2017年周考英语试卷
本试卷分第I卷（选择题）和第II卷（非选择题）两部分, 满分120分，考试用时90分钟。
第Ⅰ卷（85分）
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。
A
Apple Seeds
Circulation: 1 Year,9 Issues
Cover Price: MYM44.55
Price For You: MYM 33.95
Product Description: Apple Seeds is an award winning magazine filled with stories for kids aged from 7 to 9. The cover is very soft, providing durability(耐用性) that allows each issue to be enjoyed for many years to come. Besides, there is a big surprise for you—it’s being sold at a more favorable discount than usual.
Better Life
Circulation: 1 Year, 12 Issues
Cover Price: MYM44.55
Price For You: MYM 15.00
Product Description: Designed for those who have a strong interest in personal lifestyle, Better Life is America’s complete home and family service magazine. It offers help with food, recipes, decorating, building, gardening, family health, money management, and education.
Humor Times
Circulation: 1 Year, 12 Issues
Cover Price: MYM36.00
Price For You: MYM 11.95
Product Description: Humor Times Magazine is for those who love to laugh! Full of cartoons and humor columns, it shows up in your mailbox once a month and keeps you smiling all year round! In today’s world, you need a reason to laugh. So let’s find it in Humor Times.
News China
Circulation: 1 Year, 12 Issues
Cover Price: MYM 47.88
Price for You: MYM 19.99
Product Description: News China Magazine is the English edition of China Newsweek. The magazine covers the latest Chinese domestic news in politics, business, society, environment, culture, sports and travels, etc. It is the first comprehensive news magazine for readers interested in China.
21. What is the purpose of the text?
A. To tell us why these magazines popular.
B. To help us make right decisions.
C. To advise us to subscribe the magazines.
D. To encourage us to contribute articles to the magazines.
22. Better Life can probably help you in .
A. making your house beautiful
B. ordering food from restaurants
C. finding interesting stories for your kids
D. learning about sports and travels
23. Which magazine may best help relieve your work stress?
A. Apple Seeds.
B. Better Life.
C. Humor Times.
D. News China.
B
It was a bad time for me. I was low emotionally and tired physically. Probably because of this I hadn’t shaved for a few days. Also, because I had been doing some repairs at my daughter’s house, I was dressed quite scruffily. Boarding the bus to go home I saw it was almost full so I found a rail to lean against.
That was when a young woman, sitting with her child, stood up and offered me her seat. “Wow!”I thought. Out loud I said, “Do I look that old and tired?”She replied,” You look like you’ve had a tough day.” I thanked her sincerely and stayed standing.
A moment later a man rose from his seat at the back of the bus and made his way towards me, squeezing past several people on the way. Then he told me about his addiction problems, asked my advice, and just chatted about life for a few minutes. Then he went back to his seat, very random!
Watching him go, I also looked at the bus-load of people between me and his seat. He hadn’t chosen to talk to those strangers. He chose to talk to this stranger, for whatever it meant to him and whatever comfort it brought him. Why?
That’s when it occurred to me. I must have looked like I had been where he was.
I probably looked like a man who would understand a difficult life. I was humbled and uplifted at the same by the realization that even when we are at our lowest we can still help others—if we look like we might be able to meet them where they live or walk a while in their world.
24. Why did the young woman offer her seat to the writer?
A. Because she thought the writer looked very old.
B. Because the writer looked very friendly.
C. Because the writer looked humorous.
D. Because the writer looked exhausted.
25. What can we learn about the man from Paragraph 3?
A. He was an acquaintance of the writer.
B. He felt familiar with the writer.
C. He might take drugs heavily.
D. He lacked confidence in life.
26. The underlined words “his stranger” in Paragraph 4 probably refers to “”.
A. the young woman
B. one passenger
C. the writer
D. the driver
27. Which of the following may be the best title for the text?
A. Unusual Appearance Interests Strangers.
B. Meet Them Where They Live.
C. Small Take a Difference.
D. Accept What They Are.
C
Imagine that 7 out of 10 working Americans got fired tomorrow. What would they all do? It’s hard to believe it would happen. But that is what the industrial revolution did to the labor force of the early 19th century.
Two hundred years ago, 70 percent of American workers lived on the farm. Today automation has eliminated all but one percent of their jobs, replacing them with machines. But these workers did not sit, doing nothing. Instead, automation created hundreds of millions of jobs in completely new fields. Those who once farmed were then working in factories that produced farm equipment, cars, and other industrial products.
It may be hard to believe, but before the end of this century, 70 percent of today’s jobs will likely be replaced by automation. Yes, dear reader, even you will have your job taken away by machines. In other words, robot replacement is just a matter of time. First, speedy robots being able to lift 150 pounds all day long will carry boxes, sort them, and load them onto trucks. Fruit and vegetable picking will continue to be robotized until no humans pick outside of specialty farms. Next, work of cleaning in offices and schools will be taken over by late-night robots. The trucks will be driven by robots.
We need to let robots take over. They will do jobs we have been doing, and do them much better than we can. They will do jobs we can’t do at all. They will do jobs we never imagined even needed to be done, and they will help us discover new jobs for ourselves and new tasks that expand who we are. They will let us focus on becoming more human than we were.
