大学英语英语四级练习卷（最后+答案） (2).docx

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1、大学英语四级试练习卷一、阅读理解 阅读理解(一)There is evidence that the usual variety of high blood pressure is, in part, a familiar disease. Since families have similar genes as well as similar environments, familiar diseases could be due to shared genetic influences,to shared environmental factors, or to both. For som

2、e years,the role of one environmental factor commonly shared by families, namely dietary salt (i. e. , sodium chloride), has been studied at Brookhaven National Laboratory. These studies suggest that chromic excess salt ingestion can lead to high blood pressure in man and animals. Some individuals,

3、however, and some rats consume large amounts of salt without developing high blood pressure. No matter how strictly all environmental factors were controlled in these experiments, some salt-fed animals never developed hypertension whereas a few rapidly developed very severe hypertension followed by

4、early death. These marked variations were interpreted to result from differences in genetic constitution.By mating is successive generations only those animals that failed to develop hypertension from salt ingestion, a resistant strain(the R Strain)has been evolved in which consumption of large quan

5、tities of salt参考答案：一、阅读理解：阅读理解（一）答案：ACDDD阅读理解（二）答案：CDCAB二、完型填空完型填空（一）1 .【答案】B按意义选词，肯定知道。2 .【答案】D按意义选词，写出一本好的儿童读物是多么的难，应选goodo3 .【答案】C目标定的太高，应选higho4 .【答案】C根据前面的either推断，应选or。5 .【答案】B依据后文nor应选neither,搭配一致。6 .【答案】A后文who hears the story这一定语暗示应选childo7 .【答案】D按意义选词，读书的成年人，应选readso8 .【答案】A根据unfortunately和

6、in fact应选few。9 .【答案】C得出结论，所以找一本合适的bedtime story这个难题不易解决, 应选SOo10 .【答案】B根据9,应选easyo11 .【答案】D应和句子前面many对应起来，选works,同时应和下文的 “childrens literature 一致。12 .【答案】A根据下文“许多孩子不愿看这一类的儿童文学作品”，所以，这 些作品实际上是给 成年人看的，因此，选grown upso13 .【答案】C Alice s Adventure in Wonderland”这一点最为明显，应选 obviouso14 .【答案】B依据后文interest应选sho

7、w。15 .【答案】D home和office显然不行，school不够具体，太笼统，应选 libraryo16 .【答案】A根据词和文章的意义选择，更愿意选择用想象力的方法写成的书。17 .【答案】C这些书是为老师和思想正统的父母所反对的，应选objections。18 .【答案】B根据意义选词，接受我们对文学的兴趣，应选acceptingo19 .【答案】C毕竟孩子与成人有区别或不同，应选differento20.【答案】D既然孩子与成人有区别或不同，家长不应该期盼家长与孩子欣赏 同样的(same)书。完型填空(二)1. A由文中第一行的digital divide得出答案。2. B ob

8、scure模糊的，不清楚的；visible看得见的，明显的；invisible看不 见的；indistinct不清楚的，模糊的。空格前的less已有否定意义3. A force力量，武力；obstacle障碍；event事件；surprise惊奇，诧异。句 意：现在有新的、乐观的力量来对抗数字鸿沟。4. C seriously 认真地；entirely 完全的；actually 实际上；continuously 连 续地。5. B negative 消极的；optimistic 乐观的；pleasant 令人愉快的;disappointed令人失望的。前文说有积极的力量在对抗数字鸿沟的不利因

9、素，因此，实际上我们有理由保持乐观的态度。6. D develop 发展；centralize 集中；realize 认识到；commercialize 使商业 化，由下文“网络有利于商业途径的普及”，可知此处表述的意思是网络越来 越商业化。in the interest of.为了.的利益7. C user使用者；producer生产者；customer消费者；citizen公民。句意： 越多的人上网就有越多的潜在消费者。8. B enterprise企业，事业；government政府；official官员；句意：越来越 多的政府害怕他们的国家.9. D leave behind留下，超过

10、与leave相关的短语：leave aside把某事搁 置一边leave out省去，遗漏，不考虑leave off停止，不再穿10. A网络把人们联系在一起，选netted11. B decrease减少，narrow变窄；neglect忽视，疏忽；low降低句意：因 此，我现在认为数字鸿沟是在变窄而不是在拓宽12. D contain包含，容纳；prevent防止，阻止;keep保留，保持；combat战 斗，搏斗13. C win赢得;detail详述，细说;defeat击败，战胜；fear畏惧。14. A enormous 巨大的；countless 无数的；numerical 数字的

