<5∴f(log220)=f(log220﹣4)=f(log2)=﹣f(﹣log2)=﹣f(log2)又∵x∈(﹣1,0)时,f(x)=2x+,∴f(log2)=1故f(log220)=﹣1故选C点评:本题考查的知识点是函数的周期性和奇偶函数图象的对称性,其中根据已知中f(﹣x)=﹣f(x),f(x﹣2)=f(x+2)判断函数的奇偶性,并求出函数的周期是解答的关键.12.定义在R上的函数f(x)满足f(1)=1,且对任意x∈R都有f′(x),则不等式f(x2)>的解集为()A.(1,2)B.(0,1)C.(1,+∞)D.(﹣1,1)考点:导数的运算;其他不等式的解法.专题:计算题.分析:所求解的不等式是抽象不等式,是与函数有关的不等式,函数的单调性和不等关系最密切.由f′(x),构造单调递减函数h(x)=f(x)﹣,利用其单减性求解.解答:解:∵f′(x),∴f′(x)﹣<0,设h(x)=f(x)﹣,则h′(x)=f′(x)﹣<0,∴h(x)是R上的减函数,且h(1)=f(1)﹣=1﹣=.不等式f(x2)>,即为f(x2)x2>,即h(x2)>h(1),得x2<1,解得﹣1<x<1,∴原不等式的解集为(﹣1,1).故选:D.点评:本题考查抽象不等式求解,关键是利用函数的单调性,根据已知条件和所要解的不等式,找到合适的函数作载体是关键.二、填空题:(本大题共4小题,每小题5分,共20分,把正确的答案填在答题卡的横线上)13.调查了某地若干户家庭的年收入x(单位:万元)和年饮食支出y(单位:万元),调查显示年收入x与年饮食支出y具有线性相关关系,并由调查数据得到y对x的回归直线方程:=0.254+3.由回归直线方程可知,家庭年收入每增加1万元,年饮食支出平均增加0.254万元.考点:线性回归方程.专题:概率与统计.分析:写出当自变量增加1时的预报值,用这个预报值去减去自变量x对应的值,得到家庭年收入每增加1万元,年饮食支出平均增加的数字,得到结果.解答:解:∵对x的回归直线方程=0.254+3.∴当家庭年收入增加1万元时,=0.254(x+1)+3,∵[0.254(x+1)+3]﹣[0.254x+3]=0.254.故年饮食支出平均增加0.254万元.故答案为:0.254.点评:本题考查线性回归方程,考查线性回归方程的应用,用来预报当自变量取某一个数值时对应的y的值,注意本题所说的是平均增,注意叙述正确.14.设变量x,y满足,若直线y=kx﹣2,(k>0)经过该可行域,则k的取值范围是(﹣∞,﹣1]∪[).考点:简单线性规划.专题:不等式的解法及应用.分析:作出不等式组对应的平面区域,利用k的几何意义即可得到k的最值.解答:解:画出的可行域如图,k为直线y=kx﹣2的斜率,直线过定点P(0,﹣2),并且直线过可行域的A,B,两个临界点,,解得A(2,﹣1),解得B(﹣1,﹣1)∴k≥k AP==,∴k≤k BP==﹣1,∴k的取值范围是(﹣∞,﹣1]∪[)故答案为:(﹣∞,﹣1]∪[).点评:本题主要考查线性规划的应用以及直线斜率的计算,利用z的几何意义,利用数形结合是解决本题的关键.15.观察下列一组等式:①sin230°+cos260°+sin30°cos60°=,②sin215°+cos245°+sin15°cos45°=,③sin245°+cos275°+sin45°cos75°=,…,那么,类比推广上述结果,可以得到的一般结果是:sin2(30°+x)+sin(30°+x)cos(30°﹣x)+cos2(30°﹣x)=.考点:类比推理.专题:压轴题;规律型.分析:观察所给的等式,等号左边是sin230°+cos260°+sin30°cos60°,3sin215°+cos245°+sin15°cos45°…规律应该是sin2x+sinxcos(30°+x)+cos2(30°+x),右边的式子:,写出结果.解答:解:观察下列一组等式:①sin230°+cos260°+sin30°cos60°=,②sin215°+cos245°+sin15°cos45°=,③sin245°+cos275°+sin45°cos75°=,…,照此规律,可以得到的一般结果应该是sin2x+sinx)cos(30°+x)+cos2(30°+x),右边的式子:,∴sin2x+sinxcos(30°+x)+cos2(30°+x)=.证明:sin2x+sinx()+()2=sin2x+﹣+﹣+==.故答案为:sin2x+sinxcos(30°+x)+cos2(30°+x)=.点评:本题考查类比推理,考查对于所给的式子的理解,从所给式子出发,通过观察、类比、猜想出一般规律,不需要证明结论,该题着重考查了类比的能力.16.已知f(x)=x3﹣x2+2x+1,x1,x2是f(x)的两个极值点,且0<x1<1<x2<3,则实数a的取值范围为(3,).考点:利用导数研究函数的极值.专题:导数的概念及应用.分析:先求出函数f(x)的导数,结合二次函数的性质,得到不等式组,解出即可.解答:解:f′(x)=x2﹣ax+2,∴x1,x2是f′(x)=0的两个根,由0<x1<1<x2<3,结合二次函数的性质得:,解得:3<a<,故答案为:(3,).点评:本题考查了导数的应用,考查二次函数的性质,是一道中档题.三、解答题(本大题共5小题,共70分.解答应写出文字说明、证明过程或演算步骤)17.为了解春季昼夜温差大小与某种子发芽多少之间的关系,现在从4月份的30天中随机挑选了5天进行研究,且分别记录了每天昼夜温差与每天100颗种子浸泡后的发芽数,得到如下资料:日期4月1日4月7日4月15日4月21日4月30日温差x/℃10 11 13 12 8发芽数y/颗23 25 30 26 16(Ⅰ)从这5天中任选2天,记发芽的种子数分别为m,n,求事件“m,n均不小于25”的概率.(Ⅱ)从这5天中任选2天,若选取的是4月1日与4月30日的两组数据,请根据这5天中的另3天的数据,求出y关于x的线性回归方程=x+.(参考公式:=,=﹣)考点:线性回归方程.专题:概率与统计.分析:(Ⅰ)用数组(m,n)表示选出2天的发芽情况,用列举法可得m,n的所有取值情况,分析可得m,n均不小于25的情况数目,由古典概型公式,计算可得答案;(Ⅱ)根据所给的数据,先做出x,y的平均数,即做出本组数据的样本中心点,根据最小二乘法求出线性回归方程的系数,写出线性回归方程.解答:解:(Ⅰ)用数组(m,n)表示选出2天的发芽情况,m,n的所有取值情况有:(23,25),(23,30),(23,26),(23,16),(25,30),(25,26),(25,16),(30,26),(30,16),(30,26),共有10个设“m,n均不小于25”为事件A,则包含的基本事件有(25,30),(25,26),(30,26)所以P(A)=,故m,n均不小于25的概率为;(Ⅱ)由数据得=12,=27,3•=972,x i y i=977,x i2=434,32=432.由公式,得==,=27﹣×12=﹣3.所以y关于x的线性回归方程为=x﹣3.点评:本题考查回归直线方程的计算与应用,涉及古典概型的计算,是基础题,在计算线性回归方程时计算量较大,注意正确计算.18.为了研究“教学方式”对教学质量的影响,某高中数学老师分别用两种不同的教学方式对入学数学平均分数和优秀率都相同的甲、乙两个高一新班进行教学(勤奋程度和自觉性都一样).如图所示茎叶图为甲、乙两班(每班均为20人)学生的数学期末考试成绩.(1)学校规定:成绩不低于75分的为优秀.请画出下面的2×2列联表.(2)判断有多大把握认为“成绩优秀与教学方式有关”.甲班乙班合计优秀不优秀合计下面临界值表仅供参考:P(x2≥k)0.15 0.10 0.05 0.025 0.010 0.005 0.001k 2.072 2.706 3.841 5.024 6.635 7.879 10.828参考公式:K2=.考点:独立性检验的应用.专题:应用题;概率与统计.分析:(1)由所给数据,结合40,即可补全2×2列联表;(2)根据所给的列联表得到求观测值所用的数据,把数据代入观测值公式中,做出观测值,同所给的临界值表进行比较,即可得出结论.解答:解:(1)甲班乙班合计优秀 6 14 20不优秀14 6 20合计20 20 40…(6分)(2)K2==6.4>5.024 …(10分)因此,我们有97.5%的把握认为成绩优秀与教学方式有关.…(12分)点评:本题考查了由茎叶图求分类变量的列联表,及根据列联表计算相关指数K2的观测值,考查概率知识的运用,属于中档题.19.已知△ABC的内角A、B、C的对边分别为a、b、c,,且c=3.(1)求角C;(2)若向量与共线,求a、b的值.考点:余弦定理;三角函数的恒等变换及化简求值;正弦定理.专题:计算题.分析:(1)利用二倍角公式及辅助角公式对已知化简可得sin(2C﹣30°)=1,结合C的范围可求C(2)由(1)C,可得A+B,结合向量共线的坐标表示可得sinB﹣2sinA=0,利用两角差的正弦公式化简可求解答:解:(1)∵,∴∴sin(2C﹣30°)=1∵0°<C<180°∴C=60°(2)由(1)可得A+B=120°∵与共线,∴sinB﹣2sinA=0∴sin(120°﹣A)=2sinA整理可得,即tanA=∴A=30°,B=90°∵c=3.∴a=,b=2点评:本题主要考查了二倍角公式、辅助角公式及两角和的正弦公式、锐角三角函数的综合应用20.已知椭圆C:=1的左焦点F1的坐标为(﹣,0),F2是它的右焦点,点M是椭圆C上一点,△MF1F2的周长等于4+2.(1)求椭圆C的方程;(2)过定点P(0,2)作直线l与椭圆C交于不同的两点A,B,且OA⊥OB(其中O为坐标原点),求直线l的方程.考点:直线与圆锥曲线的综合问题.专题:圆锥曲线中的最值与范围问题.分析:(1)由已知得,由此能求出椭圆C的方程.(2)当直线l的斜率不存在时,不满足题意.当直线l的斜率存在时,设直线l的方程为y=kx ﹣2,联立,得(1+4k2)x2﹣16kx+12=0,由此利用根的判别式、根与系数关系、向量知识,结合已知条件能求出直线l的方程.解答:解:(1)∵椭圆C:=1的左焦点F1的坐标为(﹣,0),F2是它的右焦点,点M是椭圆C上一点,△MF1F2的周长等于4+2,∴,解得a=2,b=1,∴椭圆C的方程为.(2)当直线l的斜率不存在时,不满足题意.当直线l的斜率存在时,设直线l的方程为y=kx﹣2,A(x1,y1),B(x2,y2),联立,得(1+4k2)x2﹣16kx+12=0,△=(﹣16k)2﹣48(1+4k2)>0,由根与系数关系得x1+x2=,x1•x2=,∵y1=kx1﹣2,y2=kx2﹣2,∴y1y2=k2x1•x2﹣2k(x1+x2)+4.∵OA⊥OB,∴x1x2+y1y2=0,∴(1+k2)x1x2﹣2k(x1+x2)+4=0,∴﹣+4=0,解得k=±2,∴直线l的方程是y=2x﹣2或y=﹣2x﹣2.点评:本题考查椭圆方程和直线方程的求法,是中档题,解题时要认真审题,注意根的判别式、根与系数关系、向量知识的合理运用.21.已知f(x)=xlnx,g(x)=x3+ax2﹣x+2(Ⅰ)如果函数g(x)的单调递减区间为(﹣,1),求函数g(x)的解析式;(Ⅱ)对一切的x∈(0,+∞),2f(x)≤g′(x)+2恒成立,求实数a的取值范围.考点:利用导数研究函数的单调性;导数的运算.专题:导数的综合应用.分析:(Ⅰ)根据函数的单调区间可知﹣,1是导函数所对应方程的两个根,从而可求出a的值;(Ⅱ)2xlnx≤3x2+2ax﹣1+2在x∈(0,+∞)上恒成立将a分离可得a≥lnx﹣,设h(x)=lnx﹣,利用导数研究h(x)的最大值,可求出a的取值范围.解答:解:(Ⅰ)g′(x)=3x2+2ax﹣1由题意3x2+2ax﹣1>0的解集是(﹣,1),即3x2+2ax﹣1=0的两根分别是﹣,1将x=1或﹣代入方程3x2+2ax﹣1=0得a=﹣1,∴g(x)=x3﹣x2﹣x+2(Ⅱ)由题意知,2xlnx≤3x2+2ax﹣1+2在x∈(0,+∞)上恒成立即a≥lnx﹣,设h(x)=lnx﹣,则令h′(x)=0,得x=1,x=﹣(舍),当0<x<1时,h′(x)>0;当x>1时,h′(x)<0∴当x=1时,h(x)取得最大值,h(x)max=﹣2,.∴a≥﹣2,即a的取值范围是[﹣2,+∞).点评:本题主要考查了利用导数研究函数的单调性以及利用导数研究函数在某点切线方程,同时考查了转化的思想和计算能力,属于难题.请考生从第22、23、24三题中任选一题作答,注意:只能做选定的题目,如果多做,则按所做的第一个题目计分,作答时请用2B铅笔在答题卡上将所选题后的方框涂黑.【选修4—1:几何证明选讲】22.已知△ABC中,AB=AC,D是△ABC外接圆上上的点(不与点A、C重合),延长BD至F.(1)求证:AD延长线DF平分∠CDE;(2)若∠BAC=30°,△ABC中BC边上的高为2+,求△ABC外接圆的面积.考点:与圆有关的比例线段.专题:选作题;推理和证明.分析:(1)根据A,B,C,D四点共圆,可得∠ABC=∠CDF,AB=AC可得∠ABC=∠ACB,从而得解.(2)设O为外接圆圆心,连接AO并延长交BC于H,则AH⊥BC.连接OC,设圆半径为r,则r+r=2+,求出r,即可求△ABC外接圆的面积.解答:(1)证明:如图,∵A,B,C,D四点共圆,∴∠CDF=∠ABC.又AB=AC,∴∠ABC=∠ACB,且∠ADB=∠ACB,∴∠ADB=∠CDF,又由对顶角相等得∠EDF=∠ADB,故∠EDF=∠CDF,即AD的延长线DF平分∠CDE.…(5分)(2)解:设O为外接圆圆心,连接AO并延长交BC于H,则AH⊥BC.连接OC,由题意∠OAC=∠OCA=15°,∠ACB=75°,∴∠OCH=60°,设圆半径为r,则r+r=2+,得r=2,外接圆的面积为4π.…(10分)点评:本题以圆为载体,考查圆的内接四边形的性质,考查等腰三角形的性质,考查外接圆的面积,属于中档题.【选修4—4:极坐标系与参数方程】在直角坐标系xoy中,曲线C1的参数方程为(α为参数),以原点O为极点,x轴正半轴为极轴,建立极坐标系,曲线C2的极坐标方程为ρsin(θ+)=4.(1)求曲线C1的普通方程与曲线C2的直角坐标方程;(2)设P为曲线C1上的动点,求点P到C2上点的距离的最小值,并求此时点P的坐标.考点:简单曲线的极坐标方程.专题:坐标系和参数方程.分析:(1)由条件利用同角三角函数的基本关系把参数方程化为直角坐标方程,利用直角坐标和极坐标的互化公式x=ρcosθ、y=ρsinθ,把极坐标方程化为直角坐标方程.(2)求得椭圆上的点到直线x+y﹣8=0的距离为,可得d的最小值,以及此时的α的值,从而求得点P的坐标.解答:解:(1)由曲线C1:,可得,两式两边平方相加得:,即曲线C1的普通方程为:.由曲线C2:得:,即ρsinθ+ρcosθ=8,所以x+y﹣8=0,即曲线C2的直角坐标方程为:x+y﹣8=0.(2)由(1)知椭圆C1与直线C2无公共点,椭圆上的点到直线x+y ﹣8=0的距离为,∴当时,d的最小值为,此时点P的坐标为.点评:本题主要考查把参数方程、极坐标方程化为直角坐标方程的方法,点到直线的距离公式的应用,正弦函数的值域,属于基础题.【选修4—5:不等式选讲】已知函数f(x)=|x﹣3|(Ⅰ)若不等式f(x﹣1)+f(x)<a的解集为空集,求a的范围;(Ⅱ)若|a|<1,|b|<3,且a≠0,求证:f(ab)>|a|f().考点:绝对值不等式的解法.专题:不等式的解法及应用.分析:(Ⅰ)由题意可得|x﹣4|+|x﹣3|<a的解集为空集,而|x﹣4|+|x﹣3|≥1,由此可得a的范围.(Ⅱ)要证的不等式等价于(ab﹣3)2>(b﹣3a)2,再根据(ab﹣3)2﹣(b﹣3a)2=(a2﹣1)(b2﹣9)>0,从而证得f(ab)>|a|f()成立.解答:解:(Ⅰ)函数f(x)=|x﹣3|,不等式f(x﹣1)+f(x)<a,即|x﹣4|+|x﹣3|<a.再根据f(x﹣1)+f(x)<a的解集为空集,可得|x﹣4|+|x﹣3|<a的解集为空集.而|x﹣4|+|x﹣3|≥|(x﹣4)﹣(x﹣3)|=1,∴a≤1.(Ⅱ)∵|a|<1,|b|<3,且a≠0,∴f(ab)>|a|f(),等价于|ab﹣3|>|a|•|﹣3|,等价于|ab﹣3|﹣|b﹣3a|,等价于(ab﹣3)2>(b﹣3a)2.再根据(ab﹣3)2﹣(b﹣3a)2=a2b2﹣9a2﹣b2+9=(a2﹣1)(b2﹣9)>0,可得f(ab)>|a|f()成立.点评:本题主要考查绝对值不等式的解法,体现了等价转化的数学思想,属于中档题.。

河南周口市商水县第一高级中学高二下学期期中考试数学文试题 word含答案

河南周口市商水县第一高级中学高二下学期期中考试数学文试题 word含答案

商水一高2015-2016学年下学期期中考试高一数学(文科)试题命题人:赵宝峰一、选择题(每题5分,共60分)1.曲线y=a x在x=0处的切线方程是xln 2+y-1=0,则a=( )A.12B.2 C.ln 2 D.ln122.类比平面内“垂直于同一条直线的两条直线互相平行”的性质,可推出空间下列结论:①垂直于同一条直线的两条直线互相平行②垂直于同一个平面的两条直线互相平行③垂直于同一条直线的两个平面互相平行④垂直于同一个平面的两个平面互相平行则正确的结论是()A.①②B.②③C.③④D.①④3.“所有9的倍数都是3的倍数, 某奇数是9的倍数, 故该奇数是3的倍数.”以上推理是 ( )A.小前提错B.结论错C.正确的D.大前提错4.复数z1=a2-2-3ai,z2=a+(a2+2)i,若z1+z2是纯虚数,那么实数a的值为( )A.1B.2C.-2D.1或-25.在△ABC中,若acosB=bcosA,则△ABC的形状一定是( )A.锐角三角形B.钝角三角形C.直角三角形D.等腰三角形6.观察(x2)′=2x,(x4)′=4x3,(cosx)′=-sinx,由归纳推理可得:若定义在R上的函数f(x)满足f(-x)=f(x),记g(x)为f(x)的导函数,则g(-x)=( )A.f(x)B.-f(x)C.g(x)D.-g(x)7.用反证法证明命题:“若整系数一元二次方程ax2+bx+c=0(a≠0)有有理根,那么a,b,c中至少有一个是偶数”时,下列假设正确的是( )A.假设a,b,c都是偶数B.假设a、b,c都不是偶数C.假设a,b,c至多有一个偶数D.假设a,b,c至多有两个偶数8、某校高二年级文科共303名学生,为了调查情况,学校决定随机抽取50人参加抽测,采取先简单随机抽样去掉3人然后系统抽样抽取出50人的方式进行。