28. What happened in the early 19th century?
A. Some working Americans in factories got fired.
B. Jobless workers had no choice but to sit there doing nothing at all.
C. Many American workers had to leave factories to work on the farm.
D. The industrial revolution caused many Americans to lose their jobs.
29. How does the author support the underlined statement in Paragraph 3?
A. By giving advice.
B. By giving examples.
C. By following the order of time.
D. By explaining cause and effect.
30. How does the author feel about robots taking over our jobs?
A. Afraid.
B. Happy.
C. Puzzled.
D. Angry.
31. What does the author want to tell us in the text?
A. Why robots should take over our jobs.
B. 70% of working Americans will be jobless.
C. The industrial revolution led to the automation.
D. Robots will do more things for us to live better.
D
In many countries, schools have long summer holidays, with shorter holidays in between. However, a new report suggests shortening school holidays to stop children forgetting what they have learnt during the long summer break. Instead of three
school terms, it says, there should be five eight-week terms. And there should be just four weeks off in the summer, with a two-week break between the other terms.
Sonia Montero has two children at primary school and works full-time. She supports the idea. “The kids,” she says, “have much longer holidays than me and I can’t afford to take several weeks off work, so I need someone to take care of them. But nobody wants the work in the summer months — they all have holidays of their own.”
Not surprisingly, some young people disagree. Student Jason Panos says “It’s a stupid idea. I would hate staying at school in the summer. It’s unfair, too. The people who suggest this had long school holidays when they were young, but now they want to stop us enjoying the summer. The kids in Spain and America have much longer holidays than here, but they don’t forget everything they’ve learnt in a few months.”
Nadia Salib agrees. “Sure,” she says, “the first week at school after the summer is never easy, but you soon get back into it. The real problem round here is that kids get bored after so many weeks out of school, and then some of them start causing trouble. But the answer is to give them something to do, not make everyone stay in school longer.”
32. Why is Sonia in support of shorter school holidays?
A. She doesn’t get any summer holidays in her job.
B. She is worried that her children will forget what they’ve learnt.
C. She can’t afford to pay someone to look after her children.
D. She can’t get anyone to look after her childr en in summer.
33. What does Jason say about long summer holidays?
A. They can help children forget about school.
B. Schools in other countries don’t have them.
C. These days many older people have them too.
D. They have little influence on children’s education.
34. What does Nadia say about young people on summer holidays?
A. They would like to spend more time at school.
B. Long holidays are very bad for their education.
C. They need something to do to enrich themselves.
D. Long holidays should be shortened to stop them causing trouble.
35. Which of the following statements best explains the text?
A. It has been decided that summer holidays should be shortened.
B. Students are angry that school holidays have been changed.
C. Some people want to change school holidays but not everyone agrees.
D. Teenagers are worried that they will be busy during summer holidays.
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。所选答案涂在答题卡36-40的位置上。
Some animals can be trained to help humans．For example，specially trained dogs help blind people walk around the town safely．Some kinds of monkeys can be taught things too．36 The monkeys pick up the phone when it rings，carry shopping bags
and do housework．
In the wild，animals and humans are not usually friends．37 In Africa，the honey guide bird works with humans to find food. The bird likes to eat grubs（幼虫）- a type of insect that lives inside a beehive(蜂窝). It knows how to find beehives but it can’t open them and get the grubs．People like to eat honey，but they aren’t very good at finding beehives．38 The bird flies to a beehive and people follow it. When the people open the beehive and take the honey, they give the grubs to the bird.
In Laguna in the south of Brazil，fishermen and dolphins work as a team．The ocean isn’t very clean，so the fishermen can’t see the fish．39 When the dolphins (海豚) find a large group of fish，they make a noise to tell the fishermen．Then the dolphins push the fish to the beach．The fishermen wait in the water near the beach and catch a lot of fish in their nets．The fishermen’s nets make it easier for the dolphins to catch fish too．In Laguna，fishermen and dolphins have been working together for many years．40 Meanwhile，the dolphins must be happy to help because they teach their babies how to work with the humans!
A．So the bird and the people help each other．
B．They attack each other for food or something else．
C．However，dolphins can find them easily by using sounds．
D．In fact，they usually help to get enough food for their babies．
E．The fishermen teach their children how to work with the dolphins．
F．They can learn how to help people who can’t use their arms or legs．
G．However，there are a few interesting examples where they can work together．
第三部分英语知识运用（共两节，满分45分）
第一节完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑。
When l was in the 8th grade in Ohio, a girl named Helen in my class had a terrible accident．As she was 41 to the bus in order not to miss it，she slipped on some ice and fell under the rear wheels of the bus．She 42 the accident，but was paralyzed from the waist 43 ．1 went to see her，in my 13-year-old mind thinking she wouldn’t live 44 from then on．
Over the years，I moved and didn’t think 45 about Helen after that．Three years ago，in Florida，my oldest son was 46 __by a car while riding his bike, 47 a terrible brain injury. 48 I was looking after him，a lady who said she was the hospital’s social worker called．It was a(n) 49 trying(难受的)day．I burst into tears for no 50 and hung up．
A short time later，a beautiful woman，in a wheelchair，51 into my son’s room with a box of tissues．After 16 years, I still recognized Helen. She smiled, handed me the tissues and hugged me. I told her 52 I was, and after we both went through the shock of that, she began to tell me about her 53 since we last each other. She had married, had children and gotten her degree so that she could 54 the path for those less 55 than her. She told me that if there was anything she could give me, it would be 56 .
