单选题What is an advertisement?

单选题As (usually), when his parents (don"t) like what he (wears), they start to (bug) him.

单选题Sleep is a funny thing. We' re taught that we should get seven or eight hours a night, but a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo last month reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to die of stroke--probably as a result of an underlying disorder that keeps them from snoozing soundly. Doctors have their own special sleep problems. Residents are famously sleep deprived. When I was training to become a doctor, it was not unusual to work 40 hours in a row without rest. Most of us took it in stride, confident we could still deliver the highest quality of medical care. Maybe we shouldn' t have been so sure of ourselves. An article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person' s motor performance is comparable to that of someone who is legally intoxicated. Curiously, surgeons who believe that operating under the influence is grounds for dismissal often don' t think twice about operating without enough sleep. "I could tell you horror stories," says Jaya Agrawal, president of the American Medical Student Association, which runs a website where residents can post anonymous anecdotes. Some are terrifying. "I was operating after being up for over 36 hours, "one writes. "I literally fell asleep standing up and nearly face planted into the wound. " "Practically every surgical resident I know has fallen asleep at the wheel driving home from work," writes another. "I know of three who have hit parked cars. Another hit a convenience store on the roadside, going [105kin/h]. " "Your own patients have become the enemy," writes a third," because they are the one thing that stands between you and a few hours of sleep. " Agrawal' s organization is supporting the Patient and Physician Safety and Protection Act of 2001, introduced last November by Representative John Conyers Jr. of Michigan. Its key provisions, modeled on New York State's regulations, include an 80-hour workweek and a 24-hour work-shift limit. Most doctors, however, resist such interference. Dr. Charles Binkley, a senior surgery resident at the University of Michigan, agrees that something needs to be done but believes "doctors should be bound by their conscience, not by the government. " The U. S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you' re worried about the people treating you, you should feel free to ask how many hours of sleep they have had. Doctors, for their part, have to give up their pose of infallibility and get the rest they need.

单选题Speaker A: Uh, I wonder if I could possibly use your phone. Speaker B: ______ A. Oh, I'm sorry, but it isn't working; it's out of order. B. You are welcome. It's over there. C. Of course. Who are you going to call? D. Yes, you can, But don't you see a public phone booth over there?

单选题It was a pity that the great writer died, ______ his works unfinished.

单选题Some companies purpose in using Web bugs is ______. A．to prevent the user from hostile attacks B．to track down the user on the Internet C．to monitor how popular a Web page is D．to deliver banner ads and junk mailing

单选题Nearly 1,000 people are presumed dead as chances ______ of finding more survivors from the sunken Egyptian ferry. A. bubble B. dwindle C. sway D. shiver

单选题In Britain, people have different altitudes to the police. Most people generally (21) them and the job they do—although there are certain people who do not believe that the police (22) have the power that they do. What does a policeman actually do? It is not (23) job to describe. After all, a policeman has a number of jobs in one. A policeman often has to control traffic. either (24) foot in the centre of a town, or in a police car on the roads. Indeed. in Britain, he might he in the Traffic Police and spend all, or a lot of, his time (25) up and down main roads and motorways. A traffic policeman has to help keep the traffic moving, stop (26) motorists and help when there is an accident. A policeman has to help keep the (27) , too. If there is a fight or some other disturbance, we (28) the police to come and restore order. And they often have to deal with situation at great risk to their own (29) . We expect the police to solve crimes, of course, so an ordinary policeman, even if he is not a detective(侦探) ,will often have to help (30) and arrest criminals. And (31) do we call when there is an emergency—an air crash, a fire, a road accident. or a robbery? We call the police. (32) a policeman has to be prepared to face any unpleasant emergency that may happen in the (33) world. The police do an absolutely necessary job, they do it (34) well and I support them, but I do not envy policemen. I do not think that I could (35) do the job of a policeman.

单选题(84) Flying over a desert area in an airplane, two scientists looked down with their trained eyes at trees and bushes. After an hour"s flight one of the scientists wrote in his book, "Look here for probable metals." Scientists in another airplane, flying over a mountain region, sent a message to other scientists on the ground, "Gold possible." Walking across hilly ground, four scientists reported, "This ground should be searched for metals." From an airplane over a hilly wasteland a scientist sent back by radio one word, "Uranium." None of the scientists had X-ray eyes: they had no magic powers for looking down below the earth"s surface. They were merely putting to use one of the newest methods of locating minerals in the ground—using trees and plants as signs that certain minerals may lie beneath the ground on which the trees and plants are growing. (85) This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of trees and bushes that grow on the surface. At Watson Bar Creek, a brook six thousand feet high in the mountains of British Columbia, Canada, a mineral search group gathered bags of tree seeds. Boxes were filled with small branches from the trees, and roots were dug out and put into boxes with each bag and box carefully marked. In a scientific laboratory, the parts of the forest trees were burned to ashes and tested. Each small part was examined to learn whether there were minerals in it. Study of the roots, branches, and seeds showed no silver. But there were small amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunks had more gold than those growing "on the ends of the branches. If the trees had not indicated that there was gold in the ground, the scientists would not have spent money to pay for digging deeper. They did dig and found more gold below. When they dug deeper, they found large quantities of gold.

