[語言類考試復(fù)習(xí)資料大全]公共英語四級(jí)(筆試)分類模擬題48

1、書山有路勤為徑，學(xué)海無涯苦作舟。祝愿天下莘莘學(xué)子：學(xué)業(yè)有成，金榜題名！語言類考試復(fù)習(xí)資料大全公共英語四級(jí)(筆試)分類模擬題48公共英語四級(jí)(筆試)分類模擬題48Section ListeningPart AFor Questions 1-5, you will hear a passage about Computers. While you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Wri

2、te only 1 word in each numbered box.Information about Four Operations of Computer Computer can perform four general operations. They are input, process, output, and 1 All computer processing requires 2 In the processing phase, the computer manipulates the data to create 3 During the output operation

3、, the information that has been created is put into some 4 Finally, the output may be stored on a disk for future 5 (如需獲取本MP3聽力錄音請(qǐng)搜索標(biāo)題名) 1.答案:storage.聽力原文 Whether small or large, computers can perform four general operations. These operations comprise the information processing cycle and are: input,

4、 process, output, and storage. These operations describe the procedures that a computer performs to process data into information and store it for future use. All computer processing requires data. Data refers to the raw facts, including numbers and words, given to a computer during the input operat

5、ion. In the processing phase, the computer manipulates the data to create information. Information refers to data that has been processed into a form that has meaning and is useful. The production of information by processing data on a computer is called information processing. During the output ope

6、ration, the information that has been created is put into some form, such as a printed report, that people can use. The information can also be stored electronically for future use. The people who either use the computer directly or use the information it provides are called computer users, end user

7、s, or sometimes just simply users. The four operations of information processing cycle occured on a personal computer are: (1) The computer user inputs data by pressing the keys on the keyboard. (2) The data is then processed by the unit called the processor. (3) The output, or results, from the pro

8、cessing are displayed on the screen or printed on the printer, providing information to the user. (4) Finally, the output may be stored on a disk for future reference. 2.答案: data.3.答案: information.4.答案: form.5.答案: reference.Part BFor Questions 6-10, you will hear a talk about the Department of Compu

9、ter Science. While you listen, complete the sentences and answer the questions. Use not more than 3 words for each answer.The department provides computer facilities for staff and students through 1 In what areas has Professor Martins research result been successfully used? 2 Dr. Peterson has focuse

10、d his research on 3 By what was Dr. Spencers project supported? 4 According to the talk what was invented in 1945? 5 (如需獲取本MP3聽力錄音請(qǐng)搜索標(biāo)題名) 1.答案:over 200 terminals.聽力原文 M: Could I have your attention please? Could I. everybody? Thank you. Im David Wilson. Welcome to visit the Department of Computer Sc

11、ience. The department was awarded, as you can see on the wall, the highest place for research in computer science of all the universities in this country. Currently, a wide range of research activities is going on here. The department has an IBM 4,381 and several SUN systems, which provide the gener

12、al computer facilities for staff and students through over 200 terminals. All the computers are linked to the Internet. You wont have any difficulty communicating with other institutions inside and outside the country. The department also has a comprehensive Apple Macintosh installation with facilit

13、ies for Word Processing and Desk Top Publishing. Isnt it an excellent place for your study and research? By the way, study for the degree of PH. D and MSc may be undertaken by research and a taught MSc course is also available. The department has some well-known figures in their research areas. Prof

14、essor Anderson, chairman of the department, is a specialist in the design of VLSI components and systems. The components and systems have applications in image and signal processing, image understanding, aerospace and telecommunications. Professor Martin is now engaged in the use of formal technique

15、s, the study of problems in distributed computing and automatic error recovery. His results of research have been used very successfully in several areas of software engineering. Dr. Peterson has focused on research into artificial intelligence. His main focus is on the logical and philosophical iss

16、ues involved in reasoning. Dr. Spencer has a range of projects under way in the areas of image coding and analysis. The projects are supported by industrial funding and have practical applications in image enhancement, data compression and have practical applications in image enhancement, data compr

17、ession and segmentation. Im teaching and doing research on history of computer science. As youve learnt in your undergraduate study, since the invention of the modem digital computer in 1945, the world has seen a revolution in the development of computing and information processing; and during the l

18、ast two decades the speed of innovation has quickened still further. My research interests include the mathematical and theoretical background of computation, the development of hardware and software, office and communications techniques, the computer industry and computer applications. Now, lets go

19、 to the computer lab and Ill show you something new. 2.答案: Software engineering.3.答案: artificial intelligence.4.答案: Industrial funding.5.答案: Modern digital computer.Part CYou will hear two passages and one dialogue. Before listening to each one, read the questions related to it. While listening, ans

20、wer each question by choosing A, B, C or D. You will hear each piece only once. (如需獲取本MP3聽力錄音請(qǐng)搜索標(biāo)題名) 1. News spreads fast because of _.A.the changes of the worldB.modern transportationC.a peace agreementD.new technology答案:D聽力原文 Telephone, television, radio, and telegraph all help people communicate

21、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. News of a disaster such as an earthquake can bring help from distant countries. Within hours, help is on

22、the way. Because of modem 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 t

23、hat 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 oceans. In the seventeenth and eighteenth centuries, it took six weeks for news from Europe to reach America. This time

24、 difference influenced peoples actions. For example, one battle in the war of I812 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 this time, the large a

25、nd serious Battle of New Orleans was fought. Many people would not have died if news had come in time. In the past, communication took much more time than it does now. There was a good reason why the world seemed so much larger than it does today. 2. Which of the following is very important in a dis

26、aster area according to the passage?A.Latest news.B.New ideas.C.Modern technology.D.Fast communication.答案:D3. Two hundred years ago, news between the continents was carried _.A.by landB.by airC.by seaD.by telephone and telegraph答案:C4. Which of the following statements is true?A.The world is changing

27、 in size.B.The world now seems smaller because of fast communication.C.The distance between England and America has been shortened since the war of 1812.D.The world is actually smaller today.答案:B (如需獲取本MP3聽力錄音請(qǐng)搜索標(biāo)題名) 5. In this passage, a dark side means _.A.dull problemB.not brightC.a black sideD.d

28、isadvantage答案:D聽力原文 Is there a dark side to the computer revolution? Do computers threaten the health of our society? You may have negative answers. The truth of the matter, however, is that any new technologycomputers includedhas a dark side. Look at the internal combustion engine, for example. Eve

29、ryone knows how cars, trucks changed the way people lived. But it also brought problems along with it. Cars are deadly weapons in the right hands of poor drivers. Their exhaust gases pollute the air. The problems posed by the computer revolution are quite different of course. Many assembly line jobs

30、, for example, will be taken over by robots and computerised machinery. Since many of these jobs are boring and even dangerous, that seems like a step in the direction. But its a big worry to the people whose jobs are threatened. Quite a different problem, but one that is causing growing concern, is

31、 that computers may violate peoples privacy. Almost everyone agrees that it is necessary to share information that government agencies have gathered and stored in their computers, in order to track down criminals, and stop waste. But almost everyone, at the same time doesnt agree that every governme

32、nt should have access to the computer files of every other government agency. Yet another problem is computer crime. Clever criminals are finding ways to break computer codes and transfer millions of dollars to their accounts. The list could go on. But if we want computers to work for us, well have

33、to find ways to keep people from using computers against us, as we deal with the problems the vehicles cause instead of giving up the vehicles. 6. Which of the following is true according to the passage?A.Facing the disadvantages of automobiles, we should give them up.B.While making use of computers

34、, we have to take measures to get rid of their dark sides.C.We can not make use of computers before their dark sides are removed.D.We can find no way to keep computers from turning against us.答案:B7. In the passage, what does computer crime mean?A.Criminals make use of computer shortcomings to do som

35、ething illegal.B.Computers can be used to track down criminals.C.Computers can be used to break codes.D.Computers may sometimes do something illegal.答案:A (如需獲取本MP3聽力錄音請(qǐng)搜索標(biāo)題名) 8. How does the professor think of calling a computer an electronic brain?A.He thinks that it is not accurate.B.He thinks tha

36、t it is OK.C.He thinks that it is rather fashionable.D.He thinks that it is very proper.答案:A聽力原文 Professor Smith is explaining to his student, Ann, why its improper to call a computer an, electronic brain. Professor: Im afraid, Ann, youre not very accurate when you call a computer an electronic brai

37、n. Ann: Oh? But professor, you see, most people do. Professor: Yes, it was given that title by some misguided journalists not long after the first modem electronic computer was built in 1946. Ann: Its electronic, professor, so you must be objecting to the word brain? Professor: Exactly, Ann. There a

38、re similarities with the human brain, but there is one very important difference. Ann: You mean the computer is better? Professor: In some way, yes; but not in something that is quite fundamental. Ann: Let me think. Do you mean the fact that the machine is controlled by man? Professor: Full marks. Y