Looking at this wonderful, giving person, I felt 57 . But I also felt the first hope I had felt since learning that my son was hurt. From this person that I thought would have no 58 of life, I learned where there is life, there is hope. My son miraculously 59 and we moved back north, but I owe Helen a 60 that I can never repay.
41. A. walking B. riding C. running D. driving
42. A. escaped B. resisted C. sacrificed D. survived
43. A. down B. up C. in D. out
44. A. normally B. comfortably C. seriously D. optimistically
45. A. normally B. much C. less D. little
46. A. collapsed B. driven C. drawn D. hit
47. A. making B. causing C. resulting D. leading
48. A. Before B. While C. After D. Since
49. A. abnormally B. eventually C. particularly D. necessarily
50. A. reason B. excuse C. matter D. account
51. A. ran B. walked C. rolled D. moved
52. A. how B. where C. what D. who
53. A. son B. life C. mother D. work
54. A. build B. smooth C. take D. follow
55. A. fortunate B. healthy C. powerful D. wealthy
56. A. hope B. dream C. fancy D. ideal
57. A. confident B. selfish C. small D. depressed
58. A. ability B. way C. quality D. standard
59. A. worsened B. recovered C. disappeared D. overcame
60. A. life B. bill C. success D. debt
第二节语法填空（共10小题；每小题1.5分，满分15分）
阅读下面材料，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。
Over years, I’ve been teaching children about a simple 61 powerful concept-the ant philosophy．They have an amazing four-part philosophy．First．ants never quit．They’11 climb over；they’11 climb under，and they’11 climb around．They keep looking for another way．What a neat(了不起的)philosophy it is to supposed to never quit 62 (look) for a way to get 63 you are supposed to go ! Second, ants think about winter and summer．That’s 64 important attitude．You can’t be 65 naive as to think summer will last forever．People who have a little experience are clear about this．So ants are gathering their winter food in the middle of summer．It’s important to be realistic．You have got to think about rocks as you enjoy the sand and sun．Think ahead．The third part is that ants think about summer all winter．During the winter，they remind 66 ,“This won’t last long；we’11 soon be out of here．”And 67 the first warm day，the ants are out．If it 68 (turn)cold again，they will dive back down．But they come out again if it is warm．They can’t wait 69 (get)out．Last，how much will an ant gather during the summer to prepare for the winter? All that it 70 (possible)can．What a great philosophy to have-the ant philosophy: never give up,
look ahead, stay positive and do all you can．
第四部分写作(共两节，满分35分)
第一节短文改错(共l0小题；每小题l分，满分l0分)
假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文，文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加，删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分。
