2020年大学英语四级阅读理解练习题及解析(2)
(完整版)英语四级阅读理解练习题及解析(2)
英语四级阅读理解练习题及解析(1)【阅读练习】What is it about Americans and food? We love to eat ,but we feel 1 about it afterward. We say we want o nly the best, but we strangely enjoy junkfood. We’re 2 with health and weight loss but face an unprec edented epidemic of obesity(肥胖). Perhaps the 3 to this ambivalence(矛盾情结) lies in our history. The first Europeans cameto this continent searching for new spices but went i n vain. The first cash crop(经济作物)wasn’t eaten but smoked. Then there was Prohibi tion, intended to prohibit drinking butactually enc ouraging more 4 ways of doing it.The immigrant experience, too, has been one of inha rmony. Do as Romans do meanseating what “real Amer icans” eat, but our nation’s food has come to be 5 by imports—pizza,say, or hot dogs. And some of the country’s most treasured cooking comes from peo ple whoarrived here in shackles.Perhaps it should come as no surprise then that foo d has been a medium for the nation’sdefining strug gles, whether at the Boston Tea Party or the sit?in s at southern lunch counters.It is integral to our concepts of health and even morality whether one re frains from alcohol forreligious reasons or evades meat for political 6But strong opinions have not brought 7 . Americans are ambivalent about what they putin their mouths. We have become 8 of our foods, especially as we lea rn more about what theycontain.The 9 in food is still prosperous in the American c onsciousness. It’s no coincidence, then,that the f irst Thanksgiving holds the American imagination in such bondage(束缚). It’s whatwe eat—and how we 10 it with friends, family, and strangers—that help define America as acommunity today.A. answer I. creativeB. result J. beliefC. share K. suspiciousD. guilty L. certaintyE. constant M. obsessedF. defined N. identifyG. vanish O. idealsH. adapted【答案及详解】1. D feel是一个系动词，可以判断此处应填入一个形容词，通过上下文意思，以及后面介词about, 可以确定选项为D项guilty, 短语feel guilty about sth. “对……感到有愧”。
2020年12月大学英语四级考试题(二)含答案
12.
A.At a travel agency. C.At an airline transfer service.
13.
A.She would be able to visit more scenic spots. C.She would like to have everything taken care of.
B.She wanted to save as much money as possible. D.She wanted to spend more time with her family.
C.One week.
D.Two weeks.
B.Spending Christmas with Australians. D.Learning more about wine making.
B.The cost of a solar panel installation. D.The quality of the solar panels.
C.Roughly six years.
D.About five years.
Questions 12 to 15 are based on the conversation you have just heard.
17.
A.It has not been doing a good job in recycling. C.It has not attracted many tourists in recent years.
B.It has witnessed a rise in accidental drowning. D.It has experienced an overall decline in air quality.
2020年全国公共英语四级试题及答案(卷二)
2020年全国公共英语四级试题及答案（卷二）1. He told me that the firm could not afford __ such large salaries.A. payingB. to payC. to have paidD. being paid2. She has travelled in __ countries.A. southB. northC. northernD. northwest3. The plane was then able to __ and it cleared the mountains by 400 feet.A. riseB. raiseC. ariseD. rouse4. He had __ to go because he doesn't get on well with others.A. everywhereB. anywhereC. somewhereD. nowhere5. Don't be so __; I'm not telling you what I've promised not to say.A.oddB.shockedC.strangeD.curious6. He __ his previous best performance in the 1000 meters.A. improvesB. improves onC. bettersD. proves7. I __ to interrupt a man when he's busy working.A. envyB. hateC. admireD. improve8. he was astonished __ what he found.A. atB. toC. forD. on9. They made no effort to hide their amusement __ I produced a packet of sweets from my pocket.A. whateverB. whereverC. whoeverD. whenever10. I had hoped to get $1000 for my old car but had to __ a lot less.A. settle downB. settle inC. settle forD. settle on1. B2. C3. A4. D5. D6. B7. B8. A9. D 10. C【知识点】1. afford 后常接动词的不定式，所以应该选B："to pay".3. 此处只能选择一个不及物动词作答案4. 句子的意思为："他没有什么地方去因为与别人相处不好"__ everywhere：每处__ anywhere：无论何处__ somewhere：某处__ 所以，只有nowhere符合题意。
2020年大学英语四级考试真题及解析(第二套)
2020年大学英语四级考试真题及解析（第二套）一、PartⅠWriting(30minutes)1.Directions:For this part,you are allowed30minutes to write an essay on the use of PowerPoint(PPT)in class.You can start your essay with the sentence“The use of PowerPoint is becoming increasingly popular in class”.You should write at least120words but no more than180words.输入答案内容...【答案】【参考范文】In recent years,using PPT is becoming increasingly prevalent among teachers while having classes.PPT can present knowledge in a clearer way, which will be more convenient for students to digest.And for teachers, PPT also rescues them from writing on the blackboard,which is sometimes a heavy work.Besides,PPT can be saved and copied for students to review after class.But for people who prefer the traditional class,they think PPT can never replace the blackboard.As when having class with PPT,students have less time taking notes.Meanwhile,some teachers say preparing PPT is very time-consuming and not efficient at all.From what has been discussed above,PPT does have strengths and weaknesses.But I believe it brings so much convenience for us that we can ignore the few weakness it has.And when using it,we can still take the blackboard as an aid so as to present the class in the best way.【审题构思】本次考查的话题“PowerPoint”贴近于生活，让考生就课堂使用PPT的现象，发表自己的看法。
