河南省洛阳八中2013-2014学年高二下学期第一次月考数学(文)试题
河南省洛阳八中2013-2014学年高一下学期第一次月考英语试题
河南省洛阳八中2013-2014学年高一下学期第一次月考英语试题第一部分:听力(共20题,30分)第一节1. How does Jenny probably feel now?A. Excited.B. Puzzled.C. Sad2. What happened to the man’s bike?A. It broke down.B. The key was missing.C. It was lost.3. Who wants to have a pear?A. The man.B. The woman.C. The women’s brother.4. What has the man been doing?A. Listening to the radio.B. Wacthing TV.C. Doing his homework.5. What does the man probably think of the picnic?A. Terrible.B. Just so-soC. Great.第二节6. What’s Mr Smith doing now?A. Talking on the phone.B. Having a meeting.C. Returning from a meeting.7. What will John do then?A. Go to a meeting .B. Call Mr Smith again.C. Visit Mr Smith this afternoon.8. How does the room look now?A. DirtyB. DarkC. Tidy9. Why did the man come to the man’s house?A. To borrow a book.B. To ask about a party.C. To ask for Mary’s phone number.10. What are the two speakers mainly talking about?A. Part-time jobs they want to do.B. Plans for their summer holiday.C. Lifestyles in different countries.11. What will the man do?A. Go to New YorkB. Go to work in Shanghai.C. Look for a part-time job.12. What do the woman’s like doing?A. Reading magazines.B. Traveling around the US by car.C. Visiting different countries in the world.13. What’s the relationship between the woman and Nana?A. ClassmatesB. RoommatesC. Best friends14. How old is Nana now?A. 5B. 7C. 12.15. Where does Nana come from?A. ChinaB. Korea.C. America.16. What do we know about Nana’s parents?A. They grew up in America.B. They were busy with their work.C. They didn’t know much about Chinese traditions17. When did the speaker’s grandma start writing?A. In the 1930s.B. In the 1940sC. In the 1950s18. What do we know about the speaker’s grandma’s first collection of short stories?A. It came out in the early 1960s.B. It was called Lives of Girls and Women.C. It won her a very important literary prize.19. How many collections of short stories has the speaker’s grandma published in all?A. 4.B. 10 .C. 14.20. What did the speaker’s grandma do in 2013?A. She published her latest book.B. She started writing in English.C. She won an important prize in literature.第二部分阅读第一节(共15题,30分)AAs for Jack, he stayed aboard and lived the life of a true pirate dog to the end of his days.21.According to the first two paragraphs, which of the following isTRUE?A. Bragwynn killed many people when he was young.B. Bragwynn had sailed at sea for many years.C. Bragwynn rowed about in his boat with a young man named Jack.D. Bragwynn did not notice the ship just ahead of him.22.Why did the captain on the ship say “I’ll give up” to Bragwynn?A. Because he was frightened by Bragwynn’s words.B. Because he thought Bragwynn a better captain.C. Because he was really ready to serve Bragwynn.D.Because he had an idea to deal with Bragwynn.23. When Bragwynn stepped through the door , he thought he was going______.A. into the kitchenB. back onto his own boatC. into the bathroomD. to gain the captain’s position24. Which of the following words best describe Bragwynn?A. Mean and brave.B. Crazy and foolish.C. Stubborn and friendly.D. Clever and cruel.BMei Lun and Mei Huan have been the first giant twin pandas born in the US since 1987. The names of these twin male giant panda cubs(幼崽) were announced at Atlanta Zoo last year. Lun Lun, a 15-year-old giant panda, gave birth to the cubs on July 15, 2013. Zoo officials followed Chinese custom and named the brothers after waiting 100 days. Until then, they were simply known as “Cub A” and “ Cub B”.Mei Lun and Mei Huan are the first twin panda cubs to survive in the Unite States. “We’re delighted to finally be able to place two youngsters with names. They have not only made a mark on the history of Atlanta Zoo, but also have made history in the US,” Raymond B. King , the zoo’s president and CEO, said in a statement.Atlanta Zoo teamed up with Good Morning America that month to put the pandas’names to a public vote. China’s Chengdu Research Base of Giant Panda Breeding provided the choices of names. In just 13 days, 51,000 votes poured in on the show’s website.Under a deal between China and the US, giant pandas originally from China are only lent to foreign zoos for scientific study for several years. Zookeepers at Atlanta Zoo are giving regular updates on the twins’ progress in an online blog. Mei Lun and Mei Huan are the fourth and fifth offspring(子女) of Lun Lun and a male giant panda named Yang Yang.The pandas made their first public appearance in a US exhibit last fall. For the three months before their appearance, the online world had watched the twins grow strong and healthy. “We share this joy with our colleagues(同事) in China and with the cub’s fans around the world,” King said.25. The underlined words “ that month” probably refer toA. JulyB. SeptemberC. OctoberD. December26. How did the twins get their names?A. Good morning America named them.B. Zoo Atlanta gave them the names.C. China provided their names for votes.D. The US decided their names.27. What can be inferred from the passage?A. Yang Yang belongs to America.B. The two cubs are not in good health.C. Yang Yang is the father of the twins.D. The cub’s fans haven’t watched the twins in the zoo.28. What’s the main idea of the passage?A. The twin panda cubs were born in the US.B. The twin pandas grew strong and healthy.C. The names of the twin pandas were announced.D. The names of the twin pandas were given by the public.CBuffet is the son of the best investor(投资者)Warren Buffet, and he's the CEO of a philanthropic foundation(慈善基金会). But he’s also a lifelong farmer. He is familiar with the saying that each farmer can expect to have 40 opportunities to improve their harvest. And it’s not just farmers who know there’s a clock running on their efforts. “ We all need to recognize that we only have a fixed amount of time to affect change,”said Howard G. Buffett(HGB)HGB wants to invest more than $3 billion, in an effort to end global hunger and poverty for the world’s nearly one billion poor people by 2045. He’s decided to focus much of his effort on farming in the developing world. He believes that the best way to deal with poverty is to change the lives of farmers in the poorest nations on the planet. “It’s a pretty well proven fact that nothing works better at bringing people out of poverty than investment in rural areas,” said HGB.Healthy soils are a most important part of productive farmers, but 1.5 billion people — a fifth of the global population — live on poor land. ”You have to fix the soil,” he said. HGB also has the idea that farmers who own their own land will raise crops with an eye to the long-term health of the soil.He would like to see that balanced with a foreign-aid plan. HGB notes that too often, experts want to make agriculture in developing nations look like farming in rich countries.” It’s not going to happen like that,” said HGB. “You need to consider local differences, local culture.” Many more ideas of HGB can be found in his new book, Forty Chances Finding Hope in a Hungry World.29. From the second paragraph, we can learn that HGB’s main purpose is_______.A. to invest lots of money in farmingB. to end hunger and povertyC. to change farming in the worldD. to help the poorest nations in the world.30. What’s the population of the whole world?A. 1.5 billionB. One fifth billionC. 6 billionD. 7.5 billion31. What can be inferred from the last paragraph?A. The farming methods in rich countries suit developing countries.B. HGB thinks agriculture of the west is not good at all.C. All the farming methods don’t suit developing countries.D. HGB gains his ideas from the book Forty Chances.32. What can be the best title for the passage?A. HGB invests to end hungerB. A great farmer, HGB.C. HGB, one son of Warren BuffetD. HGB invests in the developing countries.DClimate change will increase U.S wildfires, and the smoky air will cause terrible problems in areas far beyond those burned, reports an environmental group Thursday.Two-thirds of Americans, or nearly 212 million, lived in states suffering from wildfire smoke three years ago, according to the report by the Natural Resources Defense Council (NRDC). These areas, which had smoke for at least a week, were nearly 50 times greater than those burned directly by fire.“ It affects a much wider area of the United States than people have realized, ”says author Kim Knowlton, a Columbia University health professor, adding the smoke can move up to hundreds of miles. She says the smoke contains air pollution and can cause several kinds of disease.Texas was hit hardest in 2011, when smoke stayed for at least a week in areas that are home to 25 million people, according to NRDC’s report. Illinois, which recorded no wildfires within its borders( 边界) ,ranked (排名) second with nearly 12 million people affected by smoke that moved in from elsewhere. The other eight states with the most people exposed (接触) to smoky air were, in descending ( 下降的) order Florida, Missouri, Georgia, Louisiana, Michigan, Alabama, Oklahoma and Iowa.Nearly two dozen states had no wildfires within their borders in 2011, but eight of them still had at least one week of smoky air Illinois, Missouri, Iowa, Kansas, Nebraska, Indiana, Wisconsin and Ohio.Only 18 states and the District of Columbia had no people exposed to at least a week of smoke that year, although five of them----Alaska, California, Hawaii, Nevada and Utah---had a large area burned by wildfires.The problem will only get worse, Knowlton say. Scientific research shows climate is causing higher temperatures and health problems.33. We can learn from the first two paragraphs that .A. most Americans suffered from climate change.B. the states burned by wildfires had more serious problems.C. most Americans suffered from wildfire smoke in 2011.D. Every state had wildfire smoke for at least a week.34. Which of the following states had wildfires within its borders?A. TexasB. Kansas.C. OhioD. California.35. What would be the best title for the passage?A. Climate change causes more wildfires.B. More wildfires cause climate change.C. Wildfire smoke becomes a serious health problem.D. Air pollution becomes a terrible problem.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。
