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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)The United States is a federal union of 50 states. The capital of national government is in Washington, D. C. (District of Columbia). The federal constitution sets up the structures of the national government and lists its powers and activities. The constitution gives Congres
2、s the authority to make laws which are necessary for the common defense and the good of the nation. It also gives the federal government the power to deal with national and international problems that involve more than one state. All powers that are not given to the federal government by the constit
3、ution are the responsibility of the individual states.The federal government has three branches一一the executive, the legislative, and the judicial. The legislative brandch makes the laws, executive branch carries out the laws, and judicial branch interprets the laws. The President heads the executive
4、 branch and the Supreme Court heads the judicial branch. The legislative branch includes both houses ofCongress一一the Senate and the House of Reprsentatives. The constitution limits the powers of each branch and prevents one branch from gaining too much power. For example, Congress can pass a Law the
5、 President may sign it. Nevertheless, the Supreme Court can declare the law unconstitutional 参考答案：一、阅读理解：阅读理解（一）答案：ABCDB阅读理解（二）答案：ACBDC二、完型填空1 .【答案】A根据上文中的heavier and lighter gases可以确定，本空中应 填入“组成的气体“，即constituent gaseso2 .【答案】C根据句子意思判断,句中的词意为微粒的意思，选项C. tiny合 乎题意。3 .【答案】D情态动词must在这里是“必定、必须”的意思。4 .【答案
6、】Bsky意为“天空” ,atmosphere意为“大气”，oxygen意为“氧 气”，environment意为“环境”，只有B项正确。5 .【答案】C这帮助解释了大气组成气体的比例确定原理。因为是特指这一原 理，用定冠词the。6 .【答案】A only necessary的意思是“仅仅是必要”。故A正确。7 .【答案】D根据句子意思判断，could是“能够”的意思。8 .【答案】B根据句子意思判断，这里需要“结构”这个词，而B合乎题意。9 【.答案】C but, nevertheless表示转折意为“但是”，“然而；thus意 为“因止匕，如 There has been no rain
7、. Thus, the crops are likely to suffer.一直没有下雨，因此庄稼可能会受害。这里与上文有因果 关系，故应选Co10 .【答案】A solve 相当于 find a solution or an answer to,意为“解决”、“角军开”，如：solve a problem (a puzzle, a mystery) ； discover 相当于 find something existing but not known before,意为“发现，如：discover a place (a fact, the truth) o因此应选 AoIL【答案】D因为
8、是表一般规律，又是单数，所以用is这个词。12 .【答案】B Pair这里是“匹配，配成双”的意思。13 .【答案】A while 表示对比。如：Some substances are soluble, while others are not.一些物质是可 溶的，而另一些物质是不可溶的。【答案】C根据句子意思判断，atom正确。【答案】C of表示“含量，分量”。16.【答案】A then的意思是next, after thato【答案】D for的意思是“对于，就而言”。【答案】C根据句子意思判断。19 .【答案】B describe意为“描述；unite意为“结合，合并”；mix意 为“
9、（不同的东西）混合在一起如：mix flour and water； reveal意为“揭露，揭示 o20 .【答案】A根据句子意思判断.完型填空(二)案：1. A 2. C 3.B 4. D 5.B 6. C 7. B 8.A 9.A 10. D 11. C 12. A 13. C 14. B 15. D16. C 17. B 18. C 19. A 20, D三、单词拼写1. forties2. hearing3. comfortably4. Wednesday5. fitterand nullify it.All government in the United States is of
10、 the people, by the people and for the people”.The people elect the President and the members of Congress. However, the President appoints the heads of federal departments and the Supreme Court judges. Every citizen votes in secret. Consequently,no one knows for whom and indevidual votes. The people
11、 believe that their government should provide a frameword and order within which they are left free to run their own lives.1. Who makes the laws?A. The Congress. B. The Federal government. C. The President. D. The supreme Court.2. The capital of the United States lies in.A. the state of the Columbia
12、B.none of the fifty statesC. the state of New YorkD.the state of Washington3. Based on what you can know from the , which of the following statements is true?A. The heads of federal departments are elected by the people.B. The President sets up the structures of the federal governmentC. The judicial
13、 branch has the authority to explain the laws.D.The constitution gives all powers to the federal government.4. The constitution limits the powers of each branch of the federal government because.A.the U. S. has fifty statesB. the individual states have their own governmentsC. the federal government
14、has three branchesD. any one branch should not have too much power5. The main point of this is .A.the three branches of the U. S. governmentB. American governmentC. the Federal ConsititutionD.the people should be left free to run their own lives 阅读理解（二）Kite flying is the sport of sending up into the
15、 air, by means of the wind , a light frame covered with paper, plastic or cloth. The frame can be one of many different shapes and is attached to a long string held in the hand or wound on a drum. Kites have a long history of practical application and many different types of kite have been debeloped
16、 to serve various purposes.The ancient Chinese used bird-kites to carry ropes across rivers and valleys. The current folding kite which will dive excitingly is an improved type of such a kite. With its long flat body and single pair of bird-like wings, it looks just like a large bird in the air. The
17、 modernversion is usually made of tissue-paper rather than the traditional silk.Man-lifting kites were developed in ancient times, again by the Chinese, for getting information from walled cities and army camps. In fact , as recently as world 2 , German U-boats flew kites from their towers to lift p
18、eople into the air to watch the lanD. These kites , which are no longer in existence, were made of light-weight cloth. They were much larger and stronger than the Chinese ones. Their design, however, was simply that of the cutter kite. Smaller in size,this type of kite is still very popular as a toy
19、 for children, being easy to make with a diamond-shaped frame, no wings and brown-paper covering. Box-kites are another type of kite found in toy shops today. The first box-kite, named for its box-like body, was developed in the nineteenth century to test theories of flight and this type of cotton-c
20、overed kite greatly assisted the success of early aeroplane. These kites are the ancestors of a heavier version of the box-kite, which consists of two main sections, placed side by side. Developed for the peacetime purpose of fishing in strong sea wind, it is the only modern kite described which has
21、 practical value . A long-lasting plastic material has to be used for this kite, which carries fishing lines.1. The ancient Chinese bird-kites were usually made of light frames covered with.A. silk B. paper C.cloth D.plastic2. The kites used by German U-boats in would war 2 for the military purpose
22、were made of .A. brown paper B.plastic material C.light-weight cloth D.traditional silk3. The ancient Chinese man-lifting kites were used.A.to carry ropes across rivers and valleys B.for the military purposeC. as toy for children D. for fishing in strong sea wind4. Which of the following statements
23、is not ture?A. The frame of a kite is attached to long string held in the hand or wound on drum. B.The ancestor of the double box-kite. C. The cutter kite has a diamond-shaped body but no wings. D.The current folding kite is developed to test theories of flight.5. The best title for this may be.A. T
24、he ancestors of modern kites B.The history of the Chinese kitesC. different types and uses of kites D. the different between ancient and modern kites.二、完型填空完型填空（一）Dalton wondered why the heavier and lighter gases in the atmosphere did not separate as oil andwater do. He finally concluded that the co
25、nstituent 1 must exist in the form of 2 particles or atoms andthat these 3 be completely mixed together in the 4 . This threw a new light in 5 laws ofdefiniteproportions.It was 6 necessary to suppose that the atoms 7 combinesintossmall groups of uniform 8 andso form more complex substance;9 the myst
26、ery of this law was 10 . Dalton suggested, for example, thatcarbon monoxide 11 formed bythe one with one 12 of atoms of carbon and oxygen, 13 carbon dioxideresults from a single 14 of carbon uniting with two atoms 15 oxygen. Assuming this to be true, 16 thedefinite proportions of Prouts law (17 all
27、chemical compounds the different constituents 18 enter inunvarying proportions) would naturally 19 the relative weights of the many 20 kinds of atoms.1. A. gases B. pieces C. things D. gas2. A. timely B.trimmed C.tiny D.topical3. A. ought B. could C. will D. must4. A. sky B. atmosphere C.oxygen D. e
28、nvironment5. A. various B. many C. the D. those6. A. only B. too C. that D. extremely7. A. should B. were C. get D. could8. A. construct B.structure C.piece D.feature9. A. but B. also C.thus D. nevertheless10. A.solved B.discovered C. broked D.told11. A. must B. been C. were D. is12. A.putting B.pai
29、ring C.placing D.preparing13. A. while B.when C.therefore D. also14. A. piece B. type C. atom D. measure15. A. from B. in C. of D. for16. A. then B. so C. by D. that17. A. from B. in C. to D. for18. A. are B. wouldn, tC. always D.never19. A. describe B. unitC. mix D. reveal20.A.different B.usual C.
30、important D.chemical 完型填空（二）Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is 1only among those with whom he is acquainte D. When a stranger is at present, he often seems nervous, 2 embarrasse D. You have to take a commutertrain any morning or evening to
31、 3 the truth of this.Serious-looking businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite offensive.4, there is an unwritten but clearly understood code of behavior which, 5 broken, makes the offender immediately the
32、 object of 6. It has been known as a fact that thea British has a 7 for the discussion of their weather and that, if given a chance, he will talk about it 8Some people argue that it is because the British weather seldom 9 forecast and hence becomes a source of interest and 10 to everyone. This may b
33、e so.11 a British cannot have much 12 in the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong 13 a cloud over the Atlantic brings rainy weather toall districts! The man in the street seems to be as accurateor asinaccurateas the weathermen in his 14.
34、Foreigners may besurprised at the number of references 15 weather that the Britishmake to each other in the course of a single day. Very often conversational greetings are 16 by comments on the weather. Niceday, isnt it? “Beautiful!” may well be heard instead of Good morning, how are you? 17 the for
35、eigner may consider this exaggerated and comic, it is worthwhile pointing out that it could be used to his advantage. 18 he wants to start a conversation with a British butis 19 to knowswheresto begin, he could do well to mention the stateof the weather. It is a safe subject which will 20 an answer
36、fromeven the most reserved of the British.1. A. relaxed B.frustrated C. amused D. exhausted2. A. yet B. otherwise C. even D. so3. A. experience B. witness C. watch D. undergo4. A. Deliberately B.Consequently C. Frequently D. Apparently5. A. unless B. once C. while D. as6. A. suspicion B.opposition C
37、. criticism D. praise7. A. emotion B. fancy C. likeliness D. judgement8. A. at length B. to a great extent C. from his heart D. by all means9. A. follows B.predicts C. defies D. supports10. A. dedication B. compassion C. contemplation D. speculation11. A.StillB. Also C. CertainlyD.Fundamentally12. A
38、.faithB. reliance C. honorD.credit13. A.if B.once C. when D. whereas14. A.propositions B.predictionsC.approvalD.defiance15. A.aboutB. on C. in D. to16. A. started B.conducted C. replaced D. proposed17. A. Since B. Although C. However D. Only if18. A. Even if B. Because C. If D. For19. A. at a loss B
39、. at last C. insgroups D. on the occasion20. A. stimulate B.constitute C. furnish D. provoke三、单词拼写1. Mr. Li moved to the seashore in his f（四十来岁）.2. H（听至U） the good news, we all jumped with joy.3. I changed into my sports shoes so that I could walk more c（舍子 服）.4. W（星期三）is the fourth day of a week.5. Walking every day keep me f（健康）than before.