2020年四级考试阅读习题及答案解析(2)
2020年四级考试阅读习题及答案解析(2)篇章词汇题型的特点篇章词汇 ( Banked Cloze )考一篇长度为 220 个单词左右的文章，在文章当中去除了 10 个单词，后面由 15 个单词选项，要求考生选择准确的单词填入文章。
这种题型的测试重点在于把握文章的结构，主要考查考生对诸如连贯性，一致性，逻辑联系等语篇，语段整体特征以及单词在实际语境中的理解，即要求考生在理解全文的基础上弄清文章的宏观结构和具体细化到每个单词的微观理解。
篇章词汇 VS 完形填空应该说，篇章词汇是完形填空的一种形式。
完形填空的测试面更宽泛，涉及连词，介词等更多的语法知识，而篇章词汇的考查项都是实词(动词，名词，形容词，副词)。
篇章词汇更侧重于从篇章层面考查对单词的理解和应用。
另外一个较为明显的区别就是，篇章词汇是集合式选项，所有的选项都集中在一起;而完形填空是分组式选项，各道题目的选项互不干扰。
篇章词汇 VS 词汇题篇章词汇与原来的老题型词汇题相比，更注重对词汇的实际使用的考查，从单一的一句话考查上升到篇章的理解。
Passage 2Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity. Behaviorists, who study the relation between actions and their consequences, argue that rewards can __1__ performance at work and school. Cognitive( 理解派的 ) researchers, who study various aspects of mental life,maintain that rewards often destroy creativity by encouraging dependence on __2__ and gifts from others.The latter view has gained many supporters, __3__ among educators. But the careful use of small __4__ rewards speaks creativity in grade school children, suggesting that properly presented inducements( 刺激 ) indeed __5__inventiveness, according to a study in the June Journal of Personality and Social Psychology.“If kids know they’re working for a reward and can focus on a relatively __6__ task, they show the most creativity,” says Robert Eisenberger of the University of Delaware in Newark. “But it’s easy to __7__ creativity by giving rewards for poor performance or creating too much anticipation for rewards.A teacher who continually draws attention to rewards or who hands our high grades for __8__ achievement ends up with uninspired students, Eisenberger holds. As an example of the latter point, he notes growing efforts at major universities to tighten grading standards and __9__ failing grades.In early grades, the use of so-called token economies, in which students handle challenging problems and receive performance-based points to ward valued rewards, shows __10__ in raising efforts and creativity, the Delaware psychologist claims.A)mental B)promise C)kill D)avoidE)hope F)especially G)aid H)ordinaryI)approval J)monetary K)generally L)improveM)challenging N)restore O)excellent参考答案及解析：1. 选 L )。
2020年9月英语四级模拟题及答案解析(二)
2020年9月英语四级模拟题及答案解析（二）2020年9月四级考试在即，松鼠哥今天为大家整理了2020年9月英语四级阅读理解和写作的模拟题及答案解析。
同学们在做完试题后，一定要认真对答案并找出自己做错的原因。
大家加油呀，冲冲冲！祝大家都能高分通过考试！Part ⅢReading Comprehension (35 minutes)Directions: There are 4 passages in this part.Each passage is followed by some questions or unfinished statements.For each of them there are four choices marked A),B),C) and D).You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.Questions 21 to 25 are based on the following passage:Some radio singals were heard in 1967.They were coming from a point in the sky where there was unknown star.They were coming very regularly,too:about once a second,if they were controlled by clock.The scientists who heard the signals did not tell anybody else.They were rather afraid to tell in case they frightened people.The signals were coming from a very small body—no bigger,perhaps than the earth.Wasthat why no light could be seen from it?Or were the signals coming from a planet that belonged to some other star? There was no end to the questions,but the scientists kept the news secret.“Perhaps there are intelligent beings out there.”they thought,“who are trying to send messages to other planets,or to us?So the news was not given to the newspaper.Instead,the scientists studied the signals and searched for others like them...Well,all that happened in 1967 and 1968.Since then scientists have learnt more about those strange,regular,radio signals.And they have told the story,of course.The signals do not come from a planet;they come from a new kind of star called a “pulsar””.About a hundred other pulsars have now been found,and most of them are very like the first one.Pulsars are strong radio stars.They are the smallest but the heaviest stars we know at present.A handful of pulsar would weigh a few thousand tons.Their light—if they give much light—is too small for us to see.But we can be sure of this,no intelligent beings are living on them.21. The radio signals discussed in this