河南省高二下学期第一次月考数学试卷(文科)
河南省高二下学期第一次月考数学试卷(文科)姓名:________ 班级:________ 成绩:________一、单选题 (共12题;共24分)1. (2分)设斜率为2的直线过抛物线的焦点F,且和轴交于点A,若△OAF(O为坐标原点)的面积为4,则抛物线方程为().A .B .C .D .2. (2分)观察图形规律,在其右下角的空格内画上合适的图形为()A .B .C .D .3. (2分) (2017高二下·安阳期中) 复数z1=1+bi,z2=﹣2+i,若的实部和虚部互为相反数,则实数b 的值为()A . 3B .C . ﹣D . ﹣34. (2分)已知U=R,函数y=ln(1﹣x)的定义域为M,集合N={x|x2﹣x<0}.则下列结论正确的是()A . M∩N=NB . M∩(∁UN)=∅C . M∪N=UD . M⊆(∁UN)5. (2分)若直线y=kx+4+2k与曲线y=有两个交点,则k的取值范围是()A . [1,+∞)B . [﹣1,﹣)C . (, 1]D . (﹣∞,﹣1]6. (2分) (2016高二下·黑龙江开学考) 执行如图所示的程序框图,若输入n的值为6,则输出s的值为()A . 105B . 16C . 15D . 17. (2分) (2020高一上·安庆期末) 若函数的图像经过点 ,则其图像必经过点()A .B .C .D .8. (2分)(2016·安徽模拟) 若将函数f(x)=cosx(sinx+cosx)﹣的图象向右平移φ个单位,所得函数是奇函数,则φ的最小正值是()A .B .C .D .9. (2分)等差数列中,,,设是数列的前n项和,则S8=()A . -16B . 16C . -32D . 3210. (2分) (2016高一上·天水期中) 若log2a<0,()b>1,则()A . a>1,b>0B . a>1,b<0C . 0<a<1,b>0D . 0<a<1,b<011. (2分)已知向量,,则“”是“”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12. (2分)若复数z满足,则等于()A .B .C .D .二、填空题 (共4题;共4分)13. (1分) (2016高三上·黑龙江期中) 设△ABC中,角A,B,C的对边分别为a、b、c,且2sinA=sinB+sinC,a=2,则△ABC面积的最大值为________.14. (1分) (2016高一下·信阳期末) 某同学在求解某回归方程中,已知x,y的取值结果(y与x呈线性相关)如表:x234y64m并且求得了线性回归方程为 =﹣ x+ ,则m等于________.15. (1分) (2017高一下·珠海期末) 已知,则△ABM 与△ACM 的面积的比值为________.16. (1分) (2017高二下·太和期中) 已知F是椭圆C: + =1的右焦点,P是C上一点,A(﹣2,1),当△APF周长最小时,其面积为________.三、解答题 (共5题;共40分)17. (5分) (2018高二下·聊城期中) 设复数的共轭复数为,且,,复数对应复平面的向量,求的值和的取值范围.18. (10分) (2017高二上·河南月考) 已知抛物线关于轴对称,它的顶点在坐标原点,点在抛物线上.(1)写出该抛物线的标准方程及其准线方程;(2)过点作两条倾斜角互补的直线与抛物线分别交于不同的两点 ,求证:直线的斜率是一个定值.19. (5分)(2017·石家庄模拟) 已知抛物线C:y2=2px(p>0)过点M(m,2),其焦点为F,且|MF|=2.(Ⅰ)求抛物线C的方程;(Ⅱ)设E为y轴上异于原点的任意一点,过点E作不经过原点的两条直线分别与抛物线C和圆F:(x﹣1)2+y2=1相切,切点分别为A,B,求证:直线AB过定点F(1,0).20. (10分) (2015高三上·辽宁期中) 数列{an}满足a1=1,nan+1=(n+1)an+n(n+1),n∈N* .(1)证明:数列{ }是等差数列;(2)设bn=3n• ,求数列{bn}的前n项和Sn .21. (10分) (2016高一上·沽源期中) 如图1:已知正方形ABCD的边长是2,有一动点M从点B出发沿正方形的边运动,路线是B→C→D→A.设点M经过的路程为x,△ABM的面积为S.(1)求函数S=f(x)的解析式及其定义域;(2)在图2中画出函数S=f(x)的图象.参考答案一、单选题 (共12题;共24分)答案:1-1、考点:解析:答案:2-1、考点:解析:答案:3-1、考点:解析:答案:4-1、考点:解析:答案:5-1、考点:解析:答案:6-1、考点:解析:答案:7-1、考点:解析:答案:8-1、考点:解析:答案:9-1、考点:解析:答案:10-1、考点:解析:答案:11-1、考点:解析:答案:12-1、考点:解析:二、填空题 (共4题;共4分)答案:13-1、考点:解析:答案:14-1、考点:解析:答案:15-1、考点:解析:答案:16-1、考点:解析:三、解答题 (共5题;共40分)答案:17-1、考点:解析:答案:18-1、答案:18-2、考点:解析:考点:解析:答案:20-1、答案:20-2、考点:解析:答案:21-1、答案:21-2、考点:解析:。
河南省洛阳八中2013-2014学年高二下学期第一次月考英语试题
注意:时间90分钟,满分120分一卷I. 阅读理解(每小题2分,满分30分)AIn the past, many disabled Chinese people led very restricted (受限制的) lives. They had little chance to find work or support themselves. But their situation has improved dramatically over recent decades.In the past five years, the government has been stepping up efforts to help employ disabled people. Huge investments have been made in training, and many disabled people have found jobs and become financially independent.When Wu Zihe was growing up, she was like a prisoner in her home. Having a job was something she could only dream about. But now she is famous for her art. Wu is working on a landscape. She said, “I can earn 30 or 40 yuan for paintings like this, if they are sold in groups. If I sell them separately, I can get about 100 yuan. It only takes me one day to finish one painting, so I can earn 1,000 to 2,000 yuan a month.”Wu Zihe practices knife-drawing, which originated in her hometown Dunhua. If one has the eyes, the brain and hands, it takes about a year to learn the basic techniques.Dunhua government’s official Zhang Chunhua said, “We think it suits disabled people very well. So the government spent 10 million yuan to set up this knife-painting training center for them.”Training in the center is free. Even the materials are provided by the government. Since last year, the center has trained over 200 disabled persons like Wu Zihe. They usually earn 500 to 1,000 yuan per month. Sometimes they make as much as 5,000 yuan. That’ s much higher than average salaries in the area.This year, the city has set up a center to sell these works. Art fans from more than ten countries and regions have bought paintings.1. How was life for the disabled people in the past?A. They had to stay at home and had little chance to find jobs.B. According to the law, they led very restricted lives.C. With the help of the government, they led a comfortable life.D. They had to learn to paint to earn a living.2. From the passage we can learn that ________.A. the disabled had to earn a living by workingB. all the disabled have found jobs and become financially independent these yearsC. the disabled people’s living situation has improved greatly in recent yearsD. more and more disabled people will learn to paint3. From the last paragraph we can conclude that ____.A. Dunhua has set up a center to sell knife-drawing worksB. perhaps some of Wu Zihe’s paintings could be brought abroadC. only the disabled people’s paintings could be sold to foreignersD. people who like knife-drawing art have bought the disabled people’s paintings4. What would be the best title of the passage?A. A kind of folk art in China.B. Knife-drawing was first developed in Dunhua.C. A knife-painting training center in Dunhua.D. China helps the disabled find jobs.B5. According to the passage, winners .A. deal with problems rather than blame othersB. meet with fewer difficulties in their livesC. have responsible and able colleaguesD. blame themselves rather than others6. The underlined word remedy in Paragraph 1 is closest in meaning to .A. avoidB. acceptC. improveD. consider7. When your colleague brings about a problem, you should .A. find a better way to handle the problemB. blame him for his lack of responsibilityC. tell him to find the cause of the problemD. ask a more able colleague for help8. Which of the following is the best title for the passage?A. A Winner’s Opportunity.B. A Winner’s Secret.C. A Winner’s Problem.D. A Winner’s Achievement.CWhat will people die of 100 years from now? If you think that is a simple question, you have not been paying attention to the revolution that is taking place in bio-technology(生物技术). With the help of new medicine, the human body will last a very long time. Death will come mainly from accidents, murder and war. Today’s leading killers, such as heart disease, cancer, and aging itself, will become distant memories.In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells(细胞) are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond l20 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine to repair their organs ( The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on—in much the same way our bodies make new skin cells to take the place of old ones.It is exciting to imaging that the advance in technology may be changing the most basic condition of human existence, but many technical problems still must be cleared up on the way to this wonderful future.9.According to the passage, human death IS now mainly caused by .A、diseases and agingB、accidents and warC、accidents and agingD、heart disease and war10.In the author’ s opinion, today’s most important advance in technology lies in.A、medicineB、the InternetC、brain cellsD、human organ11.Humans may live longer in the future because .A、heart disease will be far away from usB、human brains can decide the final deathC、the basic materials of cells will last foreverD、human organs can be repaired by new medicine12.We can learn from the passage that .A、human life will not last more than 120 years in the futureB、humans have to take medicine to build new skin cells nowC、much needs to be done before humans can have a longer lifeD、we have already solved the technical problems in building new cellsDAmong all the malignancies (恶性肿瘤), lung cancer is the biggest killer: more than 10,000 Americans die of the disease a year. Giving up smoking is one of the obvious ways to reduce the risk, but another answer may lie in the kitchen. According to a new report, even heavy smokers may be protected from developing lung cancer by a simple dietary measure: a daily portion of carrots, spinach or any other