则在此抽样方式下,某学生甲被抽中的概率为()A.16B.1100C.175D.503039. 设函数()()xf x F x e =是定义在R 上的函数,其中()f x 的导函数为'()f x ,且满足 '()()f x f x <对于任意x R ∈恒成立,则( )22012.(2)(0),(2012)(0)A f e f f e f >> 22012.(2)(0),(2012)(0)B f e f f e f >< 22012.(2)(0),(2012)(0)C f e f f e f << 22012.(2)(0),(2012)(0)D f e f f e f <>10.某工厂生产某种产品的产量x(吨)与相应的生产能耗y(吨标准煤)有如下几组样本数据:线的斜率为0.7,则这组样本数据的回归直线方程是 ( ) A.y ^=0.7x +2.05 B.y ^=0.7x +0.35C.y ^=0.7x +1D.y ^=0.7x +0.4511.不等式组⎪⎪⎩⎪⎪⎨⎧ay x 02y 2x 2y x 201y x ≤-≥+-≤-≥-+表示的平面区域是一个三角形,则a 的取值范围是( )A.a=1B.﹣1<a ≤0C.0≤a ≤1 D ﹣1<a ≤0或a ≥112. 独立性检验中,假设H 0:变量X 与变量Y 没有关系,则在H 0成立的情况下,P(K 2≥6.635)≈0.010表示的意义是 ( )A .变量X 与变量Y 有关系的概率为1%B .变量X 与变量Y 有关系的概率为99.9%C .变量X 与变量Y 没有关系的概率为99%D .变量X 与变量Y 有关系的概率为99% 二、填空(每小题5分,共20分) 13. 定义运算a b ad bc c d=-,若复数23ix i-=+ , 431i xi y i x i-=++,则y=14.对任意非零实数a b 、,若a b ⊗的运算原理如图 所示,则()221log 82-⎛⎫⊗= ⎪⎝⎭_____. (第14题图)15.已知x 与y 之间的一组数据:则y 与x 的线性回归方程为y a bx =+必过点 16.已知m ,n ,s ,t ∈+R ,m ﹢n =2,9t n s m =+,其中m ,n 是常数。

河南省周口市商水县第一高级中学2014-2015学年高二下学期期中考试地理试题Word版含答案

河南省周口市商水县第一高级中学2014-2015学年高二下学期期中考试地理试题Word版含答案

商水一高2014-2015学年度高二下学期期中考试高二地理试题一、单选题:共30题每题2分共60分1.“骑楼”是楼房前座跨入人行道悬空而建的,二楼向街心延伸,并使马路边房屋相互连接,形成自由步行的长廊。

这是岭南民居的一个特色。

骑楼建筑反映了岭南地区A.地形多样,地表起伏不平B.高温多雨的气候C.降雨强度大D.洪涝、台风等灾害频繁2.适宜于在我国西北干旱地区种植的是:A.杨树B.胡杨C.落叶松D.红树林3.下图为某岛略图,从图中提供的信息可判断A.地势中间高四周低,地形以高原为主B.河流流程短,落差小C.图中A地每年有一次的阳光直射机会D.全年晴好天气西南部多于东北部4.读中国能源消费结构图和世界能源消费结构图(2002年),我国能源消费结构以煤炭为主的原因是中国能源消费结构图世界能源消费结构图A.燃烧效率高B.干净、清洁C.储量大,开采成本低D.比较价格低读“我国沿30ºN几种地理参数随经度的变化趋势示意图”回答问题。

5.图中三条曲线代表的地理事物分别是A.①年太阳辐射量②7月均温③地势B.①地势②7月均温③年太阳辐射量C.①7月均温②为年太阳辐射量③地势D.①年太阳辐射量②地势③7月均温6.②曲线在b处数值很低的主要原因是A.地势高,气温低B.云量多,反射强C.距海近,水汽多D.纬度低,对流旺7.长江流域发生全流域特大洪灾,一般要具有下列条件中的①上游与中游干支流水位同时进入汛期或汛期时间比正常年份长②长江中上游森林植被破坏严重,涵养水源的作用减弱③因泥沙淤积或围湖造田造成干流排水不畅,湖泊调蓄能力减弱④长江流域的流域面积扩大A.①②③B.①②④C.①③④D.②③④8.长江中上游防护林所起的最重要的生态作用是A.涵养水源、保持水土B.繁衍物种、维护生物多样性C.调节气候、稳定大气成分D.净化空气、吸烟除尘9.下图是“我国四个地区河流流量过程线图”其中正确的是A.①②B.②③C.③④D.①④10.下列有关我国气温的说法,正确的是A.青藏高原是我国冬季气温最低的地方B.曾母暗沙是我国夏季气温最低的地方C.漠河是我国冬、夏气温最低的地方D.吐鲁番盆地是我国夏季气温最高的地区11.下图所示地区为“我国某区域图”。

北京市房山区周口店中学2014-2015学年高二物理下学期期中试题

一 、本题共16小题,在每小题给出的四个选项中,只有一个选项......是符合题意的。

(每小题3分,共48分)1.对做简谐运动的物体来说,当它通过平衡位置时,具有最大值的是 A 加速度 B 位移 C 速度 D 回复力 2.关于电磁感应,下列说法中正确的是( ) A 、穿过线圈的磁通量越大,感应电动势越大。