passage____.A.were regularB.were controlled by a clockC.were heard in 1967 onlyD.were secret messages22. The radio singals were sent by____.A.a satelliteB.a planetC.a sky body which was unknown at that timeD.intelligent beings who were unknown at that time23. The scientists did not tell people about the signals because____.A.the singals stood for secret messagesB.people would ask them too many questionsC.they did not want to frighten peopleD.they stood for unimportant messages24. A pulsar is____.A. a small heavy star which sends out strong radio signals and cannot be seenB. a small heavy planet which sends out strong radio signals and cannot be seenC. a small heavy satellite which sends out strong radio signals and cannot be seenD. a small intelligent being who sends out strong radio signals and cannot be seen25. Which of the following is true?A.One of the pulsars found by scientists sends radio signals.B.Pulsar began to send radio singals in 1967.C.Scientists have searched for pulsars for many years but found none.D.Scientists have found many pulsars since 1967. rn life and ancient life.27. “one out of seven”refers to____.A.more than a third of the lands' earthB.the percentage of the earth's land that is desert-likeC.the number of people who live in dry regionsD.a day of a week28. In paragraph 2,“they are taken to the greener lands in the south.”They refers to____.A.the Sahel farm landB.the farmersC.the cattlesD.the trees29. How many ideas for saving the land are described?A.Five.B.Two.C.Four.D.Three.30. Which of the following statements is true, according to the passage?A.The earth's desert are slowly spreading.B.One out of 10 people lives in dry regions.C.Their life in the desert is threatened now by traditional problems.D.New water wells can solve the problem in Africa's desert.Questions 31 to 35 are based on the following passage:Telephone, television, radio, and telegraph all help people communicate with each other. Because of these devices, ideas and news of events spread quickly all over the world. For example, within seconds, people can know the results of an election in another country. An international football match comes into the homes of everyone with a television set.News of a disaster such as an earthquake or a flood can bring help from distant countries within hours, help is on the way. Because of modern technology like the satellites that travel around the world, information travels fast.How has this speed of communication changed the world? To many people,the world has become smaller. Of course this does not mean that the world is actually physically smaller. It means that the world seems smaller. Two hundred years ago,communication between the continents took a long time. All news was carried on ships that took weeks or even months to cross the ocean. In the seventeenth and eighteenth centuries,it took six weeks for news from Europe to reach America.This time difference influenced people's actions. For example, one battle, orfight, in the War of 1812 between England and the United States could have been avoided. A peace agreement had already been signed. Peace was made in England, but the news of peace took six weeks to reach America. During these six weeks, the large and serious Battle of New Orleans was fought. Many people lost their lives after a peace treaty had been signed.They would not have died if news had come in time.In the past,communication took much time than it does now.There was a good reason why the world seemed so much larger than it does today.31. News spreads fast because of____.A.modern transportationB.new technologyC.the change of the worldD.a peace agreement32. According to this passage,____is very important to people in a disaster area.A.fast communicationB.modern technologytest newsD.new ideas33. Which of the following statements is true?A.The world now seems smaller because of faster communication.B.The world is actually smaller today.C.The world is changing its size.D. The distance between England and America has changed since the War of 181234. Two hundred years ago,news between the continents was carried____.A.by telephone and telegraphB.by landC.by airD.by sea35. The New Orleans Battle could have been avoided if the peace agreement had been signed____.A.by both sidesB.in timeC.in AmericaD.in EnglandQuestions 36 to 40 are based on the following passage:The concept of personal choice in relation to health behaviors is an important one.An estimated 90 percent of all illnesses may be preventable if individuals would make sound personal health choices based upon current medical knowledge.We all enjoy our freedom of choice and do not like to see it restricted when it is within the legal and moral boundaries of society.