单选题Woman: Did you think it was a good play? Man: What I didn't understand was the very beginning. Question: What does the man mean? A. He didn't know how to begin to write a play. B. He didn't like plays very much in the past. C. He didn't want to talk about it right away. D. He wasn't sure what the first part was about.

单选题 We now come to the vital topic of money. First, we must remember that science, on any significant scale, exists only in economies where there is surplus (剩余，过剩) of goods and services. A prosperous economy forms a necessary base for scientific work. Tragically, the economies of the "underdeveloped" countries, where the need is overwhelming, have not supported—nor have they been capable of supporting—any substantial scientific and technical training or research. Read the speech of P.M.S. Blackett, President of the Royal Society, in which the existing great disparity between the "have" and "have-not" economies is considered. The primary theme of his address is that the gap is not closing; on the contrary, it steadily grows wider. The United States, as the wealthiest industrial nation, spends a greater amount on research and development than any other nations. It is beyond the scope of this book to consider in detail whether the amount spent is adequate, either in relation to our own economy or in relation to our position in the world. At best the question is an open one. In the last few years, financial support for science has changed significantly. It is frustrating to report that, in spite of numerous statements about the extent and nature of these changes, it has been impossible to find sufficient agreement to be sure just what has happened. Two points do appear clear. First, there has been an overall cut in research funds, further reinforced by substantial inflation of prices. Second, there has been increased emphasis on "relevant" research—that is research with immediate practical applications. One report that reflects most closely our own estimate of the situation was made by a five-member committee from the National Academy of Sciences. This group investigated funding of chemistry projects by the National Institutes of Health. The committee concluded that funding had declined by an average of 20% and that the section most closely related to basic research had funds cut in half. The committee found that various institutes, in-house research, administrative budgets, and continuing extramural (市外的) grants had been protected with the result that new and renewal grants had become a disaster area. Other reports stating that federal institutes' funds have had only limited cuts have apparently ignored the point made by the National Academy Committee.

单选题To cover an area of 3 square miles and get information about each point along the way, how many smart dust sensors, are needed?

单选题Man: I'd like to sign up for some voluntary work with the environment council. I hear it's a great way to connect with the community.Woman: It sure is, but you'll have to put in a lot of hours. So you must leave some room in scheduling your time.Question: What does the woman imply?

单选题We had a party last weekend, and it was a lot of fun. So let's have ______ one this weekend.

单选题Father sometimes goes to the gym with US though he ______ going there.

单选题Eating regular meals is ______ important for health. A. vividly B. vitally C. visually D. visibly

单选题The policemen are investigating the murder ______. A. event B. case C. incident D. accident

单选题City planners must never forget that public acceptance of their ideas requires time. So when their ideas are ______, they must continue to work. A. refused B. rejected C. denied D. objected

单选题The survey asked 750 school children about the values and beliefs they ______ from television. A. pick up B. take up C. put up D. make up

单选题Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center. Artificial flowers are used for scientific as well as for decorative purposes. They are made from {{U}} {{U}} 1 {{/U}} {{/U}}of materials, such as wax and glass, so skillfully that they can scarcely be {{U}} {{U}} 2 {{/U}} {{/U}}from natural flowers. In making such models, painstaking skill and artistry are called for, {{U}} {{U}} 3 {{/U}} {{/U}}thorough knowledge of plant structure. The {{U}} {{U}} 4 {{/U}} {{/U}}of glass flowers in the Botanical Museum of Harvard University is the most famous in North America and is widely known {{U}} {{U}} 5 {{/U}} {{/U}}the scientific world. {{U}} {{U}} 6 {{/U}} {{/U}}, there are several thousand models in colored glass, the work of two artist-naturalists, Leopold Blalschka and his son Rudolph. The intention was to have the collection {{U}} {{U}} 7 {{/U}} {{/U}}at least one member of each flower family native to the United States. {{U}} {{U}} 8 {{/U}} {{/U}}it was never completed, it contains more than seven hundred species representing 164 families of flowering plants. {{U}} {{U}} 9 {{/U}} {{/U}}detail of these is accurately reproduced in color and structure. The models are {{U}} {{U}} 10 {{/U}} {{/U}}in locked cases as they are too valuable and fragile for classroom use.

单选题Prices of food and clothing and almost everything else in the country have steadily gone up. As a result, the buying ______ of the dollar has gone down.

单选题In 1993, New York State ordered stores to charge a deposit on beverage (饮料) containers. Within a year, consumers had returned millions of aluminum cans and glass and plastic bottles. Plenty of companies were eager to accept the aluminum and glass as raw materials for new products, but because few could figure out what to do with the plastic, much of it wound up buried in landfills (垃圾填埋场). The problem was not limited to New York. Unfortunately, there were too few uses for second-hand plastic. Today, one out of five plastic soda bottles is recycled (回收利用) in the United States. The reason for the change is that now there are dozens of companies across the country buying discarded plastic soda bottles and turning them into fence posts, paint brushes, etc. As the New York experience shows, recycling involves more than simply separating valuable materials from the rest of the rubbish. A discard remains a discard until somebody figures out how to give it a second life—and until economic arrangements exist to give that second life value. Without adequate markets to absorb materials collected for recycling, throwaways actually depress prices for used materials. Shrinking landfill space, and rising costs for burying and burning rubbish are forcing local governments to look more closely at recycling. In many areas, the East Coast especially, recycling is already the least expensive waste-management option. For every ton of waste recycled, a city avoids paying for its disposal, which, in parts of New York, amounts to savings of more than $100 per ton. Recycling also stimulates the local economy by creating jobs and trims the pollution control and energy costs of industries that make recycled products by giving them a more refined raw material.

单选题I ______ my eyes round the room but saw nothing unusual.

单选题A: Hi, Tom. How is everything? B: ______

单选题Woman: My headache is killing me. I thought it was going away, but now it is getting worse and worse.Man: I told you yesterday to make an appointment.Question: What does the man mean?

单选题To what extent will future scientific discoveries make possible the ______ of the human life span?

单选题Speaker A: Excuse me, sir. Can you tell me where the bus stop for Hyde Park is? Speaker B: ______ A. Of course. I'm glad to tell you where it is. B. Yes. Turn right and walk two blocks and you'll find a bus stop sign. C. Sorry, I'm too busy to lead you to the nearest bus stop. D. Just a moment. I have to figure out the best way to get there.

单选题There is little, ___ farming in that area and all you can see is miles of wild countryside. A．if so B．if such C．if not D．if any

单选题According to the United States government, people are classified as homeless if they have no place to stay and no expectation of finding a place for the next thirty days, Although technically accurate, that is an impersonal assessment of an enormous and very human problem, The homeless population represents all of us Americans, It includes men and women, the elderly, children, and infants. Its members are from all ethnic (种族的) groups. What they have in common is poverty. Currently in the U.S., thirty-nine million people live in poverty. When money is really tight, paying the rent or buying food often becomes a choice. Government assistance in the form of food stamps does help but, as one homeless man explains, you can't pay the rent with food stamps. With no money for rent, the streets and homeless shelters become the alternative. Although men constitute the largest group within the homeless population, homeless women with children are rapidly joining them. In fact, one quarter of the homeless people in the U.S. are teenagers and young children. People may become homeless for numerous reasons. However there are certain factors that many of these individuals have in common. They include a lack of adequate education and job skills. A majority of the teenagers and adults have not completed high school. The abuse of alcohol and drugs is also a common factor. One third of the adult homeless population abuses alcohol, while one quarter of the same group uses drugs. Some members of this population suffer mental health problems. Within the past several years many institutions for the menially ill have been closed and their patients sent "home". Unfortunately, a number of those people have no home to go to and they are unable to adequately look after themselves. Job loss in today's economy has also become a real factor in the loss of people's homes. The breakup of families through abandonment and divorce are also contributing factors, particularly when there are children involved. The parent who is left to care for the kids with inadequate income may be forced to depend on the homeless shelters to put a roof over their heads.