B 、穿过线圈的磁通量为零,感应电动势一定为零。

C 、穿过线圈的磁通量的变化越大,感应电动势越大。

D 、穿过线圈的磁通量变化越快,感应电动势越大。

3. 如图所示,线圈两端与电阻相连构成闭合回路,在线圈上方有一竖直放置的条形磁铁,磁铁的N 极朝下.在将磁铁的N 极插入线圈的过程中 A .通过电阻的感应电流的方向由a 到b ,线圈与磁铁相互排斥 B .通过电阻的感应电流的方向由a 到b ,线圈与磁铁相互吸引 C .通过电阻的感应电流的方向由b 到a ,线圈与磁铁相互排斥 D .通过电阻的感应电流的方向由b 到a ,线圈与磁铁相互吸引 4.一交流电压的图象如图所示,将该交流电压加在一阻值为22 Ω的电阻两端,下列说法中正确的是( ) A.该电阻消耗的功率为550 WB.该交流电压的瞬时值表达式为u =110 sin100πt(V)C.并联在该电阻两端的交流电压表的示数为1102 VD.通过电阻的电流的有效值为52A5.如图,小灯泡A 、B 完全相同,带铁芯的线圈上的直流电阻可忽略,则( )A .S 闭合瞬间,A 不亮,B 立即亮 B .S 闭合瞬间,B 不亮,A 立即亮C .稳定后再断开S 瞬间,A 、B 灯同时熄灭D .稳定后再断开S 瞬间, B 灯立即熄灭,A 灯突然闪亮一下再熄灭 6.一质点做简谐运动的图象如图8所示,下列说法正确的是( ) A .质点运动频率是4Hz B .在10s 内质点经过的路程是20cm C .第4末质点的速度是零D .在t=1s 和t =3s 两时刻,质点位移大小相等、方向相同x /c mt /so2 4 6 10 12 8 2-2abυS N周口店中学2014—2015学年度第二学期期中试卷高二年级物理7.如图3所示,一理想变压器原、副线圈匝数比n1:n2=11:5。

周口中英文学校2014-2015学年高二下学期期中考试英语试题含答案

周口中英文学校高2014-2015学年度下期高二年级期中考试英语试题第二部份:阅读理解(共两节,20小题,每小题2分,满分40分)第一节(共15小题,每小题2分,共30分)阅读下列短文,从每题所给的四个选项中选出最佳选项,并在答题卡上将之涂黑AMark Twain was a great writer. He was from the USA. He was born in 1835. He was also a famous speaker. He was famous for his sense of humor. Many people liked to listen to him talk because he liked to tell some interesting stories to make people laugh all the time.One day Mark Twain was going to a small town because of his writing. Before he was going to leave, one of his friends said to him that there were always a lot of mosquitoes in the town and told him that he’d better not go there. Mark Twain waved (摇动) his hand and said, “It doesn’t matter. The mosquitoes are no relatives of mine. I don’t think they will come to visit me.”After he arrived at the town, Mark Twain stayed in a small hotel near the station. He went into his room, but when he was just about to have a rest, quite a few mosquitoes flew about him. The waiters felt very sorry abou t that. “I’m very sor ry, Mr Mark Twain. There are too many mosq uitoes in our town.”One of them said to him.Mark Twain, however, made a joke, saying to the wai ter, “The mosquitoes are very clever. They know my room number. They didn’t come into the wrong room.”What he said made all the people present laugh heartily.But that night Mark Twain slept well. Do you know why? That was because all the waiters in the hotel were driving the mosquitoes away for him during the whole night.21. That day Mark Twain went to the town _____.A. to see one of his friendsB. because he was told there were a lot of mosquitoes thereC. to see one of his relativesD. because he wanted to do something there for his writing22. The waiters felt sorry because _____.A. they did something wrong to Mark TwainB. there were quite a few mosquitoes in Mark Twain’s roomC. their hotel was too smallD. the room was not very clean23. All the people present laughed heartily because _____.A. the mosquitoes were very clever and they didn’t come into the wrong roomB. Mark Twain made a jokeC. the mosquitoes knew Mark Twain’s room numberD. Mark Twain gave the waiters some nice presents24. From the story we know _____.A. the owner of the hotel told the waiters to look after Mark Twain well at nightB. Mark Twain didn’t have a good rest that nightC. no mosquitoes troubled Mark Twain in the nightD. there were not mosquitoes in the hotel any longerBSummer CampsSports CampOur sports camp allows kids to discover new sports they have never tried before. Outdoor activities, language learning and cultural experiences will also be a part of the program. The summer program already includes sports but you can choose to discover, practice and experience more new sports. As the camp offers more than 30 different outdoor sports, the choice isn’t small!Art CampA nice camp will introduce kids to painting skills and theatre classes. Whether they have had skills in these areas or have never tried them, our team of artists and instructors will help kids to develop and experiment new skills that will turn kids into great artists. The art summer camp is to develop artistic skills and build up creativity. It also includes outdoor activities, language learning and cultural experiences.Science CampThe camp will provide you with the skills to use new technologies and communication methods. In this camp, kids will learn to create their own video films with pictures, music, sound, camera recordings and texts. It will help children develop their creativity and teamwork skills in a fun way. This summer program includes outdoor activities, language learning and cultural experiences. You will have an unforgettable fun experience here!Animal CampOur animal camp will offer one of the finest programs for kids. With over 250 animals, campers have more chances to learn about animals. Every camper is sure to have a wonderful summer experience! Our program centers on nature study. At the camp, campers can do all the things you would expect from a camp. We offer more than 100 activity choices each week.25. In the art camp, campers can ______.A. paint with famous artistsB. learn with the help of teachersC. create their own video filmsD. go to the theatre every evening26. If you want to learn more about nature, you should choose ______.A. Sports CampB. Science CampC. Animal CampD. Art Camp27. Where can we most probably read this passage?A. In a shop window.B. In a newspaper.C. In a fashion magazine.D. In a book on sports.28. We can learn from the passage that the camps ______.A. give campers choices of learning foreign cultureB. introduce teamwork to campers in an interesting wayC. provide different experiences for kids in summerD. offer at least thirty outdoor activities in the open airCMaybe it is true that we do not know what we have got until we lose it,but it is also true that we do not know what we have been missing until it arrives.It takes an hour to like someone,and a day to love someone,but it takes a lifetime to forge t someone. Giving someone all your love is never an assurance(保证)that they will love you back. Do not expect love in return;but if it does not,be content it has grown in yours. Do not rely on one's appearance;it can trick you. Do not rely on wealth;even that fades away. Rely on someone who makes you smile,because it takes only a smile to make a dark day seem bright. There are moments in life when you miss someone so much that you just want to pick them from your dreams and hug them. Dream what you want to dream;go where you want to go;be what you want to be,because you have only one life and one chance to do all the things you want to do. The brightest future will always be based on a forgotten past. You cannot go on well in life until you let your past failures and heartaches go off. May you have enough happiness to make you sweet,enough trials(考验)to make you strong,enough sorrow to keep you human,enough hope to make you happy. The happiest people do not necessarily have the best of everything;they just make the most of everything that comes along their way. Happiness waits for those who cry,those who appreciate the importance of people who have touched their lives. Always put yourself in others' shoes. If you feel that it hurts you,it probably hurts the other person,too.When you were born,you were crying and everyone around you was smiling. Live your life so that when you die,you are the one who is smiling and everyone around you is crying.29.I n t his passage,the writer wants to tell us ______.A.how to treat our life B.where to go with other personsC.what to do in our life D.how to get on well with other persons30. Which of the following statements is TRUE according to the passage?A.If you give someone your love,you are sure to receive love in return.B.It is wise not to rely on anybody because you are likely to be cheated.C.We often don't know what we have lost until it happens someday.D.If it takes you a short time to love someone,you will forget the person.31. One sho uld ______ the painful past according to the writer.A.value B.Forget C.remember D.consider32. In the last paragraph the writer is actually telling us that a person in the world should be one who ______.A.can accept the suggestions made by othersB.can live happily and forget the pastC.has made a lot of money for himself before he diesD.does good for other people and is respected and loved by themDMany people turn to doctors or self-help books, but they ignore a powerful thing that could help them fight illness: their friends.Researchers are only now starting to pay attention to the importance of friendship in health. A 10-year Australian study found that old people with a large circle of friends were 22 percent less likely to die during the study period than those with fewer friends. A large 2007 study showed an increase of nearly 60 percent in the risk for obesity (肥胖) among people whose friends gained weight. And last year, Harvard researchers reported that strong social ties could improve brain health as we age.“In general, the role (作用) of friendship in our lives isn’t well realized,”said Rebecca, a professor at the University of North Carolina. “Friendship has a bigger effect on our psychological (心理的) health than family relationships.”While many friendship studies are about the close relationships of women, some research shows that men can benefit, too. In a six-year study of 736 middle-aged men, having friendships reduces the risk of heart attack. Only smoking was as important a risk factor (因素) as having little social support.Exactly why friendship has such a big effect isn’t entirely clear. While friends can send a sick person to the hospital or pick up medicine, the benefits go well beyond physical assistance. Friendship clearly has a big psychological effect. “People with stronger friendships feel like there is someone they can turn to,”said Karen, a doctor. “The message of these studies is that friends make your life better.”33. The three studies in the second paragraph show that ______.A. old people need friends the mostB. social ties are connected to healthC. more friends make us healthierD. friends can help us lose weight34. What do Rebecca’s words mean?A. Friendship is more important to women than to men.B. What people need most is a friend’s care.C. The value of friendship hasn’t been fully understood.D. Friendship is more important than family relationship.35. The author mentioned smoking in the text to discuss ______.A. the risk of having no friendsB. the cause of heart attackC. smoking is bad for menD. friends’influence on habits第二节(共5小题;每小题2分,满分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. 选项中有两项为多余选项. 请将答案涂在答题卡上.ForgivenessTo forgive is a virtue, but no one has ever said it is easy. When someone has deeply hurt you, it can be extremely difficult to let go of your hate. However, forgiveness is possible, and it can be surprisingly beneficial to your physical and mental health. People who forgive show less sadness, anger and stress and more hopefulness, according to a recent research.36 Try the following steps:Calm yourself. 37 You can take a couple of breaths and think of something that gives you pleasure: a beautiful scene in nature, or someone you love.Don’t wait for an apology. Many times the person who hurt you does not intend to apologize. They may have wanted to hurt you or they just don’t see things the same way. 38 Keep in mind that forgiveness does not necessarily mean becoming friends again with the person who upset you.Take the control away from your offender(冒犯者). Rethinking about your hurt gives power to the person who caused you pain. Instead of focusing on your mounded feelings, learn to look for the love, beauty and kindness around you.39 If you understand your offender, you may realize that he or she was acting out of unawareness, fear, and even love. You may want to write a letter to yourself from your offender’s point of view.Don’t forget to forgive yourself. 40 But it can rob you of your self-confidence if you don’t do it.A. Why should you forgive?B. How should you start to forgive?C. Recognize the benefits of forgiveness.D. Try to see things from you offender’s angle.E. For some people, forgiving themselves is the biggest challenge.F. To make your anger die away, try a simple stress-management technique.G. If you wait for people to apologize, you could be waiting an awfully long time.第三部分:英语知识应用(共两节,满分45分)第一节:完形填空(共20小题,每小题1.5分,共30分)阅读下面短文,从短文后各题所给的四个选项中选出能够填入空白处的最佳选项,并在答题卡上将之涂黑After a long day at school,I walked home with my heavy schoolbag. Sleepy and 41 , I threw my things on the couch and took something from the 42 to eat. I passed by the living room and wished I could watch TV, but I knew my 43 would take me the whole night. I took my schoolbag and went 44 to my room. I tried to understand chemistry and 45 sleepiness at the same time. I tried to keep my eyes 46 and I wanted something to cheer me up.Later, I 47 the sound of the front door opening. And I waited for it—the sound of my mom singing. Though she sang off-key(跑调), it made me 48 that she was here. I ran down to 49 my mom. We hugged each other and talked for a while. I liked it when my mom was happy. Her 50 seemed to flow (流动) down to me and I got the strength to 51 the stress again.Sometimes, I wonder how my mom can still be 52 after coming back from work. Every weekday, she wakes up 53 in the morning to go to work and spends an hour on the bus before getting downtown. At a clothing factory, she works standing for the whole day and 54 clothes. After work, my mom at times gets stuck (卡住)in 55 for two hours on her way back home. When I 56 my school life with her work life, I should not be the one to 57 . At least I have some interesting things to do at school, but while drawing patterns, one mistake at work can cost my mom her job. I 58 it when my mom has a positive attitude and lives her life with a joyous heart, which encourages me to do my work well. 59 there may be difficulties, seeingher happy makes me feel 60 , too.41. A. heavy B. busy C. hungry D. unlucky42. A. classroom B. kitchen C. bedroom D. apartment43. A. dream B. program C. homework D. experience44. A. Downstairs B. outside C. upstairs D. inside45. A. break off B. put off C. take off D. fight off46. A. opening B. opened C. open D. closing47. A. felt B. listened C. raised D. heard48. A. disappointed B. tired C. excited D. stressed49. A. look B. greet C. complain to D. help50. A. stress B. idea C. belief D. energy51. A. face B. change C. support D. leave52. A. creative B. negative C. competitive D. positive53. A. early B. soon C. fast D. late54. A. managing B. organizing C. selling D. designing55. A. chat B. traffic C. duty D. task56. A. switch B. exchange C. connect D. compare57. A. complain B. decide C. study D. play58. A. achieve B. notice C. Appreciate D. challenge59. A. However B. While C. As D. Because60. A. inspired B. bored C. successful D. important第II卷第三部分:英语知识应用(共两节,满分45分)第二节(共10小题,每小题1.5分,满分15分)阅读下面短文,在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式,并将答案填在答题卡上。

北京市房山区周口店中学2014-2015学年高二下学期期中考试地理试卷

总分:100分 考试时间:90分钟第一部分(选择题 共50分)下列各小题均有四个选项,其中只有一项最符合题意要求。

请将所选答案填涂在答题卡上(每小题1分,多选、错选、漏选,该小题均不得分)。

1.旅游资源必须具备的两个条件是①对旅游者具有一定的吸引力,能使旅游者得到一定的物质享受和精神满足 ②古代或现代人类通过劳动而固定于地表的创造物 ③自然界的创造物或现象④具有一定的经济、社会、文化价值,能给旅游业带来一定的经济效益和社会效益 A .①③ B .①④ C .②③ D .②④2. 2010年以来我国已成为世界第一旅游接待国和主要旅游客源输出国,其主要原因是我国①旅游资源丰富 ②对外开放力度加大 ③居民收入不断提高 ④人造景观众多A .①③ B. ②④ C. ①④ D. ②③读图1,回答3~5题。

3.图中沿北纬30°附近旅游资源属于自然景观的有A .①② B. ②③ C. ①③ D. ②④4.图中①、④所处纬度大体相当,造成两地景观差异显著的首要自然原因是A .太阳辐射 B.大气环流 C.地势起伏 D.洋流5.到④地旅游,最佳的欣赏方法是A .远距离俯视 B.特定地点观赏 C.特定时间观赏 D. 动态观赏 6.下列我国的世界遗产中,全部属于“文化和自然遗产”的是A .苏州古典园林、青城山—都江堰、武当山古建筑群B .黄龙风景名胜区、云南三江并流保护区、长城C .黄山、武夷山、峨眉山—乐山大佛D .武陵源风景名胜区、庐山国家公园、泰山位于安徽南部的黄山集名山胜景于一身,其兼泰山之雄伟、华山之俊俏、衡山之烟云、庐山之飞瀑、峨嵋之清秀、雁荡之巧石、长白之温泉,是我国特点最多的名山,也很自然地成为我国著名的旅游胜地。

结合所学,回答7~14题。

图1图3 西藏布达拉宫7.黄山地处我国A .华北地区B .长江以北C .第二级阶梯D .亚热带季风气候区 8. 黄山著名的迎客松能生长于悬崖峭壁之上,是因为A .那里的岩石性质比较松软有利于根部伸展B .那里的土壤比较肥沃有利于植物生长C .黄山松的根部能释放酸性物质,溶解侵蚀花岗岩体D .悬崖峭壁处的光照条件非常好9.到黄山游览之前,需要做的工作是( )①选择观赏的位置 ②确定合适的旅游路线③了解黄山形成的地理原理 ④了解温泉的历史文化价值A .①②B .②③C .③④D .①④ 10.黄山景区的基本组成要素中,属于景区吸引物的是A. 黄山“四绝”B.旅游者C. 景区服务业D.景区的基础设施11.图2是黄山著名旅游景观“猴子观海”照片。

北京市房山区周口店中学2014-2015学年高二下学期期中考试化学试卷 Word版含答案.pdf

周口店中学2014—2015学年度第二学期期中考试试卷 高 二 年 级 化 学 可能用到的原子量:Na 23、S 32、H 1、C 12、O 16 第Ⅰ卷 选择题 一、选择题(共25小题,每小题只有一个正确答案,每小题2分共计50分) 1. 未来新能源的特点是资源丰富,在使用时对环境无污染或污染很小,且有些可以再生。

下列属于最有希望的新能源的是( ) ①天然气 ②煤 ③核能 ④太阳能 ⑤生物质能 ⑥风能 ⑦氢能 ①②③④ B. ②⑤⑥⑦ C. ①③④⑤⑥ D. 除①②外 2. 右图是一个一次性加热杯的示意图,当水袋破裂时,水与固体碎块混合,杯内食物温度逐渐上升,制造此加热杯可选用的固体碎块是( )A. 硝酸铵B. 生石灰C. 氯化镁D. 食盐 3. 已知氢气的燃烧热为286 kJ/mol;且H2O(g)=H2O(l) ΔH=—44 kJ/mol。

下列热化学方程式正确的是( ) 2H2(g) + O2(g)=2H2O(g) ΔH=—286 kJ/mol 2H2(g) + O2(g)=2H2O(g) ΔH=—572 kJ/mol H2(g) + O2(g)=H2O(g) ΔH=—330 kJ/mol H2O(g)=H2(g) + O2(g) ΔH=+ 242 kJ/mol 4. 已知反应A 2B,A、B的浓度变化如图所示,下列反应速率正确的是( ) v(A)=9 mol/(L·min) v(B)=18 mol/(L·min) v(A)=4.5 mol/(L·min) v(B)=4.5 mol/(L·min) 5. 已知反应2M(g) + 2N(g) xP(g) + 2Q(g),将4 mol M和2 mol N混合,充入到2 L密闭容器中,2 min后达到平衡时,生成1.6 mol P,又测得v(Q)为0.2 mol/(L·min)。

下列说法正确的是( ) N的转化率是20% x=4 平衡时M的物质的量为2.8 mol 平衡时气体总压强比原来减小 6. 已知反应N2(g) + 3H2(g) 3NH3(g) ΔH < 0,能增大正反应速率的措施是( ) 通入N2 B. 扩大容器容积 C. 移去部分NH3 D. 降低体系温度 7. 对一已经达到化学平衡的体系,下列说法正确的是( ) 化学反应速率变化时,化学平衡一定发生移动 化学平衡发生移动时,化学反应速率一定变化 正反应进行的程度越大,正反应速率一定越大 使化学反应速率发生变化,而化学平衡不移动的影响因素,一定是催化剂 8. 工业通过氨的催化氧化制取硝酸,其中一个反应3NO2(g) + H2O(l) 2HNO3(aq) + NO(g) ΔH < 0,现欲提高反应物NO2的转化率,增加硝酸的产量,下列采取的措施可行的是( ) 增加压强 B. 加大水量 C. 升高温度 D. 加入催化剂 9. 下列说法错误的是( ) NH4NO3溶于水虽然吸热,但其溶于水是自发过程 加热液体(温度高于沸点)会自发转变成气体,可用晗判据解释 对于同一物质来讲,熵值的大小与其状态有关,固态物质的熵值通常最小 正确判断化学反应能否自发进行,要综合考虑反应的ΔH和ΔS 10. 向紫色Cr2(SO4)3溶液中加入NaOH溶液至析出蓝灰色沉淀,此时,溶液中存在着如下平衡:Cr3+(紫色)+3OH- Cr(OH)3(灰蓝色) CrO2-(绿色)+ H+ + H2O。

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周口一高2014-2015学年度下学期高二年级期中考试题
数学(理科)试题
一、选择题(每题5分,共60分)
1.
23)1()1i i -+(=
( D )
A .1+i
B .1-i
C .-1+i
D .-1-i
2.命题“对任意的01,23≤+-∈x x R x ”的否定式
( C )
A .不存在01,23≤+-∈x x R x
B .存在01,23≤+-∈x x R x
C .存在01,23>+-∈x x R x
D .对任意的01,23>+-∈x x R x
3.函数2)(=x f 在1=x 处的导数是______
( A ) A .0 B .1 C .2 D .-1
4.曲线x e y x
+=在点(0,1)处的切线方程为 ( A )
A .y=2x+1
B .y=2x-1
C . y=x+1
D . y=-x+1
5.利用数字归纳法证明不等式14
1312111>++⋅⋅⋅++++n n n n 时,有k 递推到k+1时,左边应添加的因式
( C )
A .)121
+k (
B .
)1(21
121+++k k
C .)
1(21
121+-+k k D .
121+k
6.已知椭圆
116
252
2=+y x 上的一点P 到椭圆一个焦点的距离为3,则P 到另一个焦点的距离
( D )
A .2
B .3
C .5
D .7
7.已知等式432
23
14
4
)1()1()1()1(b x b x b x b x x ++++++++=,则1
b ,2b ,3b ,4
b 的
值分别为 ( D )
A .0,0,0,0
B .-4,6,-3,0
C .4,-6,4,-1
D .-4,6,-4,1
8.小胖同学忘记了自己的QQ 号,但记得QQ 号是由一个1,一个2,两个5和两个8组成的六位数,于是用这六个数随意排成一个六位数,输入电脑尝试,那么他找到自己的QQ 号最多尝试次数为 ( B ) A .96 B .180 C .360 D .720
9.已知函数y=f(x)的图象是下列四个图象之一,则其导函数y=f '(x)的图象如图所示,则该函数的图象是( B )
10.有两排座位,前排4个座位,后排5个座位,现安排2人就坐,并且这2人不相邻(一
前一后也视为不相邻)那么不同坐法的种数是 ( A ) A .58 B .18 C .40 D .38 11.若(1+x+x 2)(x+3
1x )n
(n ∈N*)的展开式中没有常数项,则n 的可能取值是( C )
A .7
B .8
C .9
D .10
12.设函数m
x
x f πsin
3)(=。

若存在)(x f 的极值点0x 满足x 02+[f (x 0)]2<m 2,则m 的取
值范围是
( C )
A .(-∞,-6)∪(6,+∞)
B .(-∞,-4)∪(4,+∞)
C .(-∞,-2)∪(2,+∞)
D .(-∞,-1)∪(4,+∞)
二、填空题(每题5分,共20分)
13.已知x ,y ∈(0,+∞),且
121
1=+y
x ,则x+y 的最小值为 223+。

14.由曲线y=x ,直线y=x-2及y 轴所围成的图形的面积为3
16。

15.设函数)0(2)(>+=
x x x
x f ,观察: 2
)()(1+==x x
x f x f
4
3))(()(12+==x x
x f f x f
87))(()(23+=
=x x
x f f x f
16
15))(()(34+==x x
x f f x f
……
根据以上事实,由归纳推理可得:
当+
∈N n 且2≥n 时,=
=-))(()(1x f f x f n n n
2
)12(+-x x
n 。

16.从集合},,,{d c b a U =的子集中选出4个不同的子集,需同时满足以下两个条件:
(1)φ、U 都要选出;
(2)对选出的任意两个子集A 和B ,必有B A ⊆或A B ⊆。

那么,共有 36 种不同的选法。

三、解答题(共70分)
17.在△ABC 中,内角A 、B 、C 对边的边长分别是a 、b 、c ,已知c=2,C=3。

(1)若△ABC 的面积等于3,求a 、b ; (2)若sinB=2sinA ,求△ABC 的面积。

18.已知等差数列}{n a 满足02=a ,1086-=+a a 。

(Ⅰ)求数列}{n a 的通项公式; (Ⅱ)求数列⎭
⎬⎫
⎩⎨
⎧-12n n a 的前n 顶和。

19.如图,在棱锥P-ABCD 中,底面ABCD 是矩形,PA ⊥
平面ABCD ,PB 、PD 与平面ABCD 所成角的正切值依
次是1和
2
1
,AP=2,E ,F 依次是PB 、PC 的中点。

(Ⅰ)求证:PB ⊥AEFD ;
(Ⅱ)求直线EC 与平面PAD 所成角的正弦值。

20.已知函数x x f =)(1,22)(x x f =,33)(x x f =,x x f sin )(4=,f 5(x )=cos x , f 6(x )=lg (|x |+1),将它们分别写在六张卡片上,放在一个盒子中,
(Ⅰ)现从盒子中任取两张卡片,将卡片上的函数相加得到一个新函数,求所得的函数是奇函数的概率;
(Ⅱ)从盒子中任取两张卡片,已知其中一张卡片上的函数为奇函数,求另一张卡片上的函数也是奇函数的概率。

21.设F 1、F 2分别是椭圆)(1:22
22c b a b
y a x E >>=+(a >b >0)的左、右焦点,过点F 1的直线交于椭
圆E 与A 、B 两点,B F AF 113=。

(Ⅰ)若4=AB ,△ABF 2的周长为16,求2AF ; (Ⅱ)若5
3
cos 2=
∠B AF ,求椭圆E 的离心率。

22.函数)(x f =alnx+1(0>a )。

(Ⅰ)当0>x 时,求证:)11(1)(x
a x f -≥-;
(Ⅱ)在区间(1,e )上x x f >)(恒成立,求实数a 的范围;
(Ⅲ)当2
1
=
a 时,求证:++)3()2(f f …)1(++n f >)11(2+-+n n *)(N n ∈。

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