[ZZ)]The structure of American society allows us to make almost all our own personal decisions that may concern our health.If we so desire,we can smoke,drink excessively, refuse to wear seat belts,eatwhatever foods we want,and live a completely sedentary life-style without any excuse.The freedom to make such personal decisions is a fundamental aspect of our society,although the wisdom of these decisions can be questioned.Personal choices relative to health often cause a difficulty.As one example,a teenager may know the facts relative to smoking cigarettes and health but may be pressured by friends into believing it is the socially accepted thing to do. A multitude of factors,both inherited and environmental,influence the development of health related behaviors,and it is beyond the scope of this text to discuss all these factors as they may affect any given individual.However,the decision to adopt a particular health-related behavior is usually one of personal choices.There are healthy choices and there are unhealthy choices.In discussing the moral of personal choice,Fries and Crapo drew a comparison.[ZZ(Z]They suggest that to knowingly give oneself over to a behavior that has a statistical probability of shortening life is similar to attempting suicide.[ZZ)]Thus,for those individuals who are interested in preserving both the quality and quantity of life,personal health choices should reflect those behaviors that are associated with statistical probability of increased vitality and longevity.36. The concept of personal choice concerning health is important because____.A.personal health choices help cure most illnessesB.it helps raise the level of our medical knowledgeC.it is essential to personal freedom in American societyD.wrong decisions could head to poor health37. To “live a completely sedentary life style”(Para. 1) in the passage means____.”A.to live an inactive lifeB.to live a decent lifeC.to live a life with complete freedomD.to live a life of vice38. Sound personal health choice is often difficult to make because____.A.current medical knowledge is still insufficientB.there are many factors influencing our decisionsC.few people are willing to trade the quality of life for longevityD.people are usually influenced by the behavior of their friends39. To knowingly allow oneself to pursue unhealthy habits is compared by Fries and Crapo to____.A.improving the quality of one's lifeB.limiting one's personal health choiceC.deliberately ending one's lifeD.breaking the rules of social behavior40. According to Fries and Crapo sound health choices should be based on____.A.personal decisionsws of societyC.statistical evidenceD.opinions of friendsPart ⅤWriting (30 minutes)Directions:For this part,you are allowed 30 minutes to write a composition with the title ON Friendship.Your composition should be no less than 120 words.Remember to write your composition neatly.You should also base your composition on the outline below.1.The need for friends2.True friendship3.My principle in making friends答案1短文大意1967年人类收到了一些太空信号。
大学英语英语四级练习题(含答案) (2)
大学英语四级试卷（满分120分，考试时间90分钟）一、选择题：（本题共20小题，每小题3分，共60分）1. As Mr Best was passing the bookshop, he thought he’d just _____ to see whether any interesting books were on sale.A. look inB. look upC. look roundD. look for2. Marge’s bedroom was in a _______, with books and papers covering every possible surface.A. littleB. messC. rubbishD. disorder3. Burton said he could not swim until the ______ came in because the sea was too for out.A. currentB. tideC. waterD. flood4. The highest ______ of the Himalayas can scarcely be seen from below as it is usually hidden in cloud.A. peakB. topC. viewD. plane5. Tim, the footballer, always scores ______ at football matches, but he feels frustrated at each examination.A. pointsB. gamesC. goalsD. targets6. The TV station probably will be back _______ no earlier than this afternoon because of difficulties in locating a part.A. in the airB. on the airC. in airD. to the air7. He is indifferent ______ hardships and dangers.A. ofB. atC. inD. to8. Mary really couldn’t stand the music by Richard Wagner, _____ Davidcouldn’t hear enough of it.A. becauseB. whereasC. althoughD. when9. The scientists realized it would be too _______ to lift the ship in one piece because it was fragile.A. boldB. doingC. riskyD. dangerous10. We think this patient is going to be _____ on Tuesday by Dr Smith.A. HandledB. inspectedC. operatedD. examined11. _____ a machine, she met with a lot of difficulties at first.A. Having never handledB. Never handlingC. Having handled neverD. Never handled12. It's no use _____ that you don't understand their dialect.A. pretendingB. pretendedC. pretendD. to pretend13. It's Sunday today. You needn't _____ so early this morning.A. got upB. to get upC. getting upD. have got up14. The collapse of the World Trade Center has put US economy in a difficult ______.A. occasionB. caseC. backgroundD. situation15. Mother made a cake ______ for me.A. speciallyB. especiallyC. particularlyD. essentially16.- Are you a singer as well as an actress?( )-No. it's not a singer___.A. at allB. after allC. in allD. for all17.We spent half an hour waiting for the bus.( )finally we went home on foot.A. Of forB. Or tooC. So muchD. but18.Every morning my little dog is the first____ up at my bed and gentiy wake me up.( )A. Turns isB. to turnC. Turn toD. turning19.--i introduce myself? My name is Meg Johnson.( )Nice to meet you, Mr. Johnson.A. Must isB. ShouldC. Need netD. Mays20.The boss made them.___ten hours day. ( )A.worked toB.workingC.workD.to work二、翻译（共5小题，每小题3分；共计15分）1、所有的窗户都开着，他就睡着了。
大学英语四级练习卷+答案解析 (2)
大学英语四级试卷（满分120分，考试时间90分钟）一、选择题：（本题共20小题，每小题3分，共60分）1. The news, though not wholly bad was so _____ that I could no longer concentrate on my work.A. disastrousB. anxiousC. RegretfulD. disturbing2. The energy gained from the sun can then be used during the right to enable the necessary chemical reactions to ______ in his body.A. prB. proceedC. progressD. practise3. It is very likely that the Martian will also be ________ to underground existence,for conditions are much more equable underground.A. adoptedB. acquiredC. admittedD. adapted4. If one slat in a Venetian blind is ________ in the wrong direction, Murray can’t have a moment’s peace until he has fixed it.A. tippedB. toppedD. toyed5. The Chairman was evidently _____ by Jim’s words and glared at him for a few seconds.A. put downB. put acrossC. put awayD. put out6. Burton said he could not swim until the ________ came in because the sea was too for out.A. currentB. tideC. waterD. flood7. The highest _______ of the Himalayas can scarcely be seen from below as it is usually hidden in cloud.A. peakB. topC. viewD. plane8. Tim, the footballer, always scores ______ at football matches, but he feels frustrated at each examination.A. pointsB. gamesC. goals9. After the cameraman had taken three or four photographs of the solider ants, he found they had _______ all over his feet.A. gatheredB. flockedC. crowdedD. swarmed10. Sylvia was in low spirits because her throat infection left her very _____ and made her solo at the party impossible.A. dumbB. hoarseC. silentD. speechless11. Any child who is _______ made a victim of violence from brothers or sisters will have emotional troubles when he grows up.A. repeatedlyB. quicklyC. brisklyD. rarely12. Fred has _____ kind of humour that can only be appreciated by these willing to search beneath the surface.A. on obviousB. a hiddenC. a subtleD. controlled13. The crippled Westkey proudly walked with a ________ to the platform to join the children.A. jumpB. limpC. hopD. jog14. The ________ crown jewels are kept in the Tower of London.A. valuedB. valuelessC. invaluableD. usable15. We expect Mr Drew will _________ Class Two when Miss Syme retires.A. take overB. toke upC. take offD. take to16. If the sun ______, the players could have finished the game.A. had shineB. did shineC. were shiningD. had shone17. If she ______ the measles, she could have gone to the park.A. hadn'tB. hadn't hadC. had hadD. haven't18. If we _______, we could have made it.A. had worked hardB. would have worked hardC. did worked hardD. work hard19. The policemen would have caught the murderer _______ a few minutes earlier.A. were they to arriveB. had they arrivedC. if they should have arrivedD. if they would have arrived20. Had Paul received six more votes in the last election, he _______ our chairman now.A. must have beenB. would have beenC. wereD. would be二、完型填空（共计20分）Reading involves looking at graphic symbols and formulating mentally the sounds and ideas theyrepresent.Concepts of reading have changed 1 over the centuries.During the 1950's and 1960's especially,increased attention has been devoted to 2 the reading process. 3 specialists agree that reading 4 acomplex organization of higher mental 5 , they disagree 6 the exact nature of the process.Some experts,who regard language primarily as a code using symbols to represent sounds, 7 reading as simply thedecoding of symbolssintosthe sounds they stand 8 .These authorities 9 that meaning, being concerned with thinking, must be taught independently ofthe decoding process.Others maintain that reading is 10 related to thinking, and that a child whopronounces sounds without 11their meaning is not truly reading.The reader, 12 some, is not just aperson with a theoretical ability to read but one who 13 reads.Many adults, although they have the ability to read, have never read a book in its 14 .By someexpert they would not be 15 as readers.Clearly, the philosophy, objectives, methods and materials ofreading will depend on the definition one use.By the most 16 and satisfactory definition, reading is theability to 17 the sound-symbols code of the language, to interpret meaning for various 18 , at variousrates, and at various levels of difficulty, and to do 19 widely and enthusiastically. 