Nowadays, there exist an increasingly special phenomenon which bicycles take up the road again. There are a couple of reason that produce this phenomenon. Firstly, riding bicycles is the most environmentally-friendly. It doesn’t have to burn any fuels; so does it give off any polluted air. Secondly, it was quite convenient. The bicycle can always find its way ahead, even though there is traffic jam. Thirdly, the bicycle costs the least among all means in transport. It costs so little that almost every one family can afford to buying one. Finally, by riding bicycles, people can take regularly exercise.
第二节书面表达（满分25分）
阅读使人充实，阅读对于每个人的成长至关重要。请认真阅读下面的引言(quotation)，按要求用英语写一篇短文。
Reading makes a full man．一Francis Bacon
内容要求：1．你对该引言的理解；
2．结合你的阅读经历举例说明；
3．阅读对你的影响。
注意：1.词数不少于100；
2.语言连贯；
3.开头已给出(不计入总词数)。
A s Francis Bacon puts it，reading makes a full man．
2017年10月28日第三次周考试卷（理） 一、选择题（共8小题；共40分） 1. 已知全集 ，集合 ， ，那么集合 等于 A. B. C. D. 2. 已知命题 ： ， ，则 A. ：， B. ：， C. ： ， D. ： ， 3. 在 中，若 ，则这个三角形一定是 A. 锐角三角形 B. 钝角三角形 C. 直角三角形 D. 等腰三角形 4. 已知 幂函数 在 上单调递增； ，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 5. 函数 的图象大致是 A. B. C. D. 6. 已知 ，， ，则 A. B. C. D. 7. 定义新运算 为： 例如 ， ，则函数 的值域为 A. B. C. D . 8. 设方程 有两个不等的实根 和 ，则 A. B. C. D. 二、填空题（共6小题；共30分） 9. 已知 且 ． 10. 函数 的图象与 轴所围成的封闭图形的面积为 ． 11. 若函数()2sin()3 f x x π ω=-，（0ω≠），且(2)(2)f x f x +=-，则ω的最小值 是__________
12. 若AB AC AB AC +=- ,则△ABC 的形状是_________________ 13. 在 中， ， ， ．若 ， ，且 的值为 ． 14. 已知函数2 1()cos 2 f x x x =+，，那么满足()()3 f x f π <的 的取值范围 是 ． 三、解答题（共6小题；共80分） 15. 已知 ，，当 为何值时， （1） ? （2） ? （3） 与 的夹角为钝角? 16. 已知 ，， 分别为 三个内角 ，， 的对边，． （1）求 ； （2）若 ， 的面积为 ，求 ，． 17. 已知函数 （1）求 的最小正周期； （2）求 在区间 上的最小值． 18. 已知函数 ． （1）若曲线 在点 处的切线斜率为 的值以及切线方程； （2）当 时，求 的极值． 19. 巳知函数 在 与 时都取得极值． （1）求 ， 的值及函数 的单调区间； （2）若对 恒成立，求 的取值范围． 20. 在锐角 中，，， 分别为 三个内角 ，， 的对边，若 ． （1）求 的大小； （2）若a =1,求bc 的最大值．
高三生物模拟考试试题 生物试题2008.3 说明：命题人延庆一中平国志 1．本试卷分为第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分.满分72分，考试时间90分钟。 2．考生请将第I卷选择题的正确选项填涂至答题卡上。考试结束，只收答题卡和第II卷。 第Ⅰ卷（选择题，共24分） 一、选择题：每小题只有一个选项符合题意，每小题1分，共24分。 1、2005年6月，在四川发生的人—猪链球菌病，引起了全国人民的高度关注，其病原体是猪链球菌。下列关于猪链球菌的叙述正确的是：（ A ）A．猪链球菌通常进行分裂生殖 B．猪链球菌产生的可遗传变异来自基因重组和染色体变异 C．猪链球菌无核膜、无细胞器 D．组成猪链球菌遗传物质的核苷酸有8种 2、下列组合中，依次属于生命系统的结构层次中种群、群落和生态系统的一组是：D ①生活在人的大肠内的细菌等生物②某一池塘中的全部鱼类 ③肺炎患者肺部的肺炎双球菌④一根枯木及枯木上所有生物 A．①②④B．②③④C．③②①D．③①④ 3、生物学基础研究成果已应用到医药．农药等领域。下列叙述中，符合这种情况的是： ①根据DNA分子的特异性，进行亲子鉴定 ②基于细胞呼吸的原理，采用套种、合理密植、大棚种植等措施增加作物产量 ③在细胞膜的功能研究基础上，开发人工“肾”治疗尿毒症 ④根据染色体变异原理，培育出三倍体无子西瓜 A．①②③B．①②④C．①③④D．②③④ 4、生物繁殖的本质是基因复制，人类正利用这一点进行基因工程，从而产生了基因污染。基因污染是指在天然的生物物种基因中掺进了人工重组的基因，这些外来基因可随被污染生物的繁殖得到增殖，再随被污染生物的传播而发生扩散。根据以上叙述，下列对基因污染产生的原因表述不正确 ．．．的一项是：（ B ）A．基因工程间接导致了基因污染 B．基因工程是通过染色体重组发生基因交换，从而获得生物的新性状 C．基因工程对生物体作强制移植，完全打破了物种原有的屏障，破坏了生物原有的基因D．人类在发展基因工程作物时，没有充分考虑生物和环境影响的研究 5、水稻是我国主要的粮食作物之一。下列有关于水稻生命活动的叙述，正确的是（D ）A．对水稻进行根瘤菌拌种，有利于水稻生物对N2的利用 B．水稻叶片的维管束鞘细胞中含有叶绿体，能固定二氧化碳并形成淀粉 C．硅元素能在水稻体内大量积累，该事实说明硅是水稻必需的大量元素
