单选题{{B}}Part A{{/B}}{{I}}You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. {{/I}}

单选题Finishing teacher’s evaluations need maturity and objectivity. Every semester we have the opportunity to evaluate our instructors. We are supposed to judge their lectures, interest in students'' problems, methods of assigning work, and general ability to conduct a class. Then, when the instructor has left the room, we must write our evaluations on the forms provided. We are not sup-posed to exchange view or discuss our responses. After everyone has completed the forms, one student collects and tallies the responses and then puts them in an envelope and makes them sealed. 　　It is very difficult to evaluate another person’s performance objectively. For example, Senta recently wrote irresponsible remarks about her instructor because she was falling to pass the course. Her friend Sam wrote a marvelous description of the same instructor because he received an A in the course. Both Senta and Sam were not fairly evaluating the instructor. They were affected by the grades they were earning and were biased in their judgments. 　　Another irresponsible form of evaluation occurred when James rated his instructor excellent be- cause the instructor is "easy". He gives few tests and only assigns one paper during the entire term. His lectures are often full of jokes and endless stories. On the other hand, James rated Pro fessor Jones poor because he assigns text work dally, gives pretest and post test reviews, and packs his lectures with a lot of information.

单选题Questions 18-21 are based on the following conversation about renting handbag.

单选题You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer—A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.

单选题{{B}}Text 3{{/B}} Dollars and cents are the basic units of American money. The back of all dollar bills are green (hence "greenbacks"). The commonly used coins are: one cent(penny), five cents(nickel), l0 cents ( dime), and 25 cents (quarter). 50 pieces ( half dollar) and silver dollars ( not really silver anymore) are gaining in usage, while there has been talk of phasing out the penny--that's inflation for you. "Always early plenty of quarters when travelling. Very useful for phones, soda machines, laundry machines, etc." There is generally no problem in using U. S. dollars in Canada, but this is never possible in reverse. It's useful always to carry small change for things like exact fare buses, but do not carry large sums of cash. Instead keep the bulk of your money in travellers' cheques which Can be purchased both in the US and abroad and should be in dollar denominations. The best known cheques are those of American Express, so you will have the least difficulty cashing these, even in out of the way places. Thomas Cook travellers' cheques are also acceptable, especially as lost ones can be reclaimed at Some car rental companies. Dollar denomination cheques can be used like regular money. There's no need to cash them at a bank: use them instead to pay for meals, supermarket purchases or whatever. Ten or twenty dollar cheques are accepted like this almost always and you'll be given change just as though you'd presented the cashier with dollar bills. Be prepared to show I. D. when you cash your cheques. Credit cards can be even more valuable than travellers' cheques, as they are often used to guarantee room reservations over the phone and are accepted in lieu of deposit when renting a car--indeed without a credit card you may be considered so untrustworthy that not only a deposit but your passport will be held as security too. The major credit cards are VISA, Master Charge and Access, Diners Club and American Express. If you hold a bank card, it could well be worthwhile to increase your credit limit for travel purposes--you should ask your bank manager.

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单选题Aerobics is a book about ______.

单选题 Questions 15～18 are based on the following dialogue.

单选题One aspect of "the universality of toys" lies in the fact that ______.

单选题 Questions 18～21 are based on the following dialogue on sports.

单选题NASA, the U.S.space agency, believes there's a good chance that we're not alone in the universe. Last fall, NASA began a new project called the High Resolution Microwave Survey (HRMS). Its aim: to find evidence of life in one of the billions of galaxies in the universe. The search for intelligent life on other planets isn't new. It began almost 100 years ago. That's when scientists built a huge transmitter to beam radio waves into space. Scientists thought smart beings on other planets might pick up the signals. Scientists also have beamed a message about humans and our solar system to a nearby constellation. But because the constellation is 25,000 light years away, a return message wouldn't reach Earth for 50,000 years! So don't wait up for an answer. So far, no Ets ( Extraterrestrial beings ) that we know of have returned our "calls." But according to Dr. Jill Tarter, an HRMS scientist, we haven't exactly had our ears wide open. "Now, however," says Dr. Tarter, "we've built the tools we need to listen well." Last October, Dr. Tarter switched on the largest radio receiver in the world. It's an enormous metal bowl stretching 1,000 feet across a canyon in the jungles of Puerto Rico. Meanwhile, another NASA scientist flipped on a huge radio antenna in California's Mojave Desert. NASA hopes these big dishes—and others around the world—will pick up radio signals from new world. Dr. Frank Drake had been searching for life in outer space for years. He explains the HRMS project this way: To listen to your radio, you move the tuner on the dial until the channels come in loud and clear. Now imagine radio receivers that scan our galaxy "listening" to 14 million channels every second. That's what NASA's radio telescopes in Puerto Rico and California are doing. But that's not all. Powerful computers hooked to the telescopes sift through every signal. The computers try to match the signals to ones that scientists already recognize, such as human-made signals. If they can't, Drake and Tarter check on them. "It could prove there is radio technology elsewhere in the universe," says Dr. Tarter. "And that would mean we're not alone./

单选题Labor force is defined as being the total number of people who are available to work and earn income. This definition includes everyone who is employed or seeking paid employment, so it includes employees and the self-employed. Labor is one of the country's resources which can be combined with other resources to produce the goods and services required by the community. Though the size of the workforce relies greatly on the size of the total population, there are several other aspects which also affect it. The age distribution of the total population has a very marked effect on the available workforce. If the population has a high proportion of very young people or of those too old to work, then the available workforce would be lower than if there were an evenly spread age distribution. If the population grows rapidly from natural increase, i. e. the number of births greatly exceeds the number of deaths, then as a total population increases, the proportion in the workforce declines. Sometimes a population is described as aging, which means that the birth rate is either falling or growing very slowly, and as people retire from the workforce, there are inadequate numbers of young people entering it to take place of those who are leaving it. The population is top-heavy with older people. So the percentage of the population in the workforce declines when there is either a rapid increase in births or a falling birth rate. The age distribution of the population has several important influences on the economy. If the population is aging and there is an increase in the number of people retiring without a corresponding increase in the number entering the workforce, this raises the problem of the ability of the economy to provide a reasonable level of social services to the retired group. If the aged are to be cared for in special homes or hotels, finance must be available for that purpose. If the size of the workforce is small relative to the total population, then the government tax receipts are relatively low and either the government has less money available to it or the workforce members have to be taxed more heavily.

单选题According to the passage, which of the following statement is TRUE?

单选题 Questions 15～18 are based on the following dialogue.

单选题According to the theory of "risk homeostasis", some traffic accidents result from our ______.

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