单选题I don't mind a bit if you bring your friends in for a drink, but it is rather too much when ten people arrive ______for dinner.

单选题 Passage 4 One reaction to all the concern about tropical deforestation is a blank stare that asks the question, "Since I don't live in the tropics, what does it have to do with me?" The answer is that your way of life, wherever you live in the world, is tied to the tropics in many ways. If you live in a house, wash your hair, eat fruit and vegetables, drink soda, or drive a car, you can be certain that you are affected by the loss of tropical' forests. Biologically, we are losing the richest regions on earth when, each minute, a piece of tropical forest the size of ten city blocks vanishes. As many as five million species of plants, animals and insects, 40 to 50 percent of all living things, live there, and are being irrevocably lost faster than they can be found and described. Their loss is incalculable. Take medicine, for example. Less than one percent of tropical forest plants have been examined for their chemical compounds. Nonetheless, scientists have integrated a wealth of important plants into our everyday lives. The West African calabar bean is used to treat glaucoma, while the sankerfoot plant of India yields reserpine, essential for treating hypertension. A West African vine provides the basis for strophanthus, a heart medicine. Quinine, an alkaloid derived from boiling the bark of the cinchona tree, is used to prevent and treat malaria. Derivatives from the rosy periwinkle offer a 99 percent chance of remission for victims of lymphocytic leukemia, as well as a 59 percent chance of recovery from Hodgkin's disease. In fact, of the 3, 000 plant species in the world known to contain anti-cancer properties, 2, 100 are from the tropical rain forest. Then there is rubber. For many uses, only natural rubber from trees will do, synthetics are not good enough. Today, over half of the world's commercial rubber is produced in Malaysia and Indonesia, while the Amazon's rubber industry produces much of the world's four million tons. Adding ammonia to rubber produces latex which is used for surgical gloves, balloons, adhesives, and foam rubber. Latex, plus a weak mixture of acid results in sheet rubber used for footwear and many sporting goods. Literally thousands of tropical plants are valuable for their industrial uses. Many provide fiber and canes for furniture, soundproofing and insulation. Palm oil, a product of the tropics, brings to your table margarine, cooking oil, bakery products, and candles. Palm nut oil, from the seed kernel inside the fruit, is found in soap, candles, and mayonnaise. The sap from Amazonian copaiba trees, poured straight into a fuel tank, can power a truck. At present, 20 percent of Brazil's diesel fuel comes from this tree. An expanded use of this might reduce our dependency on irreplaceable fossil fuels. Many scientists assert that deforestation contributes to the greenhouse effect, the heating of the earth from increased carbon dioxide in the atmosphere. As we destroy forests, we lose their ability to convert carbon dioxide into oxygen. Carbon dioxide levels could double within the next half-century, warming the earth by as much as 4. 5 degrees. The result? A partial meltdown of the polar ice caps, raising sea levels as much as 24 feet. A rise of 15 feet would threaten anyone living within 35 miles of the coast. Far-fetched? Perhaps, but scientists warn that by the time we realize the severe effects of tropical deforestation, it will be 20 years too late. Can tropical deforestation affect our everyday lives? We only have to look at the catalogued tropical forests and the abundance of wondrous products from which we benefit every day to know the answer. After all, the next discovery could be a cure for cancer or the common cold, or the answer to feeding the hungry, or fuelling our world for centuries to come.Comprehension Questions

单选题Real Policemen hardly recognize any resemblance between their lives and what they see on TV. The first difference is that a policeman's real life revolves around criminal law. He has to know exactly what actions are crimes and what evidence can be used to prove them in court. He has to know nearly as much law as a professional lawyer, and what is more, he has to apply it on his feet, in the dark and rain, running down a street after someone he wants to talk to. Little of his time is spent in chatting, he will spend most of his working life typing millions of words on thousands of forms about hundreds of sad, unimportant people who are guilty of stupid, petty crimes. Most television crime drama is about finding the criminal: as soon as he's arrested, the story is over. In real life, finding criminals is seldom much of a problem. Except in very serious eases like murders and terrorist attacks little effort is spent on searching. Having made an arrest, a detective really starts to work. He has to prove his case in court and to do that he often has to gather a lot of evidence. The third big difference between the drama detective and the real one is the unpleasant pressures: first, as members of a police force they always have to behave absolutely in accordance with the law; secondly, as expensive public servants they have to get results. They can hardly ever do both. Most of the time some of them have to break the rules in small ways. If the detective has to deceive the world, the world often deceives him. Hardly anyone he meets tells him the truth. And this separation the detective feels between himself and the rest of the world is deepened by the simplemindedness—as he sees it—of citizens, social workers, doctors, law-makers, and judges, who, instead of eliminating crime punish the criminals less severely in the hope that this will make them reform. The result, detectives feel, is that nine-tenths of their work is recatching people who should have stayed behind bars. This makes them rather cynical.