39、ou see, despite all its accomplishments, the so-called electronic brain must be programmed by a human brain. Ann: Programmed? What do you mean? Professor: A program is a sequence of instructions prepared for the computer, enabling the computer to solve a given program. The point is that a human tell

40、s the machine what to do, when to do and how it is done. Ann: I see. Do you program information for the computers memory? Professor: Yes, except that the word memory has rather gone out of fashion. The computer doesnt really remember. Information is stored in it. Well, lets go to the computer room a

41、nd Ill show you how a computer works. Ann: OK, its very kind of you. 9. When was the first computer built?A.1964.B.1946.C.1916.D.1940.答案:B10. Which of the following is true according to the professor?A.The computer is absolutely better than the human brain.B.The computer is better than the human bra

42、in in many ways.C.Without a program and humans instructions, the computer cant work.D.The computer can program itself.答案:CSection ReadingPart ARead the following text and fill each of the numbered, spaces with ONE suitable word.Information Technology 1982 was the year of information technology in Gr

43、eat Britain. But what exactly is infotech? 85% of the people polled recently had not a clue what it means, 1 53% of those polled said they thought it sounded 2 important. They were right. It is. So what is it? Well, put simply, it is the marrying-up of products 3 several key industries: computers, t

44、elephones, televisions, satellites. It means 4 microelectronics, telecommunication networks, and fibre optics to help produce, store, obtain and send information by 5 of words, numbers, pictures and sound more quickly and efficiently than ever before. The impact infotech is having and is going to ha

45、ve on our lives and work is tremendous. It is already linking the skills of the space industry 6 those of cable television, so programmes can be beamed directly into our homes 7 all over the world. Armies of steel collar workers, the robots, will soon be working in factories doing the boring, comple

46、x and dull jobs which are at present still 8 by man. In some areas the car industry this has already started. Television will also be used to 9 customers from the comfort of their homes by simply ordering 10 the TV screen, payment being made by direct debit of their credit cards. The automatic booki

47、ng of tickets will also be done through the 11 screen. Cable television 12 in many countries now gives a choice of dozens of 13 will soon be used to 14 our homes by operating burglar and fire alarms linked to police and fire stations. Computers will run our homes, controlling the heating, air-condit

48、ioning and cooking systems while robots will cope with the housework. The friendly 15 will be a thing of the past as the post service and letters disappear with the electronic mail received via viewdata screens. 1.答案: although/though2.答案: pretty/very/quite3.答案: from4.答案: using5.答案: way/means6.答案: wi

49、th7.答案: from8.答案: done9.答案: enable10.答案: via/through11.答案:television/TV12.答案:which/that13.答案:channels14.答案:protect15.答案:postman/mailmanPart BRead the following text. Answer the questions below the text by choosing A, B, C or D. Computers Will Soon Jump to Our Every Word Its late evening in Munich st

50、ation and you need a bed for the night. The tourist bureau is closed and theres no phone in sight. So whats new? Well, theres still the latest information system to try out. Projected as an image on a wall in the station is a street map of the city and a set of icons. You point to the hotel icon and

51、 then circle with your finger the district you want. A more detailed street map, with flashing spots representing the hotels. You point to one of the spots, and a list gives price and availability of rooms. You book by pointing to the telephone icon. A message on the wall tells you that a car is on

52、its way to pick you up. The fantasy could be a reality within a year or two, says Christopher Maggioni, the leader of a German electronics company. His research team at the companys laboratory in Munich has already built working prototypes (供試驗(yàn)用的樣品). They remove the need to master trick procedures o

53、n the keyboard, and leave little hardware on show for vandals to wreck. These are the two great advantages, Mr. Maggioni says. The systems are also fine for sterile environments and for clearing the office desktop. He sees doctors using gesture recognition systems in hospital operation theatres wher

54、e unsterilised equipment is banned. In the office, the clutter of telephones, diaries and address books on a desk could be a thing of the past. When you wanted to make a call, the image of a keypad could be projected on to the pile of papers beside you and you would move your fingers over the number

55、s as you do with a real telephone. Speakers and a microphone would be buried in the furnishings. For around $5,500 the system is also fairly cheap. It consists of a standard video camera and projector, and a computer. For decades, researchers in the US, Japan and Europe have been looking at ways of

56、getting rid of the keyboard and of using gestures, voice and even eye movements to simplify the manner in which humans communicate with computers. A number of companies claim to have built working prototypes of a computer system that recognises head movements. This could be an important advance in the development of