2012年第一次月考试题 一、选择题(本大题共12小题，每小题5分) 1. (2010·银川一中第三次月考)已知M ={x |x 2＞4}，21,1N x x ? ? =≥??-?? 则C R M∩N = （ ） A ．{x |1＜x ≤2} B ．{x |－2≤x ≤1} C ．{x |－2≤x ＜1} D ．{x |x ＜2} 2. （2010··重庆四月模拟试卷） 函数1 lg(2) y x = -的定义域是 （ ） A. ()12， B. []14， C. [)12， D. (]12， 3. (理)（2010·全国卷I ）记cos(80)k ? -=,那么tan100?= （ ） A.k B. k - D. (文)（2010··全国卷I ）cos300? = （ ） A 12- C 12 D 4（理）（2010·宣武一模）若{}n a 为等差数列，n S 是其前n 项和，且1122π 3 S =，则6tan a 的值为（ ） A B ．C ． D ． 4.(文)（2010·茂名二模）在等差数列{}n a 中，已知1241,10,39,n a a a a =+==则n = （ ） A ．19 B ．20 C ．21 D ．22 5. （2010·太原五中5月月考）在等比数列}{n a 中，前n 项和为n S ，若63,763==S S 则公比q 等于（ ） A ．-2 B ．2 C ．-3 D ．3 6. （2010·曲靖一中冲刺卷数学）函数f(x)是以2为周期的偶函数，且当x ∈（0，1）时，f(x)= x +1，则函数f(x)在（1，2）上的解析式为 （ ） A ．f(x)= 3－x B ．f(x)= x －３ C ．f(x)= １－x D ．f(x)= x +1
届高考六安二中新校区高三下学期地理周测（五）2020日3 月21分时间：40分钟日期：总分：100分。在每小题给出的四个选项中，只有一项是符合100个小题，每小题4分，共一、选择题：本卷共25 题目要求的。年开通后1970在大部分慢火车被高铁淘汰的时代，运行于成昆线上普雄—攀枝花段的一对慢火车，自分钟停一站，票40km/h,个站，运行平均时速不超过几乎每10保留至今。该队列车里程353km,共停靠26 ～3题。元，至今22年未涨过价。图1为该队列车线路分布示意图。据此完成1价最高25.5元，最低2 （）1.对图示铁路线走向影响最大的自然因素是 B.地形地质A.冻土分布年降水量 D. C.资源分布）2. 该对慢火车开通后保留至今，主要目的是（ 让游客能体验慢火车A.吸纳沿线更多的客源 B. 为沿线人民提供便利C.维护列车低运营成本 D. ）类似这样的“慢火车”在我国还可能存在于（ 3. 长江三角洲地区A.唐古拉山脉 B. C.太行山区 D.珠江三角洲地区1 图 ～6题。年人口密度空间分布曲线图。读图完成图2为兰州市2000年和20104 2 图 ）4.对图示铁路线走向影响最大的自然因素是（西北方向东南方向A. B.东北方向 C.西南方向 D. ）5. 10年间，兰州市人口空间格局演变特征显现出（ B.A.市中心人口集聚效应增强郊区城市化十分明显 C.次中心人口集聚效应增强 D.多中心结构发展成熟 16km区域人口密度极小，推断其主要受制于（）6. 西北12～ D.气温灾害A.地形 B.水源 C. 2000为该城市年人口为57.14万，降幅为10.6%。表1万，至我国某城市2012年人口为63.822016 7题。～8年第一、二、三产业的结构比例年和2016(%)。据此完成第二产业表第一产业1 第三产业 51.2 42.2 2000年 6.6 27.8
高三数学周考试卷 一、选择题（5'×8） 1、设随机变量ξ服从正态分布N （u,a 2),若P(ξ＜0）+P(ξ＜2）=1,则u=( ) A 、－2 B 、－1 C 、0 D 、1 2、sin （π+θ）＝21，则cos （2π－θ）等于 A 、23 B 、－23 C 、±23 D 、±2 1 3 、从某班学生中任意找出一人，如果该同学的身高小于160cm 的概率为0.2，该同学的身高在[160，175]cm 的概率为0.5，那么该同学的身高超过175cm 的概率为（ ） A 、0.2 B 、0.3 C 、0.7 D 、0.8 4、已知│p │=22,│q │=3,p ，q 夹角为4 π如图，若B A ＝5p +2q ，C A ＝p －3q ，且D 为BC 中点，则D A 的长度为（ ） A 、2 15 B 、215 C 、7 D 、8 5、在△ABC 中，cos 22A ＝c c b 2+(a 、b 、c 、分别为角A 、B 、C 所对的边)，则△ABC 的形状为（ ） A 、正三角形 B 、直角三角形 C 、等腰三角形或直角三角形 D 、等腰直角三角形 6、黑白两种颜色的正六边形地面砖按如图的规律拼成若干个图案：则第n 个图案有白色地 面砖的块数是（ ） A 、4n+2 B 、4n －2 C 、2n+4 D 、3n+3 7、设函数f （x ）的定议域为R ，若存在与x 无关的正常M ，使│f （x ）│≤M │x │对一切实数x 均成立，则称f （x ）为"有界泛函"：①f （x ）＝x 2，②f （x ）＝2x ，③f （x ）＝ 12++x x x ， ④f （x ）＝xsinx 其中是“有界泛函”的个数为（ ） A 、0 B 、1 C 、2 D3
永州二中2013届高三第三次周考物理试卷 时量:60分钟 总分:100分 选择题（每小题6分，选对得6分，选不全得3分，选错或不选得0分，共60 分） １、如图１所示，一框选洗好的桔子，从输送带上以速度Ｖ送上平台后自动滑行直到停止， 已知运送框与平台之间的动摩擦因数为μ，则运送框中某一质量为m 的桔子受到其他桔子对它的作用力大小为： Ａ、μmg B 、mg Ｃ、mg(1+μ) D 、mg 21μ+ 图１ 2、如图２所示，Ａ为长木板，在水平面上以速度Ｖ１向右运动，物块Ｂ在木板Ａ的上面以速度Ｖ２向右运动，下列判断正确的是 Ａ、若Ｖ１＝Ｖ２，Ａ、Ｂ之间无滑动摩擦力 Ｂ、若Ｖ１＝Ｖ２，Ａ受到Ｂ所施加向右的滑动摩擦力 Ｃ、若Ｖ１>Ｖ２，Ａ受到Ｂ所施加的向右的滑动摩擦力 Ｄ、若Ｖ１<Ｖ２，Ａ受到Ｂ施加的向左的滑动摩擦力 3、A 、B 分别重50N 和60N ，它们与水平地面之间的动摩擦因数为0.25，夹在A 、B 之间的轻弹簧压缩了2cm ，弹簧的劲度系数为400N/m ，系统置于水平地面上静止不动，现用F=1N 的水平拉力作用在木块B 上，如图3所示，力F 作用后 A 、木块B 所受摩擦力大小为9N B 、木块B 所受摩擦力大小为7N C 、木块A 所受摩擦力大小是12.5N D 、木块A 所受摩擦力大小为11.5N 4、如图4所示，物体A 、B 和C 叠放在水平桌面上，水平力F b =5N ，F c =10N ，分别作用于物体B 、C 上，A 、B 和C 仍保持静止，以f 1、f 2、f 3分别表示A 与B ，B 与C ，C 与桌面间的静摩擦力的大小，则 A 、f 1=5N ，f 2=0N ，f 3=5N B 、f 1=0N ，f 2=5N ，f 3=5N C 、f 1=0N ，f 2=10N ，f 3=5N D 、f 1=5N ，f 2=5N ，f 3=0N 5、如图5所示，用长为L 的轻绳悬挂一质量为m 的小球，对小球再施加一个力，使绳子和竖直方向成θ角并绷紧，小球处于静止状态，此力最小为 A 、mgcos θ B 、mgcot θ C 、mgsin θ