vegetable or fruit containing a form of vitamin A called carotene (胡萝卜素).The finding, published in the British medical journal TheLancet, is a part of a long-range investigation of diet and disease. Since 1957 a team of American researchers has monitored the dietary habits and medical histories of 2,000 middle-aged men employed by the Western Elect ric Co. in Chicago. Led by Dr Richard Shekelle of Chicago’s Rush-Presbyterian-St. Luke’s Medical Center, the researchers recently began to sort out the links between the subjects’ dietary patterns and cancer. Other studies of animals and humans have suggested that vitamin Aoffers some protection against lung cancer. The connection seems logical, explains Shekelle, since vitamin A is essential for the growth of the epithelial (上皮的) tissue that lines the airways of the lungs.But the earlier research did not distinguish between two different forms of the vitamin. Preformed vitamin A is found mainly in liver and dairy products like milk, cheese, butter and eggs. But vitamin A is also made in the body from carotene, which is abundant in a variety of vegetables and fruits, including carrots, spinach, squash (南瓜), tomatoes, sweet potatoes and apples.In the Western Electric study, Shekelle and his colleagues found few connections between the incidence of lung cancer and the consumption of foods containing preformed vitamin A. But when they examined the data on carotene intake, they discovered a significant relationship. Among the 488 men who had the lowest level of carotene consumption, there were fourteen cases of lung cancer; in a group of the same size that ate the most carotene, only two cases developed. The apparent protective effect of carotene helps even longtime smokers, but to a lesser degree.Further studies will be necessary before the links between lung cancer and carotene can be firmly established. In the meantime, researchers warn against large numbers of vitamin A pills, because the tablets contain a form of the chemical that can be extremely poisonous in high doses. Instead, they advise a well-balanced diet that includes foods rich in carotene. For a smoker, half a cup of carrots every day might make the difference between life and death.13. Which of the following might be most helpful for people to avoid getting lung cancer?A. Eating vegetables containing carotene every day.B. Giving up smoking right now.C. Eating more fresh fruits every day.D. Eating a simple everyday diet.14. From Paragraph 2 we can learn that ________.A. Shekelle has been researching lung cancer since 1957B. the links between diet and lung cancer were discovered by Shekelle himselfC. Shekelle got the finding after monitoring 2,000 men for many yearsD. the researchers have investigated the relationship between diet and disease for half a century15. The examinations on groups of people of the same size showed that ________.A. few people got lung cancer because most of them have a well-balanced dietB. the incidence of lung cancer is closely related to the intake of caroteneC. the intake of carotene has little protective effect on longtime smokersD. the result of the earlier research is false and of no useII. 完形填空(30分)In our discussion with people on how education can help them succeed in life, a woman remembered the first meeting of an introductory__16__course about 20 years ago.The professor __17__the lecture hall, placed upon his desk a large jar filled with dried beans (豆), and invited the students to _18_how many beans the jar contained. After __19__shouts of wildly wrong guesses the professor smiled a thin, dry smile, announced the __20__ answer, and went on saying, ”You have just __21__an important lesson about science. That is Never__22__ your own senses.”Twenty years later, the __23__could guess what the professor had in mind. He __24__himself,perhaps, as inviting his students to start an exciting __25__into an unknown world invisible(无形的)to the 26 ,which can be discovered only through scientific 27 . But the seventeen-year-old girl could not accept or even 28 the invitation. She was just 29 to understand the world. And she 30 that her firsthand experience could be the 31 .The professor, however, said that it was 32 .He was taking away her only 33 for knowing and was providing her with no substitute. “I remember feeling small and 34 ,”the women says,“and I did the only thing I could do. I 35 the course that afternoon, a nd I haven’t gone near science since.”16.A.art B.science C.history D.math17.A.looked at B.searched for C.got through D.marched into18.A.count B.guess C.report D.watch19.A.warning B.turning away C.giving D.listening to20.A.ready B.correct C. Difficult D.possible21.A.prepared B.taught C.Taken D.Learned22.A.trust B.sharpen C.Show D.lose23.A.lecturer B.speaker C.Woman D.Scientist24.A.described B.respected C.saw D.served25.A.movement B.change C.Rush D.V oyage26.A.eye B.knowledge C.Light D.professor27.A. senses B.spint C.Methods D.model28.A.make B.present C.Refuse D.hear29.A.suggesting B.pretending C.Waiting D.beginning30.A.doubted B.proved C.Explained D.believed31.A.growth B.faith C.Truth D.strength32.A.firm B.interesting C.wrong D.acceptable33.A.task B.tool C.success D.connection34.A.cruel B.proud C.frightened D.brave35.A.dropped B.started C.passed D.missedIII. 任务型阅读(七选五,10分)Many schools require yearly parent teacher conferences for all students. ___71__.The list below is to help teachers prepare themselves for these often difficult conferences.___72__.When you have students who are struggling in either their academics or their behavior, you should communicate with their parents using notes or phone calls.Come to the conference well-prepared. If the student is having a hard time with their work, show the parents their grades and samples of their work. ___73___ .If the student is misbehaving, then you should make detailed notes of their behavior before the conference. Bring these notes to the conference so that parents can understand how their children are behaving.____74___. For example, you might say something about their creativity, their handwriting, their sense of humor, or make some other comment. Instead of restating the problems you’ve already discussed, end with a comment that offers hope for the future. You could say something like, “ Thanks for meeting with me today. I know that working together we can help Johnny succeed.”Some teachers may have to deal with an angry parent at some point. ___75___. Much anger can be avoided if the parents are informed. Don’t get excited yourself and make s ure you avoid shouting.A. Communicating with parents before a conference is necessary.B. Try to think of something nice to say about the students that have problems.C. At the end of the conference, you should make a conclusion.D. A paren t teacher conference can have a huge impact on a student’s work and behavior.E. Remember to thank the parents for coming to the conference and working with you.F. Remember that the best way to solve this is to keep parents informed every step of the way.G. It is easier for parents to understand the problem if they can actually see examples of their children’s work.二卷IV. 语法填空(10小题,每题1.5分,共15分)阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。
河南省洛阳市八中2013-2014学年高二下学期第二次月考(数学文)
河南省洛阳市八中2013-2014学年高二下学期第二次月考数学(文)试题一、选择题(每小题4分,共40分)1.曲线的极坐标方程θρsin 4=化为直角坐标为( ).A.4)2(22=++y xB.4)2(22=-+y xC.4)2(22=+-y xD.4)2(22=++y x2.已知点P 的极坐标是),1(π,则过点P 且垂直极轴的直线方程是( ).A.1=ρB.θρcos =C.θρcos 1-=D.θρcos 1= 3.已知点M 的极坐标为⎪⎭⎫ ⎝⎛35π,,下列所给四个坐标中能表示点M 的坐标是( ).A.53,-⎛⎝ ⎫⎭⎪πB.543,π⎛⎝ ⎫⎭⎪C.523,-⎛⎝ ⎫⎭⎪πD.⎪⎭⎫ ⎝⎛-355π, 4.若直线的参数方程为12()23x t t y t =+⎧⎨=-⎩为参数,则直线的斜率为( ). A.23 B.23- C.32 D.32- 5.直线3x-4y-9=0与圆:⎩⎨⎧==θθsin 2cos 2y x ,(θ为参数)的位置关系是( ). A.相切 B.相离 C.直线过圆心 D.相交但直线不过圆心6.在参数方程⎩⎨⎧+=+=θθsin cos t b y t a x (t 为参数)所表示的曲线上有B 、C 两点,它们对应的参数值分别为t 1、t 2,则线段BC 的中点M 对应的参数值是( ).7.实数x 、y 满足3x 2+2y 2=6x ,则x 2+y 2的最大值为( ).A.27B.4C.29D.58.直线()的倾斜角为为参数t l t x t y ︒︒+-=+=20sin 220cos 5{:( )A.200B.700C.1600D.1200.率为相切,则双曲线的离心为参数)的渐近线与曲线、已知双曲线θθθ({)0,0(19cos 2sin y 2222+==>>=-x b a by a x A 、2 B 、2 C 、23 D 、332A(,))C(,)310、在极坐标系中,2、、00则ABC 为24ππ--∆( ) A 、正三角形 B 、直角三角形C 、锐角等腰三角形D 、直角等腰三角形二、填空题(每小题4分,共16分)11、圆锥曲线()为参数θθθ⎩⎨⎧==sec 3tan 2y x 的离心率是 。
河南省洛阳市八中2013-2014学年高一物理下学期第二次月考试题新人教版
洛阳第八中学13-14学年第二学期月考高一物理试卷满分:100分 时间:60分钟 (Ⅰ卷 60分)一.选择题(共60分,全对得5分,少选得3分)1.下列关于电现象的叙述中正确的是 ( )A.玻璃棒无论与什么物体摩擦都带正电,橡胶棒无论与什么物体摩擦都带负点B.带电现象的本质是电子的转移,物体得到电子一定显负电性,失去电子显正电性C.电子和质子带电量都是元电荷D.一个带电体的电荷量是元电荷的205.5倍2.关于库仑定律,下列说法正确的是( )A .库仑定律适用于点电荷,点电荷其实就是体积最小的带电体B .根据221rq q k F =,当两个带电体间的距离趋近于零时,库仑力将趋向无穷大 C .带电量分别为Q 、3Q 的点电荷A 、B 相互作用时,B 受到的静电力是A 受到的静电力的3倍D .库仑定律的适用条件是:真空和静止点电荷3. 下列说法正确是( )A .电场强度为零的地方,电势一定为零B .电势为零的地方,电场强度不一定为零C .电场中某点场强方向与放入该点的电荷所受电场力方向相同D .在等量异种电荷形成的电场中,两点电荷连线的中点处场强最大4. 处于静电平衡中的导体,内部场强处处为零的原因是( )A.导体内部无电场B.外电场不能进入导体内部C.所有感应电荷在导体内部产生的合场强为零D.外电场和所有感应电荷的电场在导体内部叠加的结果为零5. 如图所示为半径相同的两个金属小球,A 、B 带有电量相等的电荷,相隔一定距离,两球之间的相互作用力大小是F ,今用第三个半径相同的不带电的金属小球先后与A 、B 两球接触后移开.这时,A 、B 两球之间的相互作用力的大小是(A 、B 两球均可看成点电荷)( ) A.8F B.4F C. 83F D.43F 6.如图所示,实线是一簇未标明方向的由点电荷Q 产生的电场线,若带电粒子q (|Q|>>|q|)由a 运动到b ,电场力做正功。