单选题The scientist has made another wonderful discovery, ______ is of great importance to science.

单选题There're so many kinds of computers on sale that I can't make up my mind ______ to buy.A. whatB. whereC. howD. which

单选题{{B}}26-30{{/B}} Weather Forecast The following forecast shows for the listed cities the projected weather conditions and the expected range of temperatures from September 25,8-00 to September 26,8.00. Area City September 25 08:00～September 25 20:00 September 25 20:00～September 26 08:00 China Beijing Light rain S 3m/h 77°F Cloudy N 3m/h 57°F Jinan Overcast N 3m/h 79°F Overcast S 3m/h 63°F Macao Shower E 24 m/h 84°F Cloudy E 18m/h 77°F Hong Kong Cloudy E 18m/h 82°F Cloudy E 18m/h 77°F Tianjin Light rain S 3m/h 75°F Overcast EN 12m/h 61°F Kunming Cloudy ES 3m/h 73°F Cloudy E 3m/h 59°F Lhasa Cloudy N 3m/h 70°F Cloudy N 3m/h 52°F Europe Athens Clear WS 3m/h 75°F Clear ES 3m/h 63°F Berlin Clear ES 8m/h 77°F Clear ES 3m/h 57°F London Shower E 3m/h 70°F Cloudy E 3m/h 54°F Paris Overcast W 3m/h 68°F Cloudy WN 3m/h 55°F Rome Moderate rain ES 3m/h 72°F Moderate rain W 3m/h 61°F North America Chicago Clear E 3m/h 68°F Clear E 3m/h 48°F Havana Clear S 3m/h 88°F Clear W 3m/h 70°F New York Clear W 3m/h 72°F Clear W 3m/h 59°F San Francisco Clear EN3 m/h 77°F Clear E 3m/h 55°F Toronto Shower E 3m/h 63°F Cloudy EN 3m/h 48°F

单选题Orioles are arboreal birds, and when they descend to the ground, it is mainly to gather nest materials.

单选题1One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. He was standing at the edge of one of the tanks where several of these highly intelligent, friendly creatures were kept. Elvar had just swum up alongside him and had turned on his back. He wanted Sagan to scratch his stom ach again, as the astronomer had done twice before. But this time Elvar was too deep in the water for Sagan to reach him. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water into the air and made a sound just like the word "More!" The astonished astronomer went to the director of the institute and told him about the incident. "Oh, yes. That's one of the words he knows," the director said, showing no surprise at all. Dolphins have bigger brains in proportion to their body size than humans have, and it has been known for a long time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as warning each other of dan ger. Sound travels much faster and much further in water than it does in air. That is why the parts of the brain that deal with sound are much better developed in dolphins than in humans. But can it be said that dolphins have a "language" in the real sense of the word? Scientists don't agree on this. A language is not just a collection of sounds, or even words. A language has a struc ture, or what we call a grammar. The grammar of a language helps to give it meaning. For example, the two questions "Who loves Mary?" and "Who does Mary love?" mean dif ferent things. If you stop to think about it, you will see that this difference doesn't come from the words in the question but from the difference in structure. That is why the ques tion "Can dolphins speak?" can't be answered until we find out if dolphins not only make sounds but also arrange them in ways which affect their meaning.

单选题In winter the Eskimos ______.

单选题{{B}}Passage Four{{/B}} The Security Council is the most powerful body in the UN. It is responsible for maintaining international peace, and for restoring peace when conflicts arise. Its decisions are binding on all UN members. The Security Council has the power to define what is a threat to security, to determine how the UN should respond, and to enforce its decisions by ordering UN members to take certain actions. The Council convenes (召集) any time there is a threat to peace. A representative from each member country who sits on the Council must be available at all times so that the Council can meet at a moment's notice. The Security Council also frequently meets at the request of a UN member—often a nation with a grievance about another nation's actions. The Security Council has 15 members, five of which hold permanent seats. The assembly elects the other ten members for two-year terms. The five permanent members—the United States, Britain, France, Russia (formerly the Soviet Union), and China—have the most power. These nations were the winning powers at the end of World War Ⅱ, and they still represent the bulk of the world's military might. Decisions of the Council require nine votes. But any one of the permanent members can veto an important decision. This authority is known as the veto right of the great powers. As a result, the Council is effective only when its permanent members can reach a consensus (一致同意) . The Council has a variety of ways it can try to resolve conflicts among countries. Usually the Council's first step is to encourage the countries to settle their disagreements without violence. The Council can mediate a dispute or recommend guidelines for a settlement. It can send peacekeeping troops into a distressed area. If war breaks out, the Council can call for a ceasefire. It can enforce its decisions by imposing economic sanctions on a country, or through joint military action.

单选题The two great men wrote these letters in ______. A) 1870s B) 1879s C) the 1870s D) the 1870

单选题A. understood B. took C. pollute D. rude

单选题Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world"s population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis. But that doesn"t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want. Instead, for all used except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs. Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland. No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water use. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.

单选题It was ______ then that he realized the importance of a good mastery of computer.