大学英语四六级考试模拟英语四级考试模拟及

英语四级考试模拟试卷及答案(1)Part I Listening Comprehension (20 minutes)Section ADirections: In this section, you will hear short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.Example: You will hear:You will read:A At the office. B In the waiting room.C At the airport. D In a restaurant.From the conversation we know that the two were talking about some work they had to finish in the evening. This conversation is most likely to have taken place at the office. Therefore, A At the office is the best answer. You should choose A on the Answer Sheet and mark it with a single line through the centre.Sample Answer A B C D1. A The woman bought the jeans cheaper than the mans wife.B The jeans the woman bought was worth the money.C The mans wife bought two Jeans for 0 yuan.D The mans wife is good at bargaining.2. A English husbands usually do a lot of housework.B English husbands are usually interesting.C English husbands are good at sports.D English husbands enjoy doing housework.3. A Luck. B A restaurant. C A waiters job. D Looking for a job.4.A The man should call Bill to check his schedule.B The woman should have left for the airport earlier.C The woman does not need to rush to meet Bill.D Traffic near the airport could delay the womans arrival.5.A Announce appeals for public service. B Hold a Charity concert to raise money.C Ask the school radio station for help. D Draw money to fund the radio station.6. A In a restaurant. B In a bank. C At the airport. D At a hotel.7. A She likes the native handicrafts.B She dislikes native art a lot.C She hasnt learned to appreciate art yet.D She has never bought any native art before.8. A It is serious. B It is pretended.C It is brief but real. D It only occurs when theres a party.9. A Customer and waitress. B Teacher and student.C Boss and secretary. D Lawyer and client. A The clerk doesnt like to be bothered.B The machine was just repaired.C She can teach the man how to operate the machine.D The man shouldnt make any more copies.Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.Passage OneQuestions to are based on the passage you have just heard. A The advantages of an economy based on farming.B Reason that farmers continued using river transportation.C The role of cotton in the United States economy.D Improved methods of transporting farm crops.A The new technology used to build roads.B The ability to transport goods over land.C The trade in grain and cotton.D The linking of smaller local roads into one long road.A They reduced charges for transporting farm products.B They required payment from vehicles that used their roads.C They made repairs to older roads.D They installed streetlights on roads connecting major cities.Passage TwoQuestions to are based on the passage you have just heard. A To look back to the early days of computers.B To explain what technical problems may occur with computers.C To encourage necessary investment in computers.D To warn against a mentally lazy attitude towards computers.A Use them for business purposes only.B Check all their answers.C Substitute them for basic thinking.D Be reasonably skeptical about them. A A computer used exclusively by one company for its own problems.B A persons storage of knowledge and the ability to process the computer.C The most up-to-date in-house computer a company can buy.D A computer from the post-war era which is very reliable. A Computer science courses in high schools.B Business men and women who use pocket calculators.C Maintenance checks on computers.D Companies which depend exclusively on computers for decision-making.Passage ThreeQuestions to 20 are based on the passage you have just heard. A How spiders gather food.B Why spider webs are so strong.C How spider build their webs.D How new kinds of structures might be designed. A Theyre much larger than spiders.B Theyre quite delicate.C They have unusual ways of gathering food.D They developed a long time before spiders.20. A Chemists.B Architects.C Airline pilots.D Auto designers.Part II Reading 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 centre.Passage OneQuestions 21 to 25 are based on the following passage.With the prospect of coal and petroleum supplies depleted and with air pollution becoming as increasing concern, the major countries of the world are seeking alternate sources of energy. If a means to obtain energy from water, especially from the ocean, can be effected economically, it would furnish a never ending supply of energy, since 70% of the earths surface is ocean and another % is fresh water in rivers and lakes.From the beginning of time man has used water power as a source of work waterfalls and dams but these are fresh water sources and are landlocked. The seas have contributed little or nothing in the way of power. The use of temperature variation between currents is one area of exploration. Ocean water is heated by the sun near the equator and drawn by the rotation of the earth toward the poles, where it cools and drops toward the ocean floor and starts its journey back toward the equator. The differential (差别) between the two currents is 35 degrees to 45 degrees Fahrenheit and to use it the scientists must find the places where they run near land and are not too far away from each other. One area that meets these requirements is the Caribbean Sea.Oceans also offer wave power, tides and the chemical propensities (倾向) of salt water as potential sources of energy. All these uses are theoretically possible. Britains Department of Energy is interested in wave power, using a string of tear drop devices that depend on very active wave areas and 0 feet depths. In addition to this, the British are working on a method that the Japanese have already put into practical use on a small scale for powering their navigational buoys. This method is called an oscillating (震荡)water column and rides the waves with a series of cylinders having one-way air valves. Wave movement produces air under pressure that has only one escape route to a turbine (涡轮) that powers a generator.21. According to the first two paragraphs, _.A the use of water is a completely new conceptB the sea has long been used as a way of powerC water is a source of energy far more economical than any other energiesD water, if properly handled, may present a promising solution to energy crisis22. The word depleted (Line 1, Para. 1) possibly means “_”.A exhausted B discarded C polluted D disappeared23. According to the passage, the Caribbean Sea is a place where _.A two currents of different temperatures run near to each other and not far away from landB two currents of different temperatures run near to each other but far away from landC the ocean water is heated by the sunD the ocean water gets cool24. We can learn from the passage that _.A as far as energy source is concerned, salt water is useless because of its chemical propertiesB the working principle of a vibrating water column is to use water as a direct power driving a generatorC Britain is pursuing a method that the Japanese have already put into practiceD Britain is the most advanced country in developing new energy source25. What is the passage mainly about?A Energy crisis.B Water as a possible solution to energy crisis.C History of the use of water as a source of work energy.D Properties of water.Passage TwoQuestions 26 to 30 are based on the following passage.We have emphasized so far the significance of scarcity the limited means to satisfy human wants. Because of scarcity, choices are necessary. An easy example of the problem of choice is a persons decision about how to allocate his or her time. As the old saying goes, “There are only 24 hours in a day.” If we take off 8 hours for a reasonable nights sleep, this leaves hours to be allocated among all other possible things working at one or more jobs, watching TV, studying, playing tennis, etc. one can do with the limited available waking hours. Clearly, each person must make choices about how much of their limited available time will be spent on each possible activity.When choices are made among alternatives such as those just described, it becomes plain that choosing one alternative often involves giving up another. For example, suppose you go to classes 4 hours a day and get 8 hours of sleep. You will have an additional waking hours to allocate per day. Suppose now that the only other activities you view as worth pursuing are watching TV and studying. If you choose to watch TV for hours a day, no time will be left for studying, assuming you continue to sleep for 8 hours in each 24-hour period and do not cut classes. If you choose each day to devote 6 hours to studying, only 6 of the waking hours will be available for watching TV. You must give up the opportunity of watching more hours of TV in the process of choosing to study. We can therefore say that the decision to study costs you 6 hours of TV watching.Economists use the term opportunity cost to mean the cost of a specific choice measured in terms of the next best alternative choice. In other words, it is what the decision maker must forego in order to make the choice that is finally made. Thus, in our example, the opportunity cost of studying for 6 hours was 6 hours of watching TV. We can see many other examples of opportunity costs around us. For example, governments are faced with limited budgets and therefore with limited resources that can be used to provide goods and services to citizens. If a government chooses to improve its military forces, it may well do so by allocating fewer resources for libraries or schools. The opportunity cost of a strong defense may be a reduction in the size of library holdings or educational services.26. What is most probably the key point discussed immediately before this passage?A Limited time. B Making choices.C Opportunity cost. D The shortage of resources.27. According to the passage, choices must be made because _.A resources are abundantB there is too much for us to doC there are only 24 waking hours in a dayD our means are limited, but our wants are unlimited28. According to the passage, economists define opportunity cost as _.A an opportunity given up in terms of cashB the cost of a better choice measured in terms of cash :C giving up a specific choice for the next best alternativeD the cost of a specific choice measured in terms of any alternative choice29. In the examples cited in the passage, the opportunity cost of studying for 4 hours per day was_.A 4 hours of watching TV B 4 hours of classesC 4 hours of sleep D 8 hours of sleep30. If a government chooses to allocate more of its resources to its military forces, there is a possibility of reduction in resources allocated for _.A libraries and education B libraries and business firmsC education and business firms D libraries, business firms and educationPassage ThreeQuestions 31 to 35 are based on the following passage.Going online is a favorite recreation for millions of American children. Almost million ( percent) of Americas 69 million children are online. The Internet both entertains and educates children, however, there are some possible negative consequences for children who access kid-based Web sites. Advertising on kid-based Web sites has become both a rapidly growing market for consumer companies and a concern for parents. With a click on an icon, children can link to advertisers and be granted tremendous spending power. Children are an important target group for consumer companies. Children under age spent $ billion, teenagers another $ 67 billion, and together they influenced $ 0 billion of their parents incomes.Many critics question the appropriateness of targeting children in Internet advertising and press to require that children be treated as a special case by advertisers. Because children lack the analytical (分析的) abilities and judgment of adults, they may be unable to evaluate the accuracy of information they view, or understand that the information they provide to advertisers is really just data collected by an advertiser. Children generally lack the ability to give consent to the release of personal information to an advertiser，an even greater problem for children when they are offered incentives (刺激) for providing personal information, or when personal information is required before they are allowed to register for various services. Children may not realize that in many cases these characters provide hotlinks directly to advertising sites.The Internet does present some challenges for advertisers who want to be ethical in their marketing practices. Many advertisers argue that we underestimate (低估) the levels of media awareness shown by children. By the age of seven or eight most children can recognize an advertisement and know that its purpose is to sell something and are able to make judgments about the products shown in advertisements. However, this somewhat optimistic and decidedly libertarian view of children runs aground when we realize that they are (like a surprising number of adults) unable to judge accurately between entertainment and advertising.