已知在a 、b 两点粒子所受电场力分别为Fa 、Fb ,则下列判断正确的是 ( )A .无论Q 和q 为何种电荷,都有Fa >FbB.无论Q 和q 为何种电荷,都有φa >φbC .若Q 为正电荷,则q 带正电,pb Pa E E >D .若Q 为负电荷,则q 带负电,pb PaE E >7.一带电油滴在匀强电场E 中从a 到b 的运动轨迹如图中虚线所示,电场方向竖直向下,不计空气阻力.此带电油滴从a 运动到b 的过程中,能量变化情况是( )A .动能减小B .电势能增加C .重力势能和电势能之和减小D.动能和电势能之和增加8. 如图所示,在真空中有两个等量带正电的点电荷,分别置于P、Q两点,O点是它们连线的中点,A、B为P、Q连线的中垂线上的两点,下列说法正确的是()A.连线中点O的场强为零B.中垂线是一个等势面C.将一正电荷q由A点沿中垂线移动到B点,在此过程中q的电势能一定逐渐减少D.将一正电荷q由A点沿中垂线移动到B点,在此过程中q受到的电场力一定逐渐减小9. 如图中虚线所示为静电场的等势面1、2、3、4,相邻的等势面之间的电势差相等,其中等势面3的电势为0.一带正电的点电荷在静电力的作用下运动,经过a、b点的动能分别为20eV和2eV.当这一点电荷运动到某一位置,其电势能变为-8eV时,它的动能应为()A.8eV B.12eV C.16eV D.30eV10. 如图甲所示,在x轴上有一个点电荷Q(图中未画出),O、A、B为轴上三点。
河南省洛阳市八中2013-2014学年高一下学期第二次月考数学(理)试题
河南省洛阳市八中2013-2014学年高一下学期第二次月考数学(理)试题一、选择题(每题5分,共60分)1.如果角α的终边过点(2sin 60,2cos60)︒-︒,则sin α的值等于( )11. . . .22A B C D - 2.已知1sin 1cos 2αα+=-,则cos 1-sin αα的值是 ( ) A .12 B .12- C .2 D .-2 3.函数y =cosx 1-sin 2x +sinx 1-cos 2x +tanx tan 2x的值域是( ) A.{3,-1 } B.{1,3} C.{-3,-1,1} D.{-1,1,3}4.已知角α是第二象限角,且|2cos α|=— cos 2α,则角2α是( ) A .第一象限角 B. 第二象限角 C.第三象限角 D.第四象限角5.若1sin 63πθ⎛⎫-= ⎪⎝⎭,则cos 3πθ⎛⎫+= ⎪⎝⎭( ) A .-79 B .-13 C.13 D.796.下列四个函数中,既是(0,)2π上的增函数,又是以π为周期的偶函数的是( ) A.y =tanx B. |sin |y x = C. cos y x = D. |cos |y x = 7.为得到函数)32cos(π+=x y 的图象, 只需要将函数x y 2sin =的图象向( ) 个单位A. 左平移125πB. 右平移125πC. 左平移65πD. 右平移65π 8.已知()sin()cos()4f x a x b x παπβ=++++(,,,a b αβ为非零实数),(2013)5f =,则(2014)f =( )A .1B .3C .5D .不能确定9.函数)23sin(x y -=π的单调递减区间是( ) A .2,,;63k k k Z ππππ⎡⎤-+-+∈⎢⎥⎣⎦ B .52,2,;1212k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦C .,,;63k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦ D .5,,;1212k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦10.函数y =- 52sin(4x +2π3)的图象与x 轴的多个交点中,离原点最近的一个是( ) A. (- π6,0) B. (- π12,0) C. (π12,0) D. (π6,0) 11.函数)sin(ϕω+=x A y 在一个周期内的图象如下,此函数的解析式为( ) A.)322sin(2π+=x y B .)32sin(2π+=x y C .)32sin(2π-=x y D .)32sin(2π-=x y12. 关于函数()4sin(2),()3f x x x R π=+∈有下列命题:①由12()()0f x f x ==可得12x x -必是π的整数倍;②()f x 的表达式可改写为()4cos(2)6f x x π=-;③()f x 的图象关于点(,0)6π-对称;④()f x 的图象关于直线3x π=对称;⑤()f x 在区间,312ππ⎛⎫- ⎪⎝⎭上是增函数;其中正确的是( ) A .②③⑤ B .①②③ C .②③④ D .① ③⑤二、填空(每题5分,共20分)13.扇形的周长是4,面积是1,则扇形的圆心角α的弧度数是________.14.在区间[2,2]ππ-上满足2cos sin x x =的x 的值有 个 15.__________.16.当7,66x ππ⎡⎤∈⎢⎥⎣⎦时,函数23sin 2cos y x x =--的值域为__________. 答案:13. 14.15. 16.三、简答题(共40分).17.(8分)已知tan()=2πα-,计算(1)ααααcos 2sin cos 2sin -+ (2) ()()()()22223sin 2cos sin 2cos 12sin cos παπαπαπααα+--+-+++.18.(10分)已知α∈(0,π),sin α+cos α= 31 计算(1)sinαcos α (2)sin α-cos α19(10分)已知函数cos 2(0)6y a b x b π=-+>⎛⎫ ⎪⎝⎭的最大值为23,最小值为21- (1)求b a ,的值;(2)已知函数)3sin(4)(π--=bx a x g ,当1)(-≥x g 时求自变量x 的集合.20(本题12分)已知函数R x x x f ∈-=),32sin(3)(π(1)在给定的平面直角坐标系中,利用五点法画函数)32sin(3)(π-=x x f ,[]π,0∈x 的简图;(2)求),32sin(3)(π-=x x f []0,π-∈x 的单调增区间;(3)若方程()f x m =在]0,2[π-上有实根,求m 的取值范围.BBACC BABDC AA 17、(1)0(2)18、(1)(2)19、(1)(2)20、(1) 略(2)(3)。
河南省洛阳八中2013-2014学年高一下学期第一次月考政治试题
河南省洛阳八中2013-2014学年高一下学期第一次月考政治试题一、单项选择题(下列各题的四个选项中,只有一项最符合题意。
每小题2分,共60分)1.我国人民民主专政的本质是A.对绝大多数的公民实行民主 B.对极少数敌人实行专政C.人民当家作主 D.民主具有广泛性和真实性2.关注民生、重视民生、保障民生、改善民生,伴随着“民生”二字成为每年政府工报告的关键词,一系列重大民生政策不断出台,惠及亿万民众,诠释着“权为民所用、为民所系,利为民所谋”的丰富内涵。
政府把民生问题放在首位的根本原因是A.解决民生问题始终是执政党的中心任务B.我国现阶段社会的主要矛盾是民生问题C.我国是人民民主专政的社会主义国家D.民生问题是大多数社会成员最关切的社会问题3.在十一届全国人大代表中,胡小燕等3位农民工当选为中国首批农民工代表,十二届全国人大代表中的农民工代表增加到31位。
农民工当人大代表①体现了我国民主的广泛性和真实性②反映了国家对公民民主权利的尊重③说明我国民主制度不断完善④表明我国社会主义民主是全民民主A.②③④ B.①②③ C.①②④ D.①③④4.台湾一家公司在东南大学一场招聘会上,宣传台湾为“本国”,遭到学生抗议,一位同学指出其错误后,该企业负责人依然不改,在场300余名大学生集体愤然退场。
大学生的做法A.说明国家利益与个人利益是一致的 B.自觉履行了公民的义务C.不利于团结台湾人民,维护国家统一 D.履行了维护国家统一的权利5.下列关于民主与专政关系的说法正确的有①民主与专政相辅相成、互为前提②民主是专政的基础,专政是民主的保障③对一定阶级既实行民主又实行专政④统治阶级的民主意味着对被统治阶级的专政A.①②③B.①③④C.①②④D.②③④6.恩格斯说:“国家无非是一个阶级镇压另一个阶级的机器。
”坚持人民民主专政是社会主义现代化建设的政治保证。
从发扬社会主义民主的角度看,人民民主专政的政治保证作用主要体现在①确保人民当家作主的地位②保证人民依法享有广泛的权利和自由③尊重和保障人权④打击敌对分子和敌对势力A.①②③B.②③④C.①③④D.①②④7.我国公民参与管理国家和管理社会的基础和标志是A.享有生存权和发展权B.行使选举权和被选举权C.行使参与权和决策权D.享有劳动权和受教育权8. 2013年8月16日―24日,江苏省南京市将举办第二届亚洲青年运动会,亚青会期间,民众要展示良好的文明风貌,如果你去南京观赛,应履行A.批评和建议的权利 B.当家作主的权利C.维护国家荣誉和利益的义务 D.国际交流与合作的职能9.公民在法律面前一律平等,是指A.公民享有的权利和义务都是相同的B.公民的社会地位都是相同的C.司法平等和守法平等D.立法平等和执法平等在我国目前7000多万中共党员中,学生党员占了近200万,这绝对是一批新兴的政治力量。
河南省洛阳八中2014-2015学年高一上学期10月月考试题 数学
洛阳八中高一数学月考试卷 2014、10一、选择题:1. 设全集{1,2,3,4,5}U =,{1,3,4}M =,{2,4,5}N =,则()()U U C M C N ⋂=A 、{4}B 、{1,3}C 、{2,5}D 、∅2.设集合M={x ∣y=2x+3,x ∈R},N={y ∣x 2-y=0,x ∈R},则集合M ∩N= A {(-1,1),(3,9)} B {y ∣y ≥0} C. R D {1,9}3. 函数f(x)=2-x +(x -4)0的定义域为( )A 、{x |x >2,且x ≠4}B 、[)()2,44,+∞ C 、[)2,+∞ D 、(]2,∞- 4. 下列各组函数是同一函数的是( ) ①3)5)(3(1+-+=x x x y ,52-=x y ;②111-+=x x y ,)1)(1(2-+=x x y ;③x x f =)(,2)(x x g =; ④()f x =31)(-⋅=x x x F ; ⑤21)2()(x x f =,x x f 2)(2= A .①、② B .②、③ C .④ D .③、⑤5. 集合A 可表示为}1,,{a b a ,也可表示为{2a ,a +b ,0},则的b a 20122012+值为 A 、0 B 、-1C 、1D 、±1 6. 已知⎩⎨⎧<+≥-=)6()2()6(5)(x x f x x x f ,则)3(f 为 ( ) A . 2 B . 3 C . 4 D . 57. 已知函数2)1(2)(2+-+=x a x x f 在区间(]4,∞-上是减函数,则a 范围是A 、(]3,-∞-B 、[)+∞-,3C 、(]3,+∞-D 、[)+∞,38. 已知函数f (x )=⎩⎪⎨⎪⎧2x ,x >0,x +1,x≤0.若f(a)+f(1)=0,则实数a 的值等于( ) A .-3 B .-1 C .1 D .39.若g (x )=1-2x ,()f g x =⎡⎤⎣⎦221x x -(x ≠0),则12f ⎛⎫ ⎪⎝⎭等于( ) A .1 B .3 C .15 D .3010.已知集合A 是函数()f x x=的定义域,集合B 是()f x 的值域,则A B 的子集的个数是( )A .4B .6C .8D .1611. 若一系列函数的解析式相同,值域相同,但其定义域不同,则称这些函数为“同族函数”,那么2y x =,值域为{}1,4的“同族函数”共有( )A .7个B .8个C .9个D . 10个 12. 奇函数()f x 在(0)+∞,上为增函数,且(2)0f =,则不等式()()0f x f x x --<的解集为A (20)(0,2)-, B (2)(0,)-∞-,2C (2)(2)-∞-+∞,, D .(20)(2)-+∞,, 二、填空题:13.函数24++=x x y 的定义域为 . 14. 若)(x f 是一次函数,14)]([-=x x f f 且,则)(x f = _________________.15.已知幂函数)(x f y =的图象过点=)9(),2,2(f 则 .16.若一次函数b ax x f +=)(有一个零点2,那么函数ax bx x g -=2)(的零点是 .三、解答题(每题14分:17.)已知集合{|121}A x a x a =-<<+,{|01}B x x =<<,若A B =∅,求实数a 的取值范围。
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考物理试卷
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考物理试卷注意事项:1. 答题前答题卡内填写好自己的姓名、班级、考号等信息2. 请将答案正确填写在答题卡上分卷I分卷I 注释一、选择题(每小题3分,1-19是单选题;20题是不定项选择题。
)1、下列关于静电除尘的说法中正确的是( )A.进入除尘器后,烟雾中的颗粒被强电场电离而带正电,颗粒向电源负极运动B.除尘器中的空气被电离,烟雾颗粒吸附电子而带负电,颗粒向电源正极运动C.烟雾颗粒带电后,受到竖直向下的电场力而向下运动D.烟雾颗粒被强电场粉碎成更小的颗粒,排到大气中人眼看不到2、关于元电荷和点电荷,下列说法中正确的是()A.元电荷实质上是指电子和质子本身B.所有带电体的电荷量一定等于元电荷的整数倍C.体积很大的带电体一定不能看做点电荷D.点电荷一定是电量很小的电荷3、两个完全相同的金属小球带有电量相等的电荷,相距一定的距离,相互作用力为F,现在用第三个完全相同不带电的小金属球C先跟A接触,再和B接触,然后移去C,则A、B 间的相互作用力为:A. F/8B. F/4C. F3/8D. F/34、一带负电荷的质点,在电场力作用下沿曲线abc从a运动到c,已知质点的速率是递减的.关于b点电场强度E的方向,下列图示中可能正确的是(虚线是曲线在b点的切线)A.B.C.D.5、下列各图中,正确描绘两个等量正电荷电场线的是()6、一充电后的平行板电容器保持两极板的正对面积、间距和电荷量不变,在两极板间插入一电介质,其电容量C和两极板间的电势差U的变化情况是A.C增大B.C减小C.U增大D.U减小7、已知磁敏电阻在没有磁场时电阻很小,有磁场时电阻变大,并且磁场越强阻值越大.为探测磁场的有无,利用磁敏电阻作为传感器设计了如图所示电路,电源的电动势E和内阻r 不变,在没有磁场时调节变阻器R使灯泡L正常发光.若探测装置从无磁场区进入强磁场区(灯泡不会烧坏),则 ( )A.灯泡L变亮B.灯泡L变暗C.电流表的示数变小D.电流表的示数变大8、在如图所示电路中,当滑动变阻器滑片P向下移动时,则()A.A灯变亮、B灯变亮、C灯变亮B.A灯变亮、B灯变亮、C灯变暗C.A灯变亮、B灯变暗、C灯变暗D.A灯变亮、B灯变暗、C灯变亮9、两电阻R1、R2中的电流I和电压U的关系图线如图所示,可知两电阻的大小之比R1:R2等于()A.1:3 B.3:1 C.1:D.:110、关于磁感应强度的下列说法中,正确的是()A.通电导线在磁场中受到安培力越大的位置,则该位置的磁感应强度越大B.磁感线上某一点的切线方向就是该点磁感应强度的方向C.垂直磁场放置的通电导线的受力方向就是磁感应强度方向D.磁感应强度的大小、方向与放入磁场的导线的电流大小、导线长度、导线取向等均无关11、关于通电直导线周围磁场的磁感线分布,下列示意图正确的是12、如图所示,固定的水平长直导线中通有向右电流I,闭合的矩形线框与导线在同一竖直平面内,且一边与导线平行.线框由静止释放,在下落过程中()A.穿过线框的磁通量保持不变B.线框所受安培力的合力为零C.线框中产生顺时针方向的感应电流D.线框的机械能不断增大13、下列关于磁通量的说法,正确的是()A.在匀强磁场中,穿过某一个面的磁通量等于磁感应强度与该面面积的乘积B.磁通量是矢量,其正负表示方向C.磁通量是形象描述穿过某一个面的磁感线条数的物理量D.磁通量越大,磁通量的变化就越快14、如图所示,闭合线圈上方有一竖直放置的条形磁铁,磁铁的N极朝下,当磁铁向下运动时(但未插入线圈内部)( )A.线圈中感应电流的方向与图中箭头方向相同,磁铁与线圈相互吸引B.线圈中感应电流的方向与图中箭头方向相同,磁铁与线圈相互排斥C.线圈中感应电流的方向与图中箭头方向相反,磁铁与线圈相互吸引D.线圈中感应电流的方向与图中箭头方向相反,磁铁与线圈相互排斥15、如图所示,足够长平行金属导轨倾斜放置,倾角为370,宽度为0.5m,电阻忽略不计,其上端接一小灯泡,电阻为1Ω。
河南省洛阳市八中2013-2014学年高一下学期第二次月考化学试题
河南省洛阳市八中2013-2014学年高一下学期第二次月考化学试题一、选择题(每小题只有一个选项....符合题意,每小题2分,共30分。
)1.下列用水就能鉴别的一组物质是A.苯、己烷、四氯化碳B.苯、乙醇、四氯化碳C.硝基苯、乙醇、四氯化碳D.硝基苯、乙醇、乙酸2.既可用鉴别甲烷与乙烯,又可除去甲烷中混有乙烯的最佳方法是A.通入酸性高锰酸钾溶液中B.通入足量溴水中C.一定条件下通入H2D.点燃3.等物质的量的下列物质,在空气中充分燃烧,消耗氧气最少的是()A.乙烯B.乙烷C.乙醛D.乙醇4.下列化学式一定表示一种物质的是()A.CF2Cl2B.C6H12O6C.C12H22O11D.(C6H10O5)n5.将W1 g光亮的铜丝在空气中加热一段时间后,迅速插入下列物质中,取出干燥,如此反复几次,最后取出铜丝、干燥、称得其质量为W2 g。
下列铜丝所插物质与插入前后铜丝的质量关系不正确的是A.石灰水W1<W2B.CO W1= W2C.NaHSO4W1>W2 D.乙醇溶液W1<W26.下列说法正确或符合科学事实的是A.等质量的CO与C2H4体积一定相等B.甲烷、乙醇、乙酸均能发生加成反应C.油脂、淀粉、蛋白质在一定条件下都能发生水解反应D.工业上常用苯的产量衡量一个国家石油化工发展水平7.甲醛(CH2O)、乙酸(C2H4O2)和丙醛(C3H6O)组成的混合物中,氧元素的质量分数是37%,则碳元素的质量分数为A.27% B.28% C.54% D.无法计算8.下列关于常见有机物的说法不正确...的是A.乙烯和苯都能与溴水反应B.乙酸和油脂都能与氢氧化钠溶液反应C.糖类和蛋白质都是人体重要的营养物质D.葡萄糖和乙醛均能和银氨溶液及新制的氢氧化铜悬浊液反应9.丙烯酸的结构简式为CH2=CH—COOH,其对应的性质中不正确的是A.与钠反应放出氢气 B.能与溴水发生取代反应C.与乙醇能发生酯化反应D.发生加聚反应生成高分子化合物10.实验室用乙酸、乙醇、浓H2SO4制取乙酸乙酯,加热蒸馏后,在饱和Na2CO3溶液上面得到无色油状液体,当振荡混合时,有气泡产生,原因是A.产品中有被蒸馏出的H2SO4 B.有部分未反应的乙醇被蒸馏出C.有部分未反应的乙酸被蒸馏出D.有部分乙醇跟浓H2SO4作用生成乙烯11.下列说法正确的是A.碳碳间以单键结合,碳原子剩余价键全部与氢原子结合的烃一定是饱和链烃B.分子组成符合C n H2n+2的烃一定是烷烃C.正丁烷分子中所有原子均在一条直线上D.碳氢原子个数比为1︰3的烃有2种12.下列有机反应中,不属于取代反应的是A .B.2CH3CH2OH+O22CH3CHO+2H2OC.ClCH2CH=CH2+NaOH HOCH2CH=CH2+NaClD.13.在苯环结构中,不存在单双键交替结构,可以作为证据的事实是①苯不能使酸性KMnO4溶液褪色②经测定,苯中碳碳键完全相同,为平面正六边形分子③苯能在一定条件下跟H2加成生成环己烷④苯在FeBr3存在的条件下同液溴可发生取代反应,但不因化学变化而使溴水褪色A.①②③④ B.①②④ C.②③④ D.①③④14、用N A表示阿伏加德罗常数的值,下列叙述中正确的是A.在标准状况下,完全燃烧2.24L辛烷可生成CO2分子数为0.8N AB.常温常压下,30 g乙酸与30 g葡萄糖含有的氧原子数都是N AC.1 mol -OH所含的电子数为17N AD.1 mol Cl2通入足量的NaOH溶液中充分反应转移的电子数为2N A15、0.4 mol乙烯与氯气发生加成反应,然后用加成反应的产物在光照条件下与氯气发生取代反应,则两过程消耗氯气的总物质的量是A.0.4 mol B.0.8 mol C.2 mol D.1 mol二、填空题(本题包括3个题,共20分)16.(8分)已知乳酸的结构简式为CH3CH COOHOH。
河南省洛阳八中2013-2014学年高一下学期第一次月考生物试题
河南省洛阳八中2013-2014学年高一下学期第一次月考生物试题一、选择题(每题2分,共计80分)1.下列属于人体内环境的组成成分的是()①血浆、组织液和淋巴②血红蛋白、O2和葡萄糖③葡萄糖、CO2和胰岛素④激素、唾液淀粉酶和氨基酸A.①③B.③④C.①②D.②④2.下列哪些疾病是由内环境稳态的破坏直接引起的()①心脏病②癌症③糖尿病④尿毒症A.①②B.①③C.②④D.③④3.下图为高等动物的体内细胞与外界环境的物质交换示意图,下列叙述正确的是()A.①、③都必须通过消化系统才能完成B.人体的体液包括内环境和细胞外液C.细胞与内环境交换的④为养料和氧气D.⑥可表述为:体内细胞可与外界环境直接进行物质交换4.在高等动物体内,细胞与内环境之间的物质交换的正确关系是()5.在血浆、组织液和细胞内液中,O2的浓度依次为()A.血浆>组织液>细胞内液B.血浆>组织液=细胞内液C.血浆>组织液<细胞内液D.血浆<组织液=细胞内液6.关于人体内环境中pH调节的叙述,不.正确的是()A.人体血液的pH通常在7.35~7.45之间B.血液中乳酸过多时,就会与NaHCO3发生反应,生成乳酸钠和H2CO3C.血液中Na2CO3过多时,就与H2CO3结合形成NaHCO3D.pH的相对稳定是在神经—体液的调节下独立完成的7.吊针(静脉注射)时,药液进入人体后到发挥作用经过的一般途径是()A.血浆→组织液→淋巴→靶细胞B.淋巴→血浆→组织液→血浆→靶细胞C.血浆→组织液→靶细胞D.组织液→血浆→组织液→靶细胞8.一个人出现组织水肿,其原因可能是()A.血浆中尿素过多B.皮下脂肪积存过多C.血糖含量过少D.血浆蛋白质含量过少9.毛细血管壁细胞生活的内环境是①血液②血浆③淋巴④组织液A.①④B.②③ C.②④ D.①③10.人在发烧时食欲差的最根本原因是()A.胃不能及时排空B.摄入食物未消化C.消化酶活性受影响D.抑制消化酶的分泌11.如图是人体局部内环境示意图。
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考化学试卷
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考化学试卷注意:本试卷分试Ⅰ卷和Ⅱ卷两部分,将第Ⅰ卷选择题答案填在答题卡上。
试卷满分值:100分,考试时间:60分钟。
考生只交答题卷和选择题答题卡。
相对原子质量:第Ⅰ卷(50分)一、单项选择题(本题共10小题,每小题2分,共20分。
每小题只有一个正确....选项)1.多电子原子中,3s、3d、4p轨道能级次序为( )A.3s<3d<4pB.3s>3d>4pC.3s<4p<3dD.无法确定2.在d轨道中电子排布成,而不排成,最直接的根据是( )A.能量最低原理B.泡利原理C.构造原理示意图D.洪特规则3.下列分子或离子中,含有孤电子对最多的是( )A.H2OB.BeCl2C.SiH4D.NH4+4.下列说法中正确的是( )A.乙烯中C=C的键能是乙烷中C—C的键能的2倍B.氮气分子中含有1个σ键和2个π键C.N—O键的极性比C—O键的极性大D.NH4+中4个N—H键的键能不相同5.主族元素原子失去最外层电子形成阳离子,主族元素的原子得到电子填充在最外层形成阴离子。
下列各原子或离子的电子排布式错误的是( )A.Ca2+:1s22s22p63s23p6B.O2-:1s22s22p4C.Cl-:1s22s22p63s23p6D.Ar:1s22s22p63s23p66.已知元素X的基态原子最外层电子排布为ns n-1np n+2,则X元素的原子序数为( )A.9B.10C.15D.177. 对H3O+的说法正确的是( )A.氧原子采取sp2杂化B.离子是正四面体形C.离子中存在配位键D.离子中存在非极性键8.下列哪种物质本身所具有的能量最低 ( )A.HIB.HBrC.HClD.HF9.铵根离子中存在的化学键类型(按离子键、共价键和配位键分类)为( )A.离子键和共价键B.离子键和配位键C.配位键和共价键D.离子键10.下列变化中,不需要破坏化学键的是( )A.干冰气化B.氯化氢溶于水C.水通电分解成氢气和氧气D.加热使氯化钠熔化二、单项选择题(本题共10小题,每小题3分,共30分。
高二数学第一次月考试题
开始 i =1 s =0i =i +1s =s+i i ≤5? 输出s 结束① ② a是否 7 9 8 4 4 4 6 7 9 3 高二数学第一次月考试题一、选择题:1. 高二年级有14个班,每个班的同学从1到50排学号,为了交流学习经验,要求每班学号为14的同学留下来进行交流,这里运用的是( ) A .分层抽样 B .抽签抽样 C .随机抽样 D .系统抽样 2. 五进制数(5)444转化为八进制数是( )A 。
(8)194B.(8)233 C 。
(8)471D.(8)1743. 计算机执行下面的程序,输出的结果是( )a =1b =3 a =a +bb =b a PRINT a ,b ENDA 、1,3B 、4,9C 、4,12D 、4,8 4. 甲,乙两人随意入住两间空房,则甲乙两人各住一间房的概率是 ( )A 。
31B 。
41C 。
21 D 。
无法确定 5. 如下四个游戏盘,现在投镖,投中阴影部分概率最大的是 ( )6. 下图是2008年我校举办“激扬青春,勇担责任"演讲比赛大赛上, 七位评委为某位选手打出的分数的茎叶图,去掉一个最高分和一个最低分后,所剩数据的中位数和平均数分别为 ( )A.85;87 B 。
84; 86 C 。
84;85 D.85;867. 如左图的程序框图(未完成).设当箭头a 指向①时,输出的结果 s =m ,当箭头a 指向②时,输出的结果s =n ,则m +n = ( )A 。
30 B.20 C 。
15 D 。
5 8. 10个正数的平方和是370,方差是33,那么平均数为( )A .1B .2C .3D .49. 读程序甲:INPUT i =1 乙:INPUT i =1000 S =0 S =0 WHILE i <=1000 DOS =S +i S =S +i i =i +l i =i 一1 WEND LOOP UNTIL i <1 PRINT S PRINT SEND END对甲乙两程序和输出结果判断正确的是( )A .程序不同,结果不同B .程序不同,结果相同C .程序相同,结果不同D .程序相同,结果相同10. 已知点P 是边长为4的正方形内任一点,则P 到四个顶点的距离均大于2的概率是( )A 。
河南省洛阳市八中2013-2014学年高一下学期第二次月考英语试题
河南省洛阳市八中2013-2014学年高一下学期第二次月考英语试题满分共120分,时间:90分钟阅读理解(共两节,满分40分)第一节(共15小题,每小题2分,满分30分)AWhen we walk through the city, we all experience a kind of information overload but we p ay attention only to those that are important to us. We don’t stop, we keep our faces expressionless and eyes straight ahead, and in doing so, we are not just protecting ourselves but are avoiding overloading other people as well.We make use of stereotypes (刻板的模式) as convenient ways to make quick judgements about situations and people around us. They may not always be accurate, and they can often be dangerously wrong, but they are used regularly.The problem with the stereotypes is that they restrict experience. By using limited clues to provide us with a rapid opinion of other people or places we may choose to limit our communication. We may decide not to go to certain places because we believe they will not offer something we enjoy.In the city, styles of dress are particularly important with regard to self-presentation. Different groups often use clearly identifiable styles of clothes so that they can be easily recognized. It is becoming increasingly common for brand names to be placed on the outside of clothes, and this labeling makes it easy to send out information about fashion and price instantly, and lets others tell at a distance whether an individual has similar tastes and is a suitable person to associate with.In England, where social grouping or class continues to make social distinctions(区分), clothes, hairstyles, people’s pronunciation and the manner of speaking are all clues to our social group. Class distinctions tend to be relatively fixed, although in the city where greater variety is permitted, they are more likely to be secondary determining factors of friendship and association.1. People walking in cities ignore the surroundings because __________.A. they do not wish to talk to other peopleB. everyone else is expressionlessC. the environment is already familiar to themD. there is too much information to take in2.According to the passage, the main disadvantage of using stereotypes is that they __________.A. are likely to lead us into dangerous situationsB. may make us miss some pleasant experienceC. can rarely be relied onD. make us mentally lazy3. From the passage we may conclude that _________.A. stereotypes can help to understand people fullyB. people are becoming more interested in fashionC. dressing can send messages about individualsD. stereotypes can do more harm than good to people4. It would appear that in England, a person’s class __________.A. might be less important in making friends in a cityB. is mainly determined by his pronunciationC. plays less of a role than it did in the pastD. is something that can be changed easilyBLying in the sun on a rock, the cougar(美洲豹)saw Jeb and his son, Tom before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, making himself look big to the cougar, It worked. The cougar hesitated, ready to attack Jeb, but ready to forget the whole thing, too.Jeb let go of his jacket, grasped Tom and held him across his body, making a cross. Now the cougar’s enemy looked even bigger, and it rose up, ready to move away, but unfortunately Tom got scared and struggled free of Jeb. “Tom, no” shouted his father. But Tom broke and ran and that’s the last thing you do with a cougar. The second Tom broke free, Jeb threw himself on the cougar, just as it jumped from the rock. They hit each other in mid-air and both fell. The cougar was on Jeb in a flash, forgetting about Tom, which was what Jeb wanted.Cougars are not as big as most people think and a determined man stands a chance, even with just his fists. As the cougar’s claws(爪子)got into his left shoulder, Jeb swung his fist at its eyes and hit hard. The animal howled(吼叫)and put its head back. Jeb followed up with his other fist. Then out of the corner of his eye, Jeb saw Tom. The boy was running back to help his father. “Knife, Tom, ” shouted Jeb.The boy ran to his father’s bag, while Jeb started shouting as well as hitting, to keep the cougar’s attention away from Tom. Tom got the knife an d ran over to Jeb. The cougar was moving its head in and out, trying to find a way through the wall Jeb was making out of his arms. Tom swung with the knife, into the cougar’s back. It howled horribly and ran off into the mountains. The whole fight had taken about thirty seconds.5. Why did Jeb pull his jacket open when he saw the cougar?A. To get ready to fightB. To frighten it awayC. To protect the boyD. To cool down6. What do we know about cougars?A. They are afraid of noisesB. They hesitate before they hitC. They are bigger than we thinkD. They like to attack running people7. How did Jeb try to hold the cougar’s attention?A. By keeping shouting and hittingB. By making a wall out of his armsC. By throwing himself on the cougarD. By swinging his fists at the cougar’s eyes8. Which of the following happened first?A. The cougar jumped from the rockB. Tom struggled free of his fatherC. Jeb asked Tom to get the knifeD. Jeb held Tom across his bodyCSome people will do just about anything to save money. And I am one of them. Take my family’s last vacation. It was my six-year-old son’s winter break form school, and we were heading home from Fort Lauderdale after a weeklong trip. The flight was overbooked, and Delta, the airline, offered us $400 per person in credits to give up our seats and leave the next day. I had meetings in New York,So I had to get back. But that didn't mean my husband and my son couldn't stay. I took my nine-month-old and took off for home.The next day, my husband and son were offered more credits to take an even later flight. Yes, I encouraged—okay, ordered—them to wait it out at the airport, to "earn" more Delta Dollars. Our total take $1,600. Not bad, huh?Now some people may think I'm a bad mother and not such a great wife either. But as a big-time bargain hunter, I know the value of a dollar. And these days, a good deal is something few of us can afford to pass up.I've made living looking for the best deals and exposing (揭露)the worst tricks. I have been the consumer reporter of NBC's Today show for over a decade. I have written a couple of books including one titled Tricks of the Trade A Consumer Survival Guide. And I really do what I believe in.I tell you this because there is no shame in getting your money’s worth. I’m also tightfisted when it comes to shoes, clothes for my children, and expensive restaurants. But I wouldn't hesitate to spend on a good haircut. It keeps its shape longer, and it's the first thing people notice. And I will also spend on a classic piece of furniture. Quality lasts.9. Why did Delta give the author's family credits?A. They took a later flight.B. They had early bookings.C. Their flight had been delayed.D. Their flight had been cancelled.10. What can we learn about the author?A. She rarely misses a good deal.B. She seldom makes a compromise.C. She is very strict with her children.D. She is interested in cheap products.11. What does the author do?A. She's a teacher.B. She's a housewife.C. She's a media person.D. She's a businesswoman.12. What does the author want to tell us?A. How to expose bad tricks.B. How to reserve airline seats.C. How to spend money wisely.D. How to make a business deal.CWelcome to International Student Insurance (保险), the number one online destination for international student health insurance and travel insurance plans. Here you will find information on the best international health, medical and student insurance plans to fit the needs of the international studentWe offer student insurance plans forAt International Student Insurance, we pride ourselves on offering the best international student insurance plans to students from all around the world. Our plans are recognized around the world as providing high-quality service at low prices —so please feel free to browse our site and learn more about what we offer.We also offer many ways to help you in your buying decision. Please also feel free to contact (联系) our friendly customer support team who are on hand either by e-mail or phone.You don’t have to be a student to buy one of our plans. Non-students can visit our sister site International Citizens —International Health Insurance.If you are looking for an international plan to fit the need of your group of international students, please visit our group insurance center for more.13. Any student who wants to learn about the insurance plans can click the following EXCEPT ______.A. Student SafetyB. International CitizensC. Atlas InternationalD. Student STM14. The underlined word “browse” (in Paragraph 4) means “______”.A. look afterB. look forC. look throughD. look at15. Where can we probably read this passage?A. In a newspaper.B. On the Internet.C. In a magazine.D. In a story book.16. The group insurance center is for ______.A. every studentB. groups of international studentsC. American studentsD. single international student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。
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考生物试卷
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考生物试卷一、选择题(1-26每小题1.5分,27—36每小题2分,共59分)1.下列有关原核细胞的描述,错误的是()A.没有核模,遗传物质集中的区域称为拟核 B.DNA为裸露的环状分子,具有双螺旋结构C.蓝藻有细胞壁,但其化学成分与植物细胞壁不同D.蓝藻是自养生物,因为其叶绿体可进行光合作用2.科学家培育出一种类似于细菌的“人造细胞”。
这种简单的“细胞”并不是真正的生命体,不能分裂和分化,但能连续数日生成蛋白质。
下列关于蛋白质的叙述中,正确的是A.蛋白质是肽链以一定方式形成的具有复杂空间结构的高分子化合物B.每种蛋白质都由20种氨基酸组成C.每种蛋白质都含有C、H、O、N、S、Fe等元素D.氨基酸种类、数量和排列顺序都相同的蛋白质是同一种蛋白质3.关于生物体内有机化合物所含元素的叙述,错误的是( )A.叶绿素含有镁元素 B.血红蛋白含有铁元素C.脱氧核糖含有磷元素 D.胰岛素含有碳元素4.有三个核酸分子,经分析可知,共有五种碱基、八种核苷酸、四条核苷酸链,它们是( ) A.一个DNA分子,两个RNA分子 B.三个DNA分子C.两个DNA分子,一个RNA分子 D.三个RNA分子5.某同学进行的生物学知识的总结中,正确的是( )A.每种生物体内都有两种核酸,但噬菌体、蓝藻、酵母菌的遗传物质都是脱氧核糖核酸B.核糖体在真核细胞与原核细胞中具有不同的功能C.多细胞生物体都是由一个受精卵经过细胞的增殖和分化发育而成D.细胞中绝大多数需要能量的生命活动都是由三磷酸腺苷直接提供能量的6.可以作为硝化细菌碳、氮及能量的物质依次是()A.含碳有机物、氨、光B.含碳无机物、氮、氮C.含碳有机物、氨、氨 D.含碳无机物、氨、氨7.关于果醋制作的叙述错误的是( )A.从细胞结构看,醋酸杆菌是单细胞原核生物B.醋酸菌对氧气的含量敏感,因此其细胞呼吸方式为有氧呼吸,场所为细胞质基质和线粒体C.醋酸杆菌的遗传物质是DNAD.当缺少糖时,醋酸菌将乙醇变为乙醛,再将乙醛变为醋酸8.在果酒、泡菜和腐乳制作过程中,都要防止微生物污染,下列有关叙述不正确...的是( ) A.腌制泡菜的过程中密封不严,会导致泡菜腐烂变质B.在腌制腐乳配制卤汤时加入适量的酒可以抑制微生物的生长C.利用自然菌种发酵制果酒时,要将封有葡萄汁的发酵瓶进行灭菌D.将长满毛霉的豆腐放在瓶中,要逐层加盐且接近瓶口的盐要厚些9.下列关于生物大分子的叙述错误的是( )A.由M个氨基酸构成的一个蛋白质分子,含N条肽链,其中Z条是环状肽链,这个蛋白质分子完全水解共需要M-Z-N个水分子B.在小麦细胞中由A、G、T、U四种碱基参与构成的核苷酸种类有6种C.质量相同的糖原和脂肪氧化分解所释放的能量是不同的D.细胞中氨基酸种类和数量相同的蛋白质不一定是同一种蛋白质10.在玫瑰精油提取过程中,依次用到清水、NaCl、无水Na2SO4,它们的作用分别是( ) A.溶解、萃取、除水 B.蒸馏、萃取、除颗粒杂质C.蒸馏、油水分层、除水 D.溶解、油水分层、萃取11.下列有关从胡萝卜中提取胡萝卜素的描述中,错误的是( )A.因胡萝卜素为脂类物质,所以在从胡萝卜中提取胡萝卜素时,常用有机溶剂B.从胡萝卜中提取胡萝卜素常用萃取法,其主要步骤为粉碎→干燥→萃取→浓缩→过滤C.在胡萝卜颗粒加热干燥过程中,应严格将温度和时间控制在一定范围内,因为温度过高或时间过长会导致胡萝卜素分解D.一般情况下,提取胡萝卜素时,提取效率与原料颗粒含水量成反相关关系12.下列有关细胞的组成成分、结构及其功能的叙述,正确的是( )A.哺乳动物成熟的红细胞无线粒体一定不能进行细胞呼吸B.自然界生物体内所有细胞中核糖体的形成都与核仁密切相关C.细菌细胞中存在既含有蛋白质又含有核酸的结构D.洋葱的根尖细胞中无叶绿体,所以用根尖细胞不能培养出含叶绿体的植物体13.水在细胞的生命活动中具有非常重要的生理功能,下列有关叙述正确的是( ) A.不同种生物细胞的自由水和结合水的比值相同,它们的代谢强度也相同B.水分过多与水分过少对生物新陈代谢活动的影响相同C.线粒体、核糖体、中心体等在其活动中都可以产生水D.葡萄糖等有机物在有氧呼吸过程中能产生水14.下列叙述正确的是( )①核酸②蛋白质③染色体(质)④液泡⑤叶绿体⑥线粒体⑦核膜⑧核糖体⑨细胞壁A.①②③⑧在乳酸菌、酵母菌、噬菌体内都存在 B.①②⑧⑨在噬菌体、烟草细胞内都存在C.衣藻、蓝藻的细胞中都存在①②⑤⑧ D.①~⑤在衣藻体内都存在15.下列关于原核生物和真核生物的叙述,正确的是()A. 原核生物细胞不含线粒体,不能进行有氧呼吸B.真核生物细胞只进行有丝分裂,原核生物细胞只进行无丝分裂C.真核生物以DNA为遗传物质,部分原核生物以RNA为遗传物质D. 真核生物细胞具有细胞膜系统(生物膜系统),有利于细胞代谢有序进行16.如图为电子显微镜视野中观察到的某细胞的一部分。
河南省洛阳市八中2013-2014学年高二下学期第二次月考英语试题
河南省洛阳市八中2013-2014学年高二下学期第二次月考英语试题一卷(满分70分)一阅读理解(满分30分)AEven small cuts can become infected if they are left untreated. Any break in the skin can let bacteria (细菌) enter the body. But taking good care of any injury that breaks the skin can help prevent an infection.Medical experts say the first step in treating a wound is to use clean water. Lake or ocean water should not be used. To clean the area around the wound, experts suggest using a clean cloth and soap. They say there is no need to use products like peroxide (过氧化氢).It is important to remove all dirt and other material from the wound. After the wound is clean, use a small amount of antibiotic (抗生素的) cream. They also help to keep the surface of the wound from becoming dry. Finally, cover the cut with a clean bandage while it heals. Change the bandage daily and keep the wound clean. As the wound heals, inspect for signs of infection including increased pain, redness and fluid around the cut. A high body temperature is also a sign of infection. If a wound seems infected, let the victim rest. Physical activity can spread the infection. Seek help from a doctor.For larger wounds, or in case bleeding does not stop quickly, use direct pressure. Place a clean piece of cloth on the area and hold it firmly in place until the bleeding stops or medical help arrives. Direct pressure should be kept on a wound for about twenty minutes. Do not remove the cloth if the blood drips through it. Instead, put another cloth on top and continue pressure. Use more pressure if the bleeding has not stopped after twenty minutes. If the bleeding still does not stop, send for a doctor immediately.1. To treat a wound, you should NOT ______.A. clean it with sea waterB. clean the dirt around itC. cover it with a clean clothD. use peroxide2. What should a patient with a wound do if he has a high body temperature?A. Change the bandage daily and keep the wound clean.B. Put a small amount of antibiotic cream onto the wound.C. Do nothing as it’s not serious.D. See a doctor as soon as possible.3. The underlined word “victim” in Paragraph 3 probably refers to “______”.A. woundB. painC. bandageD. patient4. Which is the RIGHT order in dealing with large wounds or bleeding?a. Put another cloth on top.b. Cover the wound with a clean cloth.c. Hold the wound tightly.d. Wash the cut with running water.e. Send for a doctor if it is needed.A. a, b, c, dB. b, c, a, eC. d, b, c, aD. c, b, a, eBThe US space shuttle Discovery’s safe landing is an obvious comfort to NASA, which was forced to pause construction of the half-built space station three years ago when the shuttle Columbia broke up upon re-entry into the atmosphere.After landing, shuttle commander Steve Lindsey inspected the spacecraft and declared it free of da mage after its long journey. “This is my fourth flight, and I’ve never seen a vehicle that looked as clean as this one did.”That is important to NASA, because it worked more than three years to ensure that shuttles suffer as little damage as possible.NASA chief Michael Griffin attributes Discovery’s success to the new measures they had taken and a bit of luck.“This is as good a mission as we’ve ever flown, but we’re not going to get overconfident,” he said. “We have to take it flight by flight.”During Discovery’s two-week flight, the orbiter carried a third crew member to the space station, which has had only two since Columbia’s accident. It also hauled up new supplies and equipment, and its crew members made repairs to station system s critical to continuing the outpost’s construction. Michael Griffin said, “So with this flight, we are ready to get on with construction, and we will do just that.”Station construction restarts late next month, when the shuttle Atlantis is to deliver a pair of solar energy panels, new batteries and other components.Griffin points out that shuttle flights are always risky and that station assembly (装配) missions are the most complicated that shuttles fly. He says only 16 shuttle flights remain before the fleet is retired in 2010, and more orbiter troubles could be ruinous for the space station’s construction schedule.“We don’t have any leeway (松懈),”he said. “We have just enough shuttle flights left to do the job. So, we can’t afford to mess up.”5. From the passage, we learn that __________.A Steve Lindsey has travelled four times in spaceB. it took NASA less than three years to ensure that shuttles would suffer little damageC the shuttle Discovery forced NASA to pause construction of the space stationD. Discovery’s successful flight was due to luck6. What do we know about the shuttle Discovery from the passage?A. It broke into pieces on re-entry into the atmosphere.B. Its successful flight means NASA can continue constructing the space station.C. It sent solar energy panels and new batteries to the station.D. It carried two crew members to the space station.7. It can be inferred from the passage that ______.A. Discovery is the worst damaged shuttle after a flight that Michael Griffin has ever seenB. there will be many other shuttle flights in the near futureC. the space station construction will be continued soonD. the crew members haven’t repaired the space station8. What would be the best title for this passage?A. Space station construction to be continued.B. Space flight accident avoided again.C. Space shuttle Discovery lands safely.D. The space shuttle Discovery’s two-week flight.CBurns can be caused by fire, the sun, chemicals, heated objects or fluids, and electricity. They can be minor problems or life-threatening emergencies. Distinguishing a minor burn from a more serious burn involves determining the degree of damage to the tissues of the body. If you are not sure how serious the burn is, seek emergency medical help.First-degree burns are those in which only the outer layer of skin is burned. The skin is usually red and some swelling (肿大) and pain may occur. Unless the burn involves large portions of the body, it can be treated at home.Second-degree burns are those in which the first layer of skin has been burned through and the second layer of skin is also burned. In these burns, the skin reddens intensely and blisters (水泡) develop. Severe pain and swelling also occur. Second-degree burns require medical treatment.Third-degree burns are the most serious and involve all layers of skin. Fat, nerves, muscles, and even bones may be affected. Areas may be charred black or appear a dry white. If nerve damage is substantial, there may be no pain at all. These burns require emergency medical attention.Follow these steps when treating minor burns at home1) If the skin is not broken, run cool water over the burn for several minutes.2) Cover the burn with a sterile (消过毒的) bandage or clean cloth.3) Take aspirin to relieve any swelling or pain.Seek emergency treatment immediately for major burns. Before an emergency unit arrives, follow these steps1) Remove the person from the source of the burn (fire, electrical current, etc.).2) If the person is not breathing, begin mouth-to-mouth resuscitation (人工呼吸) immediately.3) Remove all clothing to stop further burning. If the clothing is stuck to the burn, do not attempt to remove it.4) Cover the burned area with a cool, moist, sterile bandage or clean cloth. Do not place any creams, ointments (药膏) or ice on the burned area or break blisters.5) Monitor the patient for signs of shock, and treat accordingly.9. The underlined sent ence in the first paragraph probably means “______”.A. They can be dangerous if you don’t treat them seriouslyB. They range from slight burns to deadly onesC. They seldom cause deaths even if not treated properlyD. They usually cause deaths if not treated properly10. Burns are divided into different degrees according to _______.A. what kind of treatment they needB. what kind of tissue of the body is damagedC. whether there is pain and what degree of pain there isD. which layer of skin is burned11. From the passage we learn that _______.A. if there is severe pain, then you need medical treatmentB. first-degree burns don’t require medical treatmentC. burns without pains can be treated at homeD. the larger the swelling is, the more serious it is12. It can be inferred from the passage that ______.A. you shouldn’t cover the burn with a bandage or cloth if it is severeB. you shouldn’t move the person unless you know how to do first aidC. you shouldn’t run cool water over the burn if the skin is b rokenD. you shouldn’t place any wet towels on the burned areaDFarmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature. One important form of soil conservationis the use of windbreaks.Windbreaks are barriers (屏障) formed by trees and other plants with many leaves. Farmers plant them in lines around their fields. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging crops. They are very important for growing grains, such as wheat.There have been studies done on windbreaks in parts of West Africa, for example. They found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection.However, windbreaks seem to work best when they allow a little wind to pass through. If the wall of trees and plants stops wind completely, then violent air motions will take place close to the ground. These motions will lift soil into the air where it will be blown away.For this reason, a windbreak is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line.There should be at least two lines in each windbreak. One line should be large trees. The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for windbreaks.13. What is a windbreak according to the passage?A. A windbreak is a concrete wall to prevent the strong winds.B. A windbreak is a wood with different kinds of trees.C. A windbreak is a wall of trees to hold soil in place.D. A windbreak is a wall of wind to fight wind from the opposite way.14. When can windbreaks be most effective?A. The trees are planted one by one.B. The trees and plants grow in a line.C. The trees grow as high as they can.D. Windbreaks allow a little wind to blow through.15. Which of the following statements is NOT true?A. A windbreak is one of the best forms of soil conversation.B. A windbreak is very good for growing grains such as wheat.C. One line of trees is enough for soil protection.D. Locally grown trees and plants are the top choice for a windbreak.二完形填空(满分30分)Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to __16__ in order to pay the high tuition for my brother and me. They don’t act in the __17__ ways that I read in books or I see on TV. In their opinion, “I love you” is too __18__ for them to say. Sending flowers to each other on Valentine’s Day is even more out of __19__.One day, my mother was sewing(缝制)a quilt. I sat down beside her. “Mom, I have a question to ask you. Is there __20__ between you and Dad?” I asked her in a very low voice. She didn’t answer immediately. She __21__ her head and continued to sew the quilt.I was very worried because I thought I had _22_ her. I was _23__ and I didn’t know what I should do. But at last I heard my mother say the followingwords“Susan,” she said thoughtfully, “Look at this thread.Sometimes it __24_, but most of it disappears in the quilt. The thread really makes the quilt __25__. If life is a quilt, then love should be a thread.It can hardly be seen __26_, but it’s really there. Love is __27__.”I listened carefully but I __28__ her until the next spring. At that time, my father suddenly __29_seriously. My mother had to stay with him in the hospital for a month. When they returned from the hospital, they both looked __30 _. It seemed both of them had had a serious illness. After they were back, every day in the morning and dusk, my mother helped my father __31__ on the country road.“Dad, how are you feeling now?” I asked him one day.“Susan, don’t __32__ me.” he said gently. “To tell you the truth, I just like walking with your mom.”__33__ his eyes, I know he loves my mother deeply.Once I thought love meant flowers, gifts and __34__. But from this experience, I understand that love is just __35__ in the quilt of our life. Love is inside, making life strong and warm.16.A.keep fit B.rise early C.earn money D.collect fortune 17.A.magic B.romantic C.fantastic D.attractive 18.A.simple B.easy C.relaxing D.luxurious 19.A.the question B.question C.reach D.control 20.A.feeling B.love C.quarrel D.smile 21.A.raised B.shook C.nodded D.bowed 22.A.hurt B.injured C.wounded D.harmed 23.A.in great surprise B.in a great embarrassment C.with deep depression D.at extreme sorrow 24.A.happens B.comes about C.appears D.occurs 25.A.warm and soft B.hot and hardC.thin and cool D.strong and durable26.A.somewhere and sometime B.anywhere or anytime C.more or less D.here and there27.A.inside B.outside C.faraway D.nearby 28.A.could believe B.couldn’t understandC.wouldn’t recognize D.might know29.A.got sick B.got stuck C.threw up D.became disabled 30.A.quite healthy B.very pale C.fairly red D.much surprised 31.A.jump high B.go hurriedly C.run fast D.walk slowly 32.A.think about B.talk with C.worry about D.laugh at 33.A.Reading B.Seeing C.Saying D.Writing 34.A.fresh roses B.gold ring C.sweet kisses D.beautiful jewelry 35.A.a thread B.a needle C.the cloth D.the cotton三七选五(满分10分)Everyone knows that the Frenchmen are romantic, the Italians are fashionable and the Germans are serious. Are these just stereotypes or is there really such a thing as national character? And if there is, can it affect how a nation succeed or fail?At least one group of people is certain that it can. A recent survey of the top 500 entrepreneurs (企业家) in the UK found that 70% felt that their efforts were not appreciated by the British public. Britain is hostile (敌意的) to success, they said. It has a culture of jealousy(嫉妒). 