2019年山东省高考生物模拟试题与答案 （试卷满分90分，考试时间40分钟） 一、选择题：本题共6个小题，每小题6分，共36分。在每小题给出的四个选项中，只有一项是符 合题目要求的。 1．下列实验材料的选择理由不合理的是 A. 恩格尔曼选择水绵的原因之一是水绵具有易于观察的椭球形叶绿体 B. 比较H2O2酶在不同条件下的分解实验中，选择肝脏研磨液的理由是含有过氧化氢酶 C. 在探究细胞呼吸方式时选择酵母菌的理由是它属于兼性厌氧菌 D. 孟德尔选择豌豆的理由之一是豌豆属于自花传粉、闭花受粉植物 2. 如图为某人被狗伤后的处理和治疗情况，下列叙述不正确的是 A. 清理伤口能减少人被狂犬病病毒感染的机会 B. 不包扎能降低被厌氧菌感染的风险 C. 注射狂犬病免疫球蛋白可使体内迅速产生抗原-抗体反应 D. 注射狂犬疫苗目的是刺激体内记忆细胞增殖分化 3. 己知一批基因型为AA和Aa的豌豆种子，其数目之比为2:1。将这批种子种下，自然状态下 (假 设结实率相同）其子一代中基因型为AA、Aa、aa的种子数之比为 A. 9:2:1 B. 9:6:1 C. 5:2:1 D. 4:4:1 4．下列关于植物激素的说法，错误的是 A．赤霉素既可以促进细胞伸长，也可以促进种子萌发和果实发育 B．脱落酸主要在根冠和萎蔫的叶片中合成 C．细胞分裂素主要由茎产生，能促进细胞的分裂和分化 D．高浓度的乙烯可能会抑制生长素促进细胞伸长的作用 5．下列有关有丝分裂的叙述，正确的是 A．在高倍显微镜下观察处于有丝分裂中期的植物细胞，能看到的结构是细胞壁、染色体、纺锤体和核膜 B．在动物细胞有丝分裂前期，两个中心粒倍增形成两组中心粒并发出纺锤丝
高三数学第一次月考试卷（集合、函数） 班级： 学号： 姓名： . 一、选择题（本大题共12小题，每小题5分，共60分） 1、如果C 、R 和I 分别表示复数集、实数集和纯虚数集，其中C 是全集。则有( ) A. C=R ∪I B. R ∩I=｛0｝ C. R ∩I=φ D. ＣcR=C ∩I 2、已知{1,3,5,7,9}I A B == ,{3,7}A B = ,{9}A B = ,则A B = （ ） A 、{1,3,7} B 、{1,5} C 、{3,7,9} D 、{3,7} 3、满足｛a ，b ｝UM=｛a ，b ，c ，d ｝的所有集合M 的个数是（ ） A. 7 B. 6 C. 5 D. 4 4、若命题P ：x ∈A B ，则 P 是（ ） A. x ?A B B. x ?A 或x ?B C. x ?A 且x ?B D. x ∈A B 5、用反证法证明：“若m ∈Z 且m 为奇数，则()1122 m m --± 均为奇数”，其假设正确的( ) A. 都是偶数 B. 都不是奇数 C. 不都是奇数 D. 都不是偶数 6、命题P:若 a.b ∈R ，则a b +>1是a b +>1的充分而不必要条件：命题q: 函数 y = (][),13,-∞-+∞ .则 （ ） A.“ p 或q ”为假 B. “p 且q ”为真 C. p 真q 假 D. p 假q 真 7、 已知01a <<，则方程|| |log |x a a x =的实根个数是( ) A 、1个 B 、2个 C 、3个 D 、1个或2个或3个 8、已知0log 2log 2a b <<，则a ，b 的关系是 ( ) 9、 已知函数()f x 是定义在R 上的奇函数，当0x <时，1()()3 x f x =，那么1 (9)f --的 值为( ) A 、2 B 、-2 C 、3 D 、-3 10、设0.3log 4a =，4log 3b =，2 0.3c -=，则a ，b ，c 的大小关系是（ ）
2020届江西省赣州市石城中学高三上学期第五次周考英语试卷 总分150分时间：120分钟 （考试时间：120分钟试卷满分：150分） 注意事项： 1. 答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2. 回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。 3. 考试结束后，将本试卷和答题卡一并交回。 第一部分听力理解（共两节，满分30分） 第一节（共5小题；每小题1.5分，满分7.5分） 请听下面 5 段对话, 每段对话后有一个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。听完每段对话后, 你都有10 秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1. What does the man want to do? A. Order a computer. B. Have his computer fixed. C. Do homework with the girl. 2. What does the woman think of the film? A. Quite amusing. B. Very interesting. C. A bit disappointing. 3. How many offices are there at present? A. 2. B. 4. C. 6. 4. Where does the conversation probably take place? A. At a lecture room. B. At a computer lab. C. At a print shop. 5. What was the weather probably like in Australia then? A. Rainy. B. Fine. C. Windy. 第二节（共15小题;每小题1.5分,满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对或独白前,你将有时间阅读各个小题，每小题5秒钟；听完后,各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料,回答第6、7题。 6. Where does the woman want to go? A. The gym. B. The restaurant. C. The square.