11、。potential 作 名词为不可数，不能用countless修饰，big 一般表示尺寸、数字、范围上的 大。15. D take advantage of 利用16. B with respect to关于，至于with也可换成in.表示关于的还有withregard to, concerning 等。17. C offence 冒犯；investment 投资；invasion 入侵；insult 侮辱18. C construction 建筑；facility 设备；infrastructure 基础设施；institution公共机构，制度。从后文中出 现的infrastructur

12、e可以轻 易得到答案。19. A表语从句，表示原因，“这也就是为什么.”20. D concerning 关于;concluding 结束的;according 根据；including 包括 三、翻译1、因为大雪，火车晚点了。2、你要提前一小时办理登机手续。3、以音乐形式，也可以表达思想。4、这家商店现在是合法经营香烟。5、你千万要做好保暖措施。fails to influence the blood pressure significantly. In contrast, by mating only animals that quickly develop hypertension fr

13、om salt, a sensitive strain(S strain)has also been developeD.The availability of these tow strains permits investgations not heretofore possible. They provide a plausible laboratory model on which to investigate some clinical aspects of the human prototypes of hypertension. More important, there mig

14、ht be the possibility of developing methods by which genetic susceptibility of human beings to high blood pressure can be defined without waiting for its appearance. Radioactive sodium 22 was an important tool in working out the characteristics of the sodium chloride metabolism.1. The study of the e

15、ffects of salt on high blood pressure was carried out.A. as members of the same family tend to use similar amounts of salt B. to explore the long-term use of a sodium based substance C. because it was proven that salt caused high blood pressure D. because of the availability of chemically pure salt

16、and its derivatives2.The main difference between S and R rats is their.A. need for sodium 22 B. rate of mating C. reaction to salt D. type of blood 3. We can infer from the article that sodium 22 can de used to. A. control high blood pressure B. cure high blood pressure caused by saltC. tell the S r

17、ats from the R rats D. determine what a sodium chloridemetabolism is like4. The most beneficial results of the research might be .A. development of diets free of salt B. an early cure for high blood pressure C. control of genetic agents that cause high blood pressure D. the early identification of p

18、otential high blood pressure victims5. Which of the statements best relates the main idea of this article? A. When salt is added rats and human beings react similarly.B. The near future will see a cure for high blood pressure. C. The medical field is desperately in need of research. D. A tendency to

19、ward high blood pressure may be a hereditary factor.阅读理解（二）In the United States, it is not customary to telephone somenone very early in the morning. If you telephone him early in the day, while he is shaving or having breakfast, the time of the call shows that the matter is very important and requi

20、res immediate attention. The same meaning is attached to telephone calls made after 11:00 p. m. . If someone receives a call during sleeping hours , he assumes its a matter of life or death. The time chosen for the call communicates its importance. In social life, time plays a very important part. I

21、n the U. S.A. guests tend to feel they are not highly regarded if the invitation to a dinner party is extended only three or four days before the party date. But it is not true in all countries. In other areas of the world ,it may be considered foolish to make an appointment too far in advance becau

22、se plans which are made for a date more than a week away tend to be forgotten. The meaning of thime differs in different parts of the worlD. Thus, misunderstandings arise between peopel from cultures that treat time differently. Promptness is valued highly in American life, for edample. If people ar

23、e not prompt, they may be regarded as impolite or not fully responsible. In the U. S. no noe would think of keeping a business associate waiting for an hour , it would be too impolite . A person who is 5 minutes late, he will say a few words of explanation, though perhaps he will not complete the se

24、ntence.1 .“The same meaning is attached to telephone calls made after 11:00 p. m. Here attached meansA. taken B. drawn C. given D. shown2. Supposing one wants to make a telephone call at dawn, this would mean.A. the matter is important B. the matter is somewhat important C. the matter requires immed

25、iate attention D. it is a matter of life and death 3. According to this , time plays an important role in.A. everyday life B.shool life C. communications D. private life4. The best title for this is.A. the voices of time B. the importance of time C. the importance of an ammouncement D. time and tide

26、 wait for no man5. According to the , the author of the article may agree to which of the following statements?A. It is appropriate to send your invitation cards three or four days before a dinner party date in U. S. AB. It may be appropriate to send your invitation to your guests three or four days

27、 before a dinner party date in some cultures.C. It is best for one to make telephone calls at night because it costs much less.D. If one is less than 5 minutes late, he has to make a short apology. 二、完型填空 完型填空(一)Most parents, I suppose, have had the experience of reading a bedtime story to their chi