20 reading is theinterpretation of ideas through the use of symbols representing sounds and ideas.1.A.substantively B. substantially C.substitutively D.subjectively2.A.define and describe B. definition and descriptionC.defining and describingD.have defined and described3.A.Although B. If C.Unless D.Until4.A.involves B. involves to C.is involved D.involves of5.A.opinions B. effects C.manners D.functions6.A.of B. about C.for D.into7.A.view B. look C.reassure D.agree8.A.by B. to C.off D.for9.A.content B. contend C.contempt D.contact10.A.inexplicably B. inexpressibly C.inextricably D.inexpediently11.A.interpreting B. saying C.explaining D.reading12.A.like B. for example C.according to D.as13.A.sometimes B. might C.practical D.actually14.A.entire B. entirety C.entirely D.entity15.A.classed B. granted C.classified D.graded16.A.inclusive B. inclinable C.conclusive plicated17.A.break up B. elaborate C.define D.unlock18.A.purposes B. degrees C.stages D.steps19.A.such B. so as C.so D.such as20.A.By the way B. In short C.So far D.On the other hand三、阅读理解：(共25分)George Washington did not wish to commute far from Mount Vernon c.a tidal river nearby made for easy ocean access d.Virginia wanted to get rid of some land PETS3 Text 1 After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day. There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (Although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement.If you have trouble falling asleep, some people recommend breathing very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion the counting sheep will put you to sleep!1. A good title for this is ____.A. SleepC. DreamsB. Good HealthD. Work and Rest2. The word drowsy in the last paragraph means ____.A. sickC. asleepB. stand upD. a little sleepy3. This suggests that not getting enough sleep might make you_____.A. dream more often C. nervousB. have poor health D. breathe quickly4. During REM, ____.A. your eyes move quickly C. you are restlessB. you dreamD. both A and B5. The average number of hours of sleep that an adult needs is ______ .A. approximately six hoursB. around ten hoursC. about eight hoursD. not stated here四、书面表达：草拟一份中学通知，用一段话说明以下要点：参观日期：5月25日，星期天时间：早上8点钟出发。
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2020年大学英语四级阅读理解练习题及解析(2)
Passage 2
The human brain contains 10 thousand million cells and each of these may have a thousand connections. Such enormous numbers used to discourage us and cause us to dismiss the possibility of making a machine with human-like ability,but now that we have grown used to moving forward at such a pace we can be less sure. Quite soon，in only 10 or 20 years perhaps，we will be able to assemble a machine as complex as the human brain,and if we can we will. It may then take us a long time to render it intelligent by loading in the right software (软件)or by altering the architecture but that too
will happen.
I think- it certain that in decades not
centuries*machines of silicon (桂)will arise first to rival and then exceed their human ancestors. Once they exceed us
they will be capable of their own design. In a real sense
they will be able to reproduce themselves. Silicon will have ended carbon‘s long control. And we will no longer be able
to claim ourselves to be the finest intelligence in the knowledge.
As the intelligence of robots increases to match that of humans and as their cost dec ines through economies of scale we may use them to expand our frontiers first on earth
through their alnlity to withstand environments, harmful to ourselves. Thus deserts may bloom and the ocean beds be mined. Further ahead, by a combination of the great wealth this new age will bring and the technology it will provide, the
construction of a vast,man-created world in space，home to thousands or millions of people， will be within our power.
It can be inferred from the passage that_.
A. after the installation of a great number of cells and connections robots will be capable of reproduction
B. with the rapid development of technology people have come to realize the possibility of making a machine with human-like ability
C. once we make a machine as complex as the human brainit will possess intelligence
D. robot will have control of the vast,man-made world in space
【讲解答案】
B推理题。
全文反复提到随着科技的发展，人们能够生产出人工智能型的机器。
所以B项符合文本的含义。