71 Jealousy is sometimes known as the “green –eyed monster” and the UK is its home.Scientists at Warwich University in the UK recently tested this idea. They gathered a group of people together and gave each an imaginary amount of money.72 Those given a little were given the chance to destroy the large amount of money given to others – but at the cost of losing their own. Two thirds of the people tested agreed to do this.73 . But there is also opposite evidence. The Organization for Economic Cooperation and Development recently reported that the UK is now the world’s fourth largest economy. That is not bad for people who are supposed to hate success. People in the UK also work longer hours than anyone else in Europe. So the British people are not lazy, either.“It is not really success that the British dislike,” says Carey Cooper, a professor of management at the University of Manchester Institute of Science and Technology. “It’s people u sing their success in a way that seems proud or unfair or which separates them from their roots.”74 They set out to do things in their way. They work long hours. By their own efforts they become millionaires. 75 .It hardly seems worth following their example. If they were more friendly, people would like them more. And more people want to be like them.A. This seems to prove that the entrepreneurs were right to complain.B.The one who owns most money in the end is the winner.C.As a result, the survey said, entrepreneurs were “unloved, unwanted and misunderstood.”D.It is not true that British people are born jealous of others` success.E. Some were given a little, others a great deal.F. But instead of being happy they complain that nobody loves them.G. Perhaps it is the entrepreneurs who are the problem.二卷(满分50分)班级:_________ 姓名:___________ 考号:___________四语法填空(每空1.5分,满分15分)One Sunday morning in August I went to local music festival. I left it early because I had an appointment__1__(late) that day. My friends walked me to the bus stop and waited with me__2__the bus arrived. I got on the bus and found a seat near the back, and then I noticed a man__3__(sit) at the front. He__4__(pretend) that a tiger toy was real and giving it a voice. He must be__5__(mental) disabled.Behind him were other people to__6__he was trying to talk, but after some minutes__7__walked away and sat near me, looking annoyed.I didn’t want to be laughed at for talking to him but I didn’t like leaving him__8__his own either. After a while I rose from my seat and walked to the front of the bus. I sat next to the man and introduced myself. We had__9__amazing conversation. He got off the bus before me and I felt very happy the rest of the way home. I’m glad I made a choice. It made__10__of us feel good.答案:1. __________2. __________ 3. __________4. ___________ 5. __________6. __________7. __________8. __________9. __________ 10. __________五短文改错(满分10分;严格按照规范格式作答。
河南省洛阳市八中2013-2014学年高一下学期第二次月考生物试题
河南省洛阳市八中2013-2014学年高一下学期第二次月考生物试题一、选择题(每题2分,共60分)1.下列属于种群的是()A.一个湖泊中的全部鱼苗、小鱼和大鱼 B.校园中的所有乔木C.棉田中由幼蚜、有翅和无翅成熟蚜等组成的全部棉蚜D.一座山上的大型黑蚂蚁和小型黄蚂蚁2.一块农田中有豌豆、杂草、田鼠和土壤微生物等生物,其中属于寄生关系的是()A.田鼠和杂草B.豌豆和杂草C.豌豆和其根中的根瘤菌D.细菌和其细胞内的噬菌体3.下列选项中,不属于对人口数量特征描述的是()A.我国的人口将逐渐步入老龄化阶段 B.2010年某市人口出生率为121%C.人口分布不均匀 D.某市男女性别比例严重失调)4.如图是有关种群特征的概念图,有关分析错误的是(A.①表示种群密度,是制约种群增长的因素之一 B.春运期间,北京的人口数量变化主要取决于④⑤ C.预测种群数量变化的主要依据是⑥ D.利用人工合成的性引诱剂诱杀害虫,破坏了⑥5右图表示某种野兔进入某草原后的种群增长情况,Array对该图的叙述正确的是()A.AB段兔群数量较少的原因是性别比例失调B.BC段兔群的年龄组成为稳定型C.CD段兔群不存在生存斗争D.DE段兔群的增长率几乎为06.某研究机构对某区域的一种田鼠进行了调查,所调查样方的总面积为2hm2(1hm2=10000m2),统计所捕获的鼠数量、性别等,进行标记后放归;3日后进A.此调查方法可以用调查土壤中小动物物种的丰富度B.田鼠在被捕捉过一次后更难捕捉,统计的种群密度比实际低C.综合两次捕获情况,该田鼠种群的性别比例(♀/♂)约为7∶2D.该地区田鼠的平均种群密度约为125只/hm 27.下图为某天鹅种群数量增长的“J ”型曲线和“S ”型曲线。
若不考虑迁入和迁出,下列有关叙述不正确的是 ( )A.建立自然保护区,改善其栖息环境,可使K 值提高B.对该种群密度的取样调查可以采用样方法和标志重捕法C.bc 段种群增长速率逐渐下降,出生率大于死亡率D.比较曲线Y 与曲线X ,表明自然状态下种群无法超出理想状态下的最大增长速率8.若某生态系统有四种生物,并构成一条食物链a →b →c →d ,在某一时间分别测得这四种生物a 、b 、c 、d 所含的有机物总量分别为M l 、M 2、M 3和M 4。
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考历史试卷
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考历史试卷(2014、6)一、选择题(每题2分,共60分)1.近代史学家王国维在《殷周制度论》中说:“欲观周之所以定天下,必自其制度始矣。
周人制度之大异于商者,一曰‘立子立嫡’之制,由是而生宗法及丧服之制,并由是而有封建子弟之制、君天子臣诸侯之制;二曰庙数之制;三曰同姓不婚之制。
此数者,皆周之所以纲纪天下。
”其中“封建子弟之制、君天子臣诸侯之制”是( )A.王位世袭制B.分封制 C.行省制度D.郡县制2.《汉书》载:“偃说上曰:‘愿陛下令诸侯得推恩分子弟,以地候之。
彼人人喜得所愿,上以德施,实分其国,不削而稍弱矣。
’于是上从其计。
”这一记载反映出汉初统治者()A.推行群国并行制B.强化君主专制C.加强中央集权D.解决土地兼并3.“严密的行政、控制和告诫仍都需要,因为不讲人情的选拔制原则——虽然它始于汉制——与渗透在儒家伦理中的家族和个人联系背道而驰”。
(《剑桥中国史》)材料所述的“选拔制”是( )A.先秦的世袭制B.汉代的察举制C.汉武帝时的刺史制度 D.隋唐的科举制4.“经济上的暴力强制”是近代历史上外国对华关系的一个重要特征。
就连外国人也承认在华洋商“个个都是大恶棍”,美国公使承认:“我们的国旗曾经用庇护在中国的所有流氓。
”外国政府“庇护”在华外国人所依据的是( )A.永久居住权 B.海关管理权 C.领事裁判权 D.片面最惠国待遇5.目前全国共有翼王纪念亭台五座,分布于广西、四川、江西、重庆等省市。
位于广西贵港市的翼王亭,亭上有石达开所作的对联“忍令上国衣冠沦诸夷狄,相率中原豪杰还我河山”。
后,李宗仁为该亭题写了“还我河山”的横匾。
下列有关说法不正确的是( ) A.“还我河山”充分表现了石达开的英雄气魄B.石达开把推翻清王朝统治作为其主要奋斗目标C.抗击外国侵略,挽救民族危亡是石达开参加太平天国运动的主要动机D.石达开的民族意识是狭隘的6.清初著名诗人陈元孝过崖山,于南宋陆秀夫负帝投海处题诗一首,中有“山水萧萧风更吹,两崖波浪至今悲”之句。
河南省洛阳市八中2013-2014学年下学期高一年级第二次月考语文试卷
河南省洛阳市八中2013-2014学年下学期高一年级第二次月考语文试卷(共120分)第一卷(客观题,共36分)一、基础知识(每题3分,共18分)1.下列各组词语中,加点字的注音全对的一项是( )A.半晌.(shǎnɡ)伺.候(sì)虐.待(nüâ) 侍婢.(bì)B.萧瑟.(sâ) 料峭.(qiào) 蓑.衣(suō)拍遍.(b iàn)C.纶.巾(lún) 狼狈.(bâi) 沧.桑(cānɡ)还酹.(lâi)D.天堑.(qiàn) 羌.管(jiánɡ) 参差.(cī) 涔涔..(chãn)2.下列词语中有错别字的一项是( )A.动地惊天顺水推船错勘贤愚两泪涟涟B.毛骨悚然雨霖铃羌管弄晴良晨美景C、舞榭歌台金戈铁马寻常巷陌玉簪螺髻D.栏杆拍遍晚来风急雄姿英发恣行无忌3.下列各句中加点成语使用正确的一项是()A.多利之死,说明克隆动物的寿命还存在问题,将尚不成熟的克隆技术用于人类,实属暴殄天物....的犯罪行为。
B.对这两支球队之间多年的积怨,球迷们早已讳莫如深....,无需赘言;究竟哪队技高一筹,今晚比赛可见分晓。
C.听说此次软件开发大赛强手如林,王刚心里打起了退堂鼓:自己的基本技能虽然过硬,但身无长物....,如何取胜?D.基层干部要多为群众办实事,不能说得好听而没有行动,空头支票....开多了,党在群众心中的威信就会受损。
4.下列句子中,没有语病的一句是()A. 笔记本电脑充分显示了快捷、稳定、方便而成为各种赛事新闻报道的重要工具。
B. 那些“磨脑子”的作品已离我远去,那些浅薄的东西,虽然被投机商大肆渲染,却为我不再受骗。
C. 作者为了使作品情节曲折、生动,牵肠挂肚,常常在戏剧、电影或其他文学作品中设置一系列悬念。
D.我们应该承认,有时候一时孟浪,往往反而可以做出一些为我们深思熟虑所做不成功的事。
河南省洛阳八中2013-2014学年高一下学期第一次月考地理试题
河南省洛阳八中2013-2014学年高一下学期第一次月考地理试题一、第Ⅰ卷(选择题2分×30题)读世界人口变化趋势图,完成1~2题。
1.世界人口增长最快的时期在( )A.产业革命后B.第一次世界大战后C.第二次世界大战后D.20世纪70年代后2.关于各阶段人口增长趋势原因,正确是()A.各阶段人口的增长主要是由生产力的发展水平决定的,与其他因素无关B.人口增长趋势的变化除受社会生产力的发展水平制约外,也与国家的人口政策有关C.人口增长趋势的变化主要取决于世界各国的人口政策D.人口增长趋势的变化受自然条件的影响较大读人口增长示意图,完成3~4题。
3.与当前我国人口增长模式相符的国家是() A.① B.② C.③ D.④4.下列关于④类国家人口问题现状的叙述,正确的是 ( )A.人口老龄化问题日趋严重,老龄人口增多B.青壮年劳动力过剩,就业压力过大C.人口素质偏低,教育压力过大D.城市人口比重过高,与经济发展不相适应甲市某年户籍人口出生9.67万人,出生率0.699%;死亡10.7万人,死亡率为0.773%.甲户籍人口这种自然增长态势已持续14年。
下图显示四个地区的人口出生率和死亡率,据此完成5~6题5.甲市可能是 ( )A.西宁B.延安C.上海D.广州6.①②③④四个地区中,人口再生产与甲市处于同一类型的地区是 ( )A.① B.② C.③ D.④读图,完成7~8题。
7.若此图表示第二次世界大战后世界人口迁移的主要方向,则该图可能表示 ( )A.从北美迁入拉美 B.从亚洲迁往拉美C.从非洲迁往西亚 D.从欧洲迁往亚洲8.若此图表示近年我国民工流动主要方向,则甲、乙可能分别表示 ( )A.四川、广东 B.湖北、重庆C.河北、山东 D.新疆、内地我国黑河至腾冲一线形象地反映了我国“东多西少”的人口宏观分布格局,被地理学界称为“胡焕庸线”。
半个多世纪过去了,我国人口分布的宏观格局不仅没有变化,反而“东多西少”的现象更加突出。
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河南省洛阳八中2013-2014学年高二下学期第一次月
考数学(文)试题
一、选择题:本大题共10小题,每小题4分,共40分.在每小
题给出的四个选项中,只有一项是符合要求的.
1.若复数3i z =-,则z 在复平面内对应的点位于( ).
A .第一象限
B .第二象限
C .第三象限
D .第四象限 2.用演绎法证明函数3y x =是增函数时的小前提是( ).
A .增函数的定义
B .函数3y x =满足增函数的定义
C .若12x x <,则12()()f x f x <
D .若12x x >,则12()()f x f x > 3
“
按照上面的规律,第n 个“金鱼”图需要火柴棒的根数为( ). A .62n - B .82n - C .62n + D .82n +
4.有下列关系:①人的年龄与他(她)拥有的财富之间的关系;
②曲线上的点与该点的坐标之间的关系; ③苹果的产量与气候之间的关系;
④森林中的同一种树木,其横断面直径与高度之间的关系,
其中有相关关系的是( ).
A .①②③
B .①②
C .②③
D .①③④ 5.在线性回归模型y bx a e =++中,下列说法正确的是( ).
A .y bx a e =++是一次函数
B .因变量y 是由自变量x 唯一确定的
C .因变量y 除了受自变量x 的影响外,可能还受到其它因素的影
响,这些因素会导致随机误差e 的产生
D .随机误差e 是由于计算不准确造成的,可以通过精确计算避
免随机误差e 的产生
6.某单位为了了解用电量y (千瓦时)与气温x (℃)之间的关系,随机
统计了某
-4℃时,用电量约为( ).
A .58千瓦时
B .66千瓦时
C .68千瓦时
D .70千瓦时 7.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
…
①
② ③
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 .①②
B .②③
C .③④
D .①④ 8.若定义运算:()
()
a a
b a b b a b ≥⎧⊗=⎨
<⎩,例如233⊗=,
则下列等式不能成立....
的是( ). A .a b b a ⊗=⊗ B .()()a b c a b c ⊗⊗=⊗⊗ C .222()a b a b ⊗=⊗ D .()()()c a b c a c b ⋅⊗=⋅⊗⋅(0c >)
9.以下是解决数学问题的思维过程的流程图:
在此流程图中,①②两条流程线与“推理与证明”中的思维方法匹配正确的是( ).
A .①—综合法,②—分析法
B .①—分析法,②—综合法
C .①—综合法,②—反证法
D .①—分析法,②—反证法 10.已知(0,)x ∈+∞有下列各式:34224,2122
≥++=+
≥+x x x x
x x x ,427
3332733≥+++=+
x x x x x x 成立,观察上面各式,按此规律若54≥+x
a
x , 则正数=a ( )
A .4
B .5
C .44
D .55
第Ⅱ卷(非选择题 共60分)
二、填空题(共4小题,每小题4分,共16分,请把正确的答案填在题中的横线上)
11.若复数2(32)(1)a a a i -++-是纯虚数,则实数a 的值为__ __ .
12. 计算:2(21)122++=,3(31)1232+++=,4(41)
12342
++++=,
……,(1)
1232
n n n +++++=
.以上运用的是什么形式的推理? __ __ . 13. 下列表述:①综合法是执因导果法;②分析法是间接证法;③分析法是执果
索因法;④反证法是直接证法.正确的语句是__ __ . 14.观察下列式子:212311+=,313422+=,414533+=,515644
+=,……,归纳
得出一般规律为 .
三、解答题(共4小题,共44分.解答应写出必要的文字说明、证明过程或演算步骤)
15.(本题满分10分)
第17届亚运会将于2014年9月18日至10月4日在韩国仁川进行,为了搞好接待工作,组委会招募了16名男志愿者和14名女志愿者,调查发现,男、女志愿者中分别有10人和6人喜爱运动,其余不喜爱. (1)根据调查数据制作2×2列联表;
(参考公式:
2
2
()()()()()
n ad bc a b
c d a c b
d χ-=
++++,其中n a b c d =+++.)
17.(本题满分12分)
(1)用反证法证明:在一个三角形中,至少有一个内角大于或等于60°. (2)已知0,n ≥<
洛阳八中高二数学文科3月段考答案
11. 2 12. 归纳推理;13. ①③;
14.
11
(1)(2)
n
n n
n n
+
++=++
所以不能认为性别与喜爱运动有关.
16.(本小题10分)
解:设z=x+y i(x,y∈R),
代入上述方程得x2+y2+2x i=1-i,
∴x2+y2=1且2x=-1,解得x=-1
2
且y=±
3
2
.
∴复数z=-1
2
±
3
2
i.
17.(本题满分12分)
(1)证明:假设在一个三角形中,没有一个内角大于或等于60°,即均小于
60°, (2分)
则三内角和小于180°,与三角形中三内角和等于180°矛盾,故假设不成立 .原命题成立 .
(2+<
需证
2 需证 需证n n n 2)1(22+>+
需证n n n n 21222+>++,
只需证1>0 因为1>0显然成立,所以原命题成立 .。