28、ldren. And they must have 1 how difficult it is to write a 2 children s book.Either the author has aimed too 3 , so that the children can t follow what is in his (or more often, her) story, 4 the story seems to be talking tothe readers. The best children s books are 5 very difficult nor very simple,

29、 and satisfy both the 6 who hears thestory and the adult who 7 it. Unfortunately, there are in fact 8 books like this, 9 the problem of findingthe right bedtime story is not 10 to solve. This may be why many of books regarded as 11 of children s literature were in fact written for 12 . “Alices Adven

30、ture in Wonderland is perhaps the most 13 of this. Children, left for themselves, often 14the worst possible interest in literature. Just leave a child inbookshop o 15 and he will 16 willingly choose the books written in an imaginative way, or have a look at most children s comics, full of the stori

31、es and jokes which are the 17 of teachers and right-thinkingparents. Perhaps we parents should stop trying to brainwash childrensintos 18 our taste in literature. After allchildren and adults are so 19 that we parents should not expect that they will enjoy the 20 books. So I suppose we 11 just have

32、to compromise over that bedtime story.1. A. hoped B. realized C. told D. said2. A. short B. long C. bad D. good3. A. easy B. short C. high D. difficult4. A. and B. but C. or D. so5. A. both B. neither C. either D. very6. A. child B. father C. mother D. teacher.7. A. hears B.buys C. understands D. re

33、ads8. A. few B. many C. a great deal of D. a great number of9. A. but B. however C. so D. becauselOA. hard B. easy C. enoughD. fast11. A. articles B. work C. arts D. works12. A. grown ups B. girls C. boys D.children13. A.difficult B. hidden C.obvious D. easy14. A. are B. show C. find D. add15. A. sc

34、hool B. home C. office D. library16. A. more B. less C. able D. be17. A. lovingness B. interests C.objections D. readings18. A. receiving B. accepting C. having D. refusing19. A. same B.friendly C. different D. common20. A. common B.avarage C.different D. Same完型填空(二)A great deal of attention is bein

35、g paid today to the so-called digital divide-the division of the world into theinfo (information) rich and the info poor. And that 1 does exist today. My wife and I lectured about this loomingdanger twenty years ago. What was less 2 then, however, were the new, positive 3that work against thedigital

36、 divide.4, there are reasons to be 5 There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more6, it is in the interest of business to universalizeaccess-after all, the more people online, the more potential _7 there are. More and more 8, afraid the

37、ir countries will be left 9, want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be 10_ together. As a result, I now believe the digital divide will 11 rather than widen in the years ahea D. And that is very good news because the Internet may w

38、ell be the most powerful tool for 12 world poverty that weve ever ha D. Of course,the use of the Internet isn，t the only way to 13 poverty. And the Internet is not the only tool we have. But it has 14 potential. To 15 advantage of this tool, some poor countries will have to get over their outdated a

39、nti-colonial prejudices 16 respect to foreign investment. Countries that still think foreign investment is a/an 17 of their sovereignty might well study the history of 18 (the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure,

40、 it didnt have the capital to do so. And that is 19 Americas Second Wave infrastructure-20roads, harbors, highways, ports and so on-werebuilt with foreign investment.1. A) divide B) information C) world D) lecture2. A) obscure B) visible C) invisible D) indistinct3. A) forces B) obstacles C) events

41、D) surprises4. A) Seriously B) Entirely C) Actually D) Continuously5. A) negative B) optimistic C) pleasant D) disappointed6. A) developed B) centralized C) realized D) commercialized7. A) users B) producers C) customers D) citizens8. A) enterprises B) governments C) officials D) customers9. A) away

42、 B) for C) aside D) behind10. A) netted B) worked C) put D) organized11. A) decrease B) narrow C) neglect D) low12. A) containing B) preventing C) keeping D) combating13. A) win B) detail C) defeat D) fear14. A) enormous B) countless C) numerical D) big15. A) bring B) keep C) hold D) take16. A) at B

43、) with C) of D) for17. A) offence B) investment C) invasion D) insult18. A) construction B) facility C) infrastructure D) institution19. A) why B) where C) when D) how20. A) concerning B) concluding C) according D) including三、翻译1、 The train was delayed on account of snow.翻译：.2、 You need to check in on hour before the flight.翻译：3、 Thoughts can also be expressed by means of musiC.翻译：4、 The shop is now licensed to sell cigarettes.翻译：5、You mustn, t let the body temperature drop too low.翻译: