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2004届重庆市高三联合诊断性考试(第一次)

2004届重庆市高三联合诊断性考试(第一次)
2004届重庆市高三联合诊断性考试(第一次)

2004届重庆市高三联合诊断性考试(第一次)

英语

第I卷(三部分共115分)

第一部分:听力(共两节,满分30分)

做题时,先将答案划在试卷上。录音内容结束后,我将有两分钟的时间将试卷上的答案转涂到答题卡上。

第一节(共5小题;每小题1.5分,满分7.5分)

听下面5段对话。每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。

例:How much is the shirt?

A. £19.15.

B. £9.15.

C. £9.18

答案是B。

1.Where did this conversation probably take place?

A.In a school gym.

B.At a bookstore.

C.At a sports meet.

2.What does the man mean?

A.He found the topic uninteresting.

B.He hurt his eye this morning.

C.The clock was a very unusual one.

3.How much money will the man have after he buys the cheaper tickets?

A. $6

B. $4

C. $1

4.Where is Mrs. Smith most probably?

A. At home.

B. In a phone box.

C. In her office.

5.What can we learn from this conversation?

A.The man couldn‘t give up smoking.

B.The man found it easy to give up smoking.

C.The woman believed that the man could give up smoking.

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。听每段对话或独白前,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至8题。

6.When did the talk take place?

A.After they got up in the morning

B.After the man got back home from work.

C.After the woman visited her friends.

7.What did the woman suggest doing?

A.Moving to Florida.

B.Moving to New York.

C.Visiting their children and grandchildren.

8.What did the woman think of Florida‘s weather?

A.Too snowy and icy.

B.Warm and sunny

C.Even wors e than New York‘s

听第7段材料,回答第9至11题。

9.Why did the man write the letter?

A.To get advice.

B.To ask for permission.

C.To get a job.

10.W hat‘s the woman‘s opinion about the second part?

A.Too little about his work experience.

B.Too much about his family.

C.Just OK.

11.W hat did the man probably do about his letter?

A.Wrote the whole letter again.

B.Tore up the letter.

C.Made a little change.

听第8段材料,回答第12至14题。

12.W hy did the man come into the room?

A.To do his own work.

B.To talk to Kate.

C.To have Jane type a letter for him

13.W hat will Kate probably do next year?

A.Go to Japan.

B.Go to night school.

C.Change her job.

14.W hat does Kate think of the money for her studies?

A.Too expensive.

B.Too cheap

C.Just worth spending

听第9段材料,回答第15至17题。

15.W hy did the woman tell Paul not to worry?

A.Because chemistry is less important.

B.Because physics is more important.

C.Because the average is important.

16.W hat will happen if Paul fails the exqm?

A.He will lose heart.

B.His parents will punish him.

C.He will pass with a lower grade.

17.W hat did the woman suggest in the end?

A.Get some coffee.

B.Repeat the class.

C.Go to a movie.

听10段材料,回答第18至20题。

18.W hat does most of the information in this talk come from?

A.A study done by Friends of Animals.

B.A study done by the city of New York.

C.A study done by 41 cities.

19.W hat is the animal problem mentioned in this talk?

https://www.wendangku.net/doc/2518718314.html,ck of enough care of animals.

B.Too much money on animal control.

C.Not a good animal control.

20.W hich of the following does NOT take an official interest in animal

control?

A.Friends of Animals.

B.New York City.

C.Chicago.

第二部分:英语知识运用(共两节,满分45分)

第一节单项填空(共15小题;每小题1分,满分15分)从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21.–Daddy ,would you buy me an MP3 player if I do well in the first

city-wide examination?

--I______ ,I promise.

A. would

B. shall

C. will

D. do

22.I thought that these computers cost $850, but the price _____up $50.