x 年高三第一次高考诊断 数 学 试 题 考生注意： 本试卷分第I 卷（选择题）和第II 卷（非选择题）两部分，满分为150分，考试时间120分钟。 所有试题均在答题卡上作答，其中，选择题用2B 铅笔填涂，其余题用0.5毫米黑色墨水、签字笔作答。 参考公式：如果事件A 、B 互斥，那么P （A+B ）=P （A ）+P （B ） 如果事件A 、B 相互独立，那么P （A ·B ）=P （A ）·P （B ） 如果事件A 在一次试验中发生的概率是P ，那么它在n 次独立重复试验中恰好发 生k 次的概率P n （k ）=k n k k n P P C --)1(（k=0，1，2，…，n ）。 球的体积公式：3 3 4R V π= （其中R 表示球的半径） 球的表面积公式S=4πR 2（其中R 表示球的半径） 第Ⅰ卷（选择题，共60分） 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．（理科）如果复数2()1bi b R i -∈+的实部和虚部互为相反数，则b 的值等于 （ ） A ．0 B ．1 C ．2 D ．3 （文科）设全集{1,2,3,4,5,6,7,8},{1,2,3},{6,7,8}U A B ===集合，则 ()() U U C A C B = （ ） A ．φ B ．{4，5} C ．{1，2，3，6，7，8} D ．U 2．已知4(,),cos ,tan()254 π π απαα∈=--则等于 （ ） A ． 17 B ．7 C ．17 - D ．-7
3．在等差数列{}n a 中，若249212,a a a ++=则此数列前11项的和11S 等于 （ ） A ．11 B ．33 C ．66 D ．99 4．（理科）将函数3sin(2)y x θ=+的图象F 1按向量( ,1)6 π-平移得到图像F 2，若图象F 2 关于直线4 x π=对称，则θ的一个可能取值是 （ ） A ．23 π - B ． 23 π C ．56 π- D ． 56 π （文科）将函数cos 2y x =的图像按向量(,2)4 a π =-平移后的函数的解析式为 （ ） A ．cos(2)24 y x π =+ + B ．cos(2)24 y x π =- + C ．sin 22y x =-+ D ．sin 22y x =+ 5．（理科）有一道数学题含有两个小题，全做对者得4分，只做对一小题者得2分，不做或 全错者得0分。某同学做这道数学题得4分的概率为a ，得2分的概率为b ，得0分的 概率为c ，其中,,(0,1)a b c ∈，且该同学得分ξ的数学期望12 2,E a b ξ=+则 的最小值是 （ ） A ．2 B ．4 C ．6 D ．8 （文科）某高中共有学生2000名，各年级男、女生人数如表所示。已知 在全校学生中随机抽取1名，抽到高三年级男生的概率是0.16，现用分 层抽样的方法在全校抽取64名学生，则应在高一年级抽取的学生人数 为 （ ） A ．19 B ．21 C ．24 D ．26 6．在ABC ?中，若(2),(2)A B A B A C A C A C A B ⊥-⊥-，则ABC ?的形状为 （ ） A ．直角三角形 B ．等腰三角形 C ．等边三角形 D ．等腰直角三角形 7．上海世博园区志愿者部要将5名志愿者分配到三个场馆服务，每个场馆至少1名，至多 2名，则不同的分配方案有 （ ） A ．30种 B ．90种 C ．180种 D ．270种 8．已知α，β是两个不同的平面，l 是一条直线，且满足,l l αβ??，现有：①//l β；②l α⊥；
丰城九中高三数学第二次周考试卷（25-33）命题人：徐振恒审题人：杨国群 一，选择题(每小题5分，共50分) 1、设数列{a n }的前n项和S n=n2，则a8的值为（） A．15 B．16 C．49 D．64 2、等差数列{a n }满足a 4 2+a 7 2+2a 4 a 7 =9，则其前10项之和为（） A．﹣9 B．﹣15 C．15 D．±15 3、已知{a n }为等比数列且满足a6﹣a2=30，a3﹣a1=3，则数列{a n}的前5项和S5=（）A．15 B．31 C．40 D．121 4、设S n 是等差数列{a n }的前n项和，若=（） A．1 B．