A. went

B. will go

C. goes

D. has gone

23. When you rewrite the paragraph, I advise you to_____ the last sentence as it is rather misleading.

A. point out

B. make out

C. leave out

D. put out

24. My friend Paul was cheated when he paid $ 1,000 for that second—hand car ;it was not worth ______.

A. that all much

B. all that much

C. that much all C. much all that

25. The earth goes around a little more rapidly ______ it is closer to the sun.

A. when

B. or

C. than

D. wherever

26. Alan, _____ home very late from his job, found an angry wife waiting for him at breakfast.

A. returning

B. returned

C. to return

D. had returned

27. Women prefer to think and then speak, while men like to speak as they ____.

A. think

B. have thought

C. thought C. are thinking

28. They are teachers and don‘t realize _____ to start and run a company.

A. what it takes

B. what takes it

C. what they take

D. what takes them

29. After _____ for the job , you will be required to take a language test.

A. being interviewed

B. interviewed

C. interviewing C. having interviewed

30. ______ can help but be attracted by the science stories.

A. Everybody

B. Anybody

C. Somebody

D. Nobody

31.-- ______

Ok. How are you doing?

A. How‘s it going?

B. How do you do?

C. What is up?

D. What is the matter?

32. In order to encourage the students to study hard, the school decides to give the scholarship to ______ wins the first in the exam.

A. who

B. whom

C. whomever

D. Whoever

33. She was surprised to know that the doctor was ______ too much for the treatment he was giving her.

A. affording

B. costing

C. offering

D. charging

34. I think your sister is old enough to know ______ to spend all her money on beautiful dresses.

A. other than

B. rather than

C. better than

D. more than

35.—G ood evening. Mr. Pierce. I‘m sorry to bother you. But it‘s the fourth of December today.

--Oh, Mrs. Baxter, _____ rent! I‘m sorry it‘s late. I‘ll write you _____ check right now.

A. the; the

B. a; a

C. a; the

D. the; a

第二节完形填空(共20小题;每小题1.5分,满分30分)阅读下面短文,掌握其大意,然后从36—35各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

The ship first appeared as a small point on the horizon(地平线). We had grown _36__ at the delay and cheered when we saw it . For most of us this was an _37__vevnt, because the small object that had come into view was a warship. Husbands, fathers, brothers and _38___ were coming home after a (n) _39__of four years. We were _40__ that the ship would arrive in about 45 minutes. We cheered more 41 than ever.

The harbour(海港) had rarely 42 such a colourful scene. It was decked out(装饰) with flags and we were all wearing 43 summer clothes. The time we waited seemed 44; but little by little the point took the 45 of a ship and, soon, it came so near that we could 46 its name: Candia, on the ship.

Now the crowd could hardly be 47. People were jumping up and down, waving; and little boys climbed onto 48 vehicles(车辆) to get a better view. As the ship came into the harbour, everybody 49 eagerly at the troops lined along the railings(栏杆). Soldiers 50 waved to us wildly, shouting out the names of people they 51 or wanted to see. The two

young men in the 52 with a ―Welcome Home!‖ banner almost fell over in their 53 to lift it higher. Women were crying; others 54; and some did not quite know whether to laugh or cry. Now the troops were 55 above us. Our excitement had mounted to a peak(顶峰), for soon they would come on shore.

36. A. excited B. overjoyed C. anxious D. impatient

37. A. unexpected B. important C. interesting D. encouraging

38. A. friends B. sisters C. officers D. soldiers

39. A. expectation B. wait C. absence D. disappearance

40. A. known B. announced C. explained D. informed

41. A. anxiously B. loudly C. hurriedly D. surprisedly

42. A. gained B. offered C. seen D. missed

43. A. good B. comfortable C. thin D. gay

44. A. endless B. limited C. enjoyable D. short

45. A. advantage B. lead C. form D. size

46. A. make out B. find out C. let out D. pick out

47. A. pushed back B. held back C. managed D. comforted

48. A. new B. attractive C. moving D. still

49. A. smiled B. whistled C. stared D. glanced

50. A. at sea B. in sight C. on land D. on board

51. A. saw B. recognized C. loved D. heard

52. A. crowd B. troops C. place D. ship

53. A. hurry B. carelessness C. excitement D. disappointment

54. A. smiling B. laughing C. screaming D. shouting

55. A. directly B. highly C. hardly D. probably

第三部分:阅读理解(共20小题;每小题2分,满分40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

Everyone would like to be a millionaire but can you imagine having over $30 million and only being 20 years old? Britney Spears from Kentwood, a small town in Louisiana, is only 20 years old; she is an international pop superstar with not only $30 million but also a $2 million house in LA. At her young age, she can look after her family financially(经济上) all her life.

This year is a big year for Britney, she is currently on a 31 date tour of the US and every concert is a sell out. That means she plays in front of a crowd of around 18,000 every time. It‘s a tiring schedule(安排表) but brings great rewards. When touring, she goes to bed around lam and then has a lie-in until 1pm or 2pm the next day. Her philosophy(人生观) is to take care of the body and relax but always make sure you work hard and have fun.

Spears is not satisfied with only touring and selling nearly 40 million records so the decided to branch out into the movie business and try a bit

of acting. She made an appearance in ―Austin Powers 3‖ this year and she is filming a teenage comedy that will be released in March 2003. In this movie, she has a starring role. The movie was her own concept and she picked the writer.

For Britney, acting is another way to express herself and she is enthusiastic(热心) about it all. If her movies are successful, her bank account is sure to grow by another few million dollars but she has been quoted as saying she does it for the love, not the money.

56. We can infer from the text that most millionaires are .

A. older than 20

B. around 20

C. in their 30s

D. in their 40s

57. Tickets for her concerts are .

A. cheap

B. expensive

C. on sale soon

D. all sold

58. The underlined word ―you‖ in the second paragraph refers to .

A. a person in general

B. a particular person

C. Britney Spear herself only

D. the reader

59. Which of the following is not true according to the text?

A.Though young. Britney can support her family now.

B.While touring, Britney sleeps about 12 hours a day.

C.The teenage comedy movie was based on Britney‘s own story.

D.Britney will be even richer with her movies successful.

60. According to Britney Spear, she works .

A. to be a great actress

B. for the enjoyment

C. for money

D. to be more famous

B

In the world today, there are millions of surveillance cameras, or ?spy cams‘, watching and monitoring our daily activities. There are some benefits of course, as people who are breaking laws can be watched and caught using cameras and this helps keep our society and public places safe.

These cameras are everywhere and most are openly visible on roads, in airports, businesses, shopping centers and government buildings and even in lifts. Even schools have started using spy cams to watch student activity and behaviour.

The cameras are so common now that we hardly ever even notice them. But the problem lies with the ones that are hidden away from our eyes and are unseen. Technology has helped develop tiny cameras that can be ve ry well hidden and they can ?spy‘ on shoppers, workers, babysitters and people in hotels and clubs without the people even knowing.

It is these spy cams that people feel are an invasion of privacy. Recently, in the U.S, there have been a number of court cases against babysitters whose actions have been recorded by their employers on hidden cameras.

The number of cameras in public and private areas is on the increase and with rising crime rates and the recent terrorist attacks, more and more surveillance cameras are being used to watch us. This means that we all have to be aware that our employers, department stores, police and even some of our friends could be spying on us at any time!

61. In the writer‘s opinion, surveillance cameras .

A. do more good than wrong

B. are overused

C. should be very popular

D. ought to be more widely used

62. In what way can the surveillance camera benefit the public?

A. By helping keep social safety.

B. By monitoring the employees.

C. By watching the students in class.

D. By spying on customers.

63. According to paragraphs 3 and 4, people the use of hidden cameras.

A. object to

B. agree to

C. feel happy about

D. are fearful of

64. Spy cams will be more widely used in the future because .

A. all people want to spy

B. of the invasion of privacy

C. people enjoy being watched

D. of terrorist attacks

C

OVER 22 million dead animals that have never been seen by the public before were on display last week in London, Britain. The selection is one of the biggest and the best in the world and the Natural History

Museum hopes that it will help people understand nature better.

People were able to examine the animals, which range from tiny insects that lived millions of years ago to the bones of dinosaurs(恐龙) and butterflies(蝴蝶) in amazing detail.

The scientific specimens(标本) are all either stored in alcohol(酒精) or made in a fossil(化石) form and have been given to the new Darwin Centre by scientists and researchers over the last hundred years.

The center, named after the world famous scientist Charles Darwin, will be open free to the public. It is part of the much larger Natural History Museum, which attracts over 2 million visitors a year.

The new museum has actual specimens caught by Darwin, including a parrotfish and pipefish he caught while on his journey around the world. There are also lots of other specimens caught by famous explorers that lived over 150 years ago, which include a tusk(长牙)from and African elephant given by famous British scientist David Livingstone.

People can view specimens close up, watch videos of scientists at work, look at information on computers, and look up through the seven-storey storage hall to sense the hu ge scale of what‘s inside. They are also able to take guided tours and join live events with scientists.

Another section of the museum is being planned. When it opens in 2007, there will be an extra28 million insects on display and 6 million plants.

65.by visiting the museum, one can_____.

A.enrich his knowledge of the universe

B.have a better understanding of the would

C.get to know the animal world better

D.see all kinds of dead animals

66.The dead animals on display_____.

A.were mainly caught by Charles Darwin

B.are specimens presented by scientists and researchers

C.hare mostly been unseen by the public before

D.are the best selection in the world so far

67. If you go to visit Darwin Centre, you_____.

A.will have to buy a ticket

B.will be allowed to touch the exhibits

C.w on‘t be charged

D.will check information on a computer first

68. What would be the best title for the text?

A.Natural History Museum

B.A New Darwin Centre

C.History of the animal

D.Time You Can Touch

D

During the last ten years, several important new technologies have

affected advertising considerably. One was the penetration (渗透) of cable television and satellite receivers into a vast number of American homes. Many cable channels are devoted to single types of programming, such as straight news, home shopping, sports, or comedy. This has changed television from the most widespread of mass media to a somewhat more specialized medium. Now smaller companies and companies with products that interest a limited market can use television to reach audiences with particular interests.

Another change in the TV world has been the growing presence of videocassette recorders. For many customers, watching movies on video at home has replaced going to the movie theater. Advertisers have watched this trend with interest. Some videos now begin with an ad, shot in a suitable cinematic cycle, that sells a product valued by that particular movie‘s audience.

Computer technology has had its own effect. Personal computers, modems, electronic mails, electronic bulletin boards, even fax machines give advertisers new media for reaching potential(潜在的) customers. But these choices are largely replacements for print media, and their advertising trends to be more information-oriented than image-oriented. The increased number of computer users has benefited advertisers in another way as way as well. Now even the

smallest companies can maintain a database (数据库) for direct mail.

This, too, is an excellent medium for reaching people with particular interests.

Today advertising is a powerful means that announces the availability(实用性) and location of products, expresses the quality and value of those products, and even fills brands with personality while at the same time defining the personality of the people who buy them. In turn, advertising itself is shaped by the technology used to convey its message to potential customers.

69._____make it possible for small companies to send

advertisements to audiences specially interested in their products.

A. Single types of TV programming

B. Mass media

C. Particular interests

E.New technologies of TV sets

70. As more and more people have begun to use computers,

advertisements can be directly sent to particular costumers_____.

A.by electronic bulletin board

B.by post

C.by e-mail

D.by fax machines

71. The best title of this passage might be ―______‖.

A.The Information Age of Advertising

B.Mass Media and Advertising

C.Technologies of Advertising

D.Advertising and Customers

E

Science and technology have advanced at such a rate that cloning (克隆) has now become a reality. The possibility of cloning humans is a serious issue and raises ethical (伦理的) questions. In my opinion, cloning is useful for research into cures for disease. However, In my opinion, cloning is useful for research into cures for disease. However, I think that it needs to be approached with caution and carefully monitored by governments.

Research into cloning and stem cell (干细胞) production is primarily aimed at finding new treatments for currently incurable illnesses. While this would improve the quality of life for many ,not enough is understood about what effects cloning would have on the world in the future. This is primarily because we do not understand enough about the effects of cloning and both the physical and psychological effects that it is likely to have on cloned humans and on the rest of the world. Furthermore, it is thought that a cloned human would be unlikely to survive birth and would suffer from complications resulting from malformed (畸形的) organs.

There are also quite serious ethical issues in danger. In essence, those who are against cloning would argue that scientists have no right to play God and to interfere with natural processes.

Producing embryos (晶胚) for the purpose of harvesting stem cells for research presents important questions about the nature and status of the embryo being produced. It may also make us question whether throwing it away after use reduces the value we place on human life.

In conclusion, I do not agree that research into cloning using human embryos should continue. This is not only because it may reduce the value we place on human life, but also because not enough is known about the effects. However, I do think that if there is a way to produce stem cells using cloning which does not put human life at risk, then governments should continue to support it.

72.What is the writer‘s general opinion on cloning?

A.It is useful in every area of research.

B.It needs to be carefully controlled by governments.

C.It is useful for research into cures for disease if it is controlled.

D.It is only useful for research into cures for disease.

73. The writer‘s main reason against cloning is that______.

A.not enough is known about the effects of cloning

B.a cloned human would be likely to die of malformed organs

C.cloning has negative physical and psychological effects on clones

D.it would affect the quality of life for many

74. The main argument I Paragraph 3 is that______.

A.scientists do not value human life

B.the process of cloning needs to be questioned

C.cloning devalues human life

D.scientists should not interfere with natural processes

75. In Paragraph 4, the writer thinks governments should______.

A.not put human life at risk

B.support all forms of research into stem cell production

C.not support any form of research into stem cell production

D.support research into stem into stem cell production harmless to

human life

第II卷

第四部分:写作(共两节,满分35分)

第一节短文改错(共10小题;每小题1分,满分10分)此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只一个错误),则按下列情况改正:

该行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

高三第一次月考生物试卷(含答案)

高三第一次月考生物试卷(含答案) 考试时间:90分钟试卷分值:100分命题人: 第I 卷(单项选择题共50分) 1.下列有关各种化合物的叙述,正确的是() A.各种糖都能与斐林试剂发生显色反应B.各种脂质都参与生物膜的构成C.各种蛋白质的合成都需要模板D.各种核酸分子中嘌呤数都等于嘧啶数 2.关于蛋白质的叙述,错误的是() A.rRNA能参与蛋白质的生物合成 B.DNA和蛋白质是染色体的组成成分 C.人体血浆中含有浆细胞分泌的蛋白质 D.核糖体上合成的蛋白质不能在细胞核中发挥作用 3.HSP是机体细胞受高温刺激后合成出的一类热休克 蛋白。该蛋白可发挥如图所示的作用,以保护机体细胞 不受破坏。图中HSP所起的作用是() A.促进肽键的形成B.抑制氨基酸脱水缩合 C.促使肽链形成空间结构D.维持蛋白质结构稳定性 4.草履虫体内既含DNA又含有RNA,将草履虫体内的遗传物质彻底水解后可以得到() A.1种五碳糖B.5种含氮碱基C.4种核苷酸D.8种核苷酸5.下列关于脂质的叙述,正确的是() A.脂质中的磷脂是细胞膜的组成成分B.维生素D和性激素不属于固醇类物质 C.脂肪比相同质量的多糖彻底氧化产能少D.脂质在核糖体、内质网和高尔基

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陕西省数学高三理数诊断性模拟考试试卷 B 卷
姓名:________
班级:________
成绩:________
一、 单选题 (共 12 题;共 24 分)
1. (2 分) 已知复数 z 与(z﹣3)2+18i 均是纯虚数,则 z=( )
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A . 若 a>b,则 ac2>bc2
B . 若 a>b,c>d,则 a﹣c>b﹣d
C . 若 a>b,则 D . 若 a>|b|,则 a2>b2 3. (2 分) 设随机变量 ~B(5,0.5),又
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D. 和 4. (2 分) (2017 高三下·鸡西开学考) 已知一个几何体的三视图如图所示,则这个几何体的体积是( )
第 1 页 共 14 页

A. B. C. D. 5. (2 分) (2018 高三上·云南月考) 设直线 l 过椭圆 C: F2 是椭圆的右焦点,则△ABF2 的内切圆的面积的最大值为( ) A.
的左焦点 F1 与椭圆交于 A、B 两点,
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第 2 页 共 14 页

A . 17 B . 18 C . 19 D . 20
7. (2 分) 设变量 x、y 满足 A.6 B.4 C.2
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第 3 页 共 14 页

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--------------- 日期:

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符合题目要求的。

2 1.已知复数z 1 i,则- z B . Acos( x )的递减区间是 [2 k —,2k 4 [k4‘k 2i D . -2 2 .设全集为集合M{x|x 2}, N {x| 2 小 x 3x 10 0},则下列关系中正确的 A. M=N D . (C u M ) N 3 ?设a 0, 1 0,若是log2 a与log2 b的等差中项,则 1的最小值为 b 2 2 4 . 已知命题p 2 对任意x R,2x 2x 1 0 ;命题q : 存在x R,sin x cosx .2,则下列判断:①p且q是真命题;② p或q是真命题; ③q是假命题;④p是真命题,其中正确的是 A .①④ () B .②③ C .③④ D .②④ 5 .函数y Acos( x )(A 0, 0,| | -)的图象如下图所示,则 [2 k -,2k 4 5-],k z 4 [k 8飞8],k 6 .已知函数f (x) log3 (x 2x4,x 1),x 4的反函数是f 1(x),且f 冷a,则f(a 7)等

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湖南省长沙市宁乡二中届高三第一次月考 数学试卷 时量:120分钟 总分150分 一 选择题(每小题只有一个正确答案,选对计5分) 1.设全集U={-2,-1,0,1,2},A={-2,-1,0},B={0,1,2},则(U A )∩B= ( ) A .{0} B .{-2,-1} C .{1,2} D .{0,1,2} 2. 一个物体的运动方程为21t t s +-=其中s 的单位是米,t 的单位是秒,那么物体在3秒末的瞬时速度是 ( ) A .7米/秒 B .6米/秒 C .5米/秒 D .8米/秒 3.下列函数中,在定义域内既是奇函数又是减函数的是 ( ) A .3 x y -= B .x y sin = C .x y = D .x y )2 1 (= 4 . 条 件 甲 : “ 1>a ”是条件乙:“a a >”的 ( ) A .既不充分也不必要条件 B .充要条件 C .充分不必要条件 D .必要不充分条件 5. 不 等 式 21 ≥-x x 的解集为 ( ) A.)0,1[- B.),1[∞+- C.]1,(--∞ D.),0(]1,(∞+--∞ 6. 图 中 的 图 象 所 表 示 的 函 数 的 解 析 式 为 ( ) (A)|1|2 3 -= x y (0≤x ≤2) (B) |1|23 23--=x y (0≤x ≤2) (C) |1|2 3 --=x y (0≤x ≤2) (D) |1|1--=x y (0≤x ≤2)

7.如果()f x 为偶函数,且导数()f x 存在,则()0f '的值为 ( ) A .2 B .1 C .0 D .-1 8. 设,a b R ∈,集合{1,,}{0, ,}b a b a b a +=,则 b a -= ( ) A .1 B .1- C .2 D .2- 9. 已知3 2 ()(6)1f x x ax a x =++++有极大值和极小值,则a 的取值范围为 ( ) A .12a -<< B .36a -<< C .1a <-或2a > D .3a <-或6a > 10. 已知3 2 2 ()3(1)1f x kx k x k =+--+在区间(0,4)上是减函数,则k 的范围是( ) A .1 3 k < B .103k <≤ C .1 03 k ≤< D .1 3 k ≤ 二 填空题(每小题5分) 11. 曲线x y ln =在点(,1)M e 处的切线的方程为______________. 12. 函数552 3--+=x x x y 的单调递增区间是__________________. 13.若函数)1(+x f 的定义域为[0,1],则函数)13(-x f 的定义域为____________. 14. 已知2 (2)443f x x x +=++(x ∈R ),则函数)(x f 的最小值为____________. 15. 给出下列四个命题: ①函数x y a =(0a >且1a ≠)与函数log x a y a =(0a >且1a ≠)的定义域相同; ②函数3 y x =与3x y =的值域相同;③函数11 221 x y =+-与2(12)2x x y x +=?都是奇函数;④ 函数2 (1)y x =-与1 2x y -=在区间[0,)+∞上都是增函数,其中正确命题的序号是 _____________。(把你认为正确的命题序号都填上) 三 解答题(本大题共6小题,共75分) 16 (本小题满分12分 )设全集U=R, 集合A={x | x 2 - x -6<0}, B={x || x |= y +2, y ∈A }, 求C U B ; (C U A)∩(C U B)

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