﹣1 C．2 D． 5、朱世杰是历史上最伟大的数学家之一，他所著的《四元玉鉴》卷中“如像招数”五问有如下问题：“今有官司差夫一千八百六十四人筑堤．只云初日差六十四人，次日转多七人，每人日支米三升，共支米四百三石九斗二升，问筑堤几日”．其大意为：“官府陆续派遣1864人前往修筑堤坝，第一天派出64人，从第二天开始，每天派出的人数比前一天多7人，修筑堤坝的每人每天分发大米3升，共发出大米40392升，问修筑堤坝多少天”．这个问题中，前5天应发大米（） A．894升B．1170升 C．1275米 D．1467米 6、已知等差数列{}n a的前20项的和为100，那么714 a a?的最大值为( ) A. 25 B. 50 C.100 D.不存在 7、已知等差数列{a n }，a 1 =﹣2013，其n前项和=（） A．2017 B．3 C．6051 D．﹣2017 8、设数列{a n }满足：a n+1=a n+，a20=1，则a1=（） A．B．C．D． 9、已知q是等比数{a n }的公比，则q＜1”是“数列{a n }是递减数列”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 10、数列{a n }中，若存在a k，使得“a k＞a k﹣1且a k＞a k+1”成立（其中k≥2，k∈N*）， a k 则称为{a n }的一个H值．现有如下数列： ①a n=1﹣2n ②a n=sin n ③a n=④a n=ln n﹣n 则存在H值的数列的序号为（） A．①②B．②③C．①④D．③④ 二，填空题(每小题5分，共20分) 11、在等比数列{a n }中，已知公比q=，S5=﹣，则a1= ． 12、数列{a n }的前n项和S n=3n﹣n2，则a n= ． 13、已知 12 9,,,1 a a --成等差数列， 3 12 9,,,1 b b b --成等比数列，则 221 () b a a -= 14、一个三角形数阵如下： 1 222 3 24252 6 2728292 …… 按照以上排列的规律，第n行（n ≥3）从左向右的第3个数为________． 第1页/（共4页）第2页/（共4页）
1．下列有关细胞结构和功能的叙述，错误的是( ) A．细胞的功能绝大多数基于化学反应，这些反应发生于细胞的特定区域 B．经胞吐方式运出细胞的不都是大分子也有小分子 C．经高尔基体加工的蛋白质可以留在细胞内发挥作用 D．神经纤维内外两侧的Na＋浓度差是依靠其离子通道维持的 2．右图是研究物质A和物质B对某种酶催化活性影响的曲线。下列叙述错误的是( ) A．底物浓度的高低不会改变酶的催化活性 B．增大底物浓度不能消除物质A对该种酶的影响 C．增大底物浓度可以消除物质B对该种酶的影响 D．物质B能通过破坏酶的空间结构使酶变性而降低反应速率 3．下列关于动物细胞有丝分裂的叙述，正确的是( ) A．分裂间期有核DNA和中心体的复制 B．分裂间期核DNA含量和染色体组数都加倍 C．纺锤体形成于分裂前期，消失于分裂后期 D．染色单体形成于分裂前期，消失于分裂后期 4．组织液中K＋浓度急速降低到一定程度会导致膝跳反射减弱。下列解释合理的是( ) A．传出神经元兴奋时膜对Na＋的通透性增大B．传出神经元兴奋时膜对K＋的通透性增大C．可兴奋细胞产生的动作电位的峰值增大D．可兴奋细胞静息电位的绝对值增大 5．下列关于种群、群落和生态系统的叙述，正确的是( ) A．五点取样法适合调查灌木类行道树上蜘蛛的种群密度 B．就食性而言，杂食性鸟类的数量波动小于其他食性的鸟类 C．就生态系统结构而言，生态瓶的稳定性取决于物种数 D．变色龙变化体色，主要是向同类传递行为信息 6．生物体内某基因被选择性表达过程如右图所示。下列有关叙述，正确的是( ) A．在解旋酶作用下DNA分子双螺旋解开 B．转录区域DNA的U应与RNA的A配对 C．该过程不可发生在真核细胞的细胞核中 D．该mRNA翻译出的两条肽链氨基酸数量不同 1．下列有关生物体内的物质运输的叙述，正确的是（） A．细胞内囊泡的运输过程中存在囊泡膜与靶膜的识别，这可能与囊泡膜上的蛋白质有关B．氨基酸的跨膜运输和被转运到核糖体上都离不开载体蛋白 C．蛋白质可通过核孔自由进出细胞核 D．人体内的细胞都是通过协助扩散的方式吸收葡萄糖的