单选题She has ______ some brilliant scheme to double her income.

单选题" Two hundred eight million, two hundred nine million, two hundred ten million..." That is the sound of solid waste hitting the bottom of garbage cans all over United States in 1996. Solid wastes are materials that are discarded or thrown away after use by consumers and businesses. This does not include fluid materials. During that year, Americans threw away 210 million tons(about 43 pounds/20 kilograms per person daily)of garbage. We throw away 12. 4 million tons of glass and about 80 million tons of paper products. America also throws away large amounts(in tons)of food scraps, yard wastes, plastics, sludge from sewage treatment plants, and other materials. That is almost a mountain of garbage. Even though we make an effort to recycle and compost our solid waste, the amount of how to keep it from polluting our environment. If solid waste is disposed of incorrectly, it can contaminate our surface and underground water supplies. Currently, our municipal waste or waste collected by our cities and towns, goes to landfills. Today, about 85% our garbage goes to landfills or garbage dumps. This waste must be treated to keep rats, flies and other animals from building their home in the landfills. The treat also prevents the growth of bacteria and other organism that carry diseases. So, how do we handle this mountain of garbage? Scientists have come up with different methods for handling our waste problem. One type of waste disposal called sanitary landfill was first used in Fresno California, in 1937. In sanitary landfill, the solid waste is spread in thin layers that compacted and covered with a layer of earth. This is a more expensive method, but it takes away the hazards that are caused by landfills. It also allowed the land to be used for building or recreation. The negative of the landfills is that it's tough to find open land and this process is very expensive. The land also needs its water sources protected so that the water will not pollute the water supply. Landfill(water dumps)and sanitary landfills rely on the natural biodegradability of the solid wastes. Solid wastes are biodegradable if they can decay or break down through the action of living organisms and return to the earth. However certain materials take longer to decay than others, and some materials do not decay or decompose at all. Scientists need to find other methods of waste disposal. Incineration and recycling are methods that are currently in use today.

单选题The report______.poor safety standards for the accident.

单选题Americans are highly ______, and therefore may find it difficult to become deeply involved with others. A. moving B. mobile C. movable D. motional

单选题A radical new bicycle had its first public showing at the National British Cycling Championships in Shrewsbury last weekend. Based on the gold medal- winning design from the Barcelona Olympics, it is the first commercial mountain bike made of a single piece of carbon fibre. Bicycles for amateurs have up to now been made of steel, aluminum or magnesium tubes welded together into the conventional "A-frame" shape. But last year, the British competitor Chris Boardman set world records while winning titles in the Olympic cycling pursuit events on a custom-built, carbon-fibre bicycle with lower weight and wind resistance than standard models. Because carbon fibre is born light and extremely strong, it does not need the A-frame shape, saving further weight Carbon fibre can also be moulded in a single piece, avoiding the weakness of welds. The new bike, which will cost between $ 2000 and $ 3000 when it reaches the shops next month, has the same advantages as the Olympic model, it weighs about 11 kilograms, a saving of 1.5 kilograms on metal frames　 With no crossbar, it has a lower centre of gravity, making it easier to use in race conditions. "When you're doing some aggressive riding, you throw the bike about form side to side," explains Eddie Eccleston, director of British Eagle, a British bicycle manufacturer based in Powys, Wales, which is marketing the bikes. "The low centre of gravity! gives you better control." The frames are being made in the US for British Eagle by SP systems in Camarillo, California, which has clients in the aerospace industry. "This is aerospace technology brought into cycling by enthusiasts," says Eccleston. When professionals tested racing versions of the bike before the Tour de France, they were quicker than metal versions by up to 3 seconds per kilometre. The new design has no struts between the saddle and the back wheel; instead, the frame's flexibility can be "tuned" to individual tastes by changing the mixture of Kevlar fibre and carbon fibre in the back wheel strut, allowing up to 5 centimetres of movement. The carbon-fibre design has a lower centre of gravity and smoother back-wheel suspension than conventional bikes.

单选题In the U.S., the Republican’s doctrines were slightly liberal, whereas the Democrats’ were hardly _____________.

单选题The Olympic Games were watched by______billions of people around the world. (2002年武汉大学考博试题)

单选题There is no doubt that the______ of these goods to the others is easy to see.(2005年电子科技大学考博试题)

单选题1 In our society the razor of necessity cuts close. You must make a buck to survive the day. You must work to make a buck. The job is often a chore, rarely a delight. No matter how demeaning the task, no matter how it dulls the senses or breaks the spirit, one must work. Lately there has been a questioning of this " work ethic", especially by the young. Strangely enough, it has touched off profound grievances in others hitherto silent and anonymous. Unexpected precincts are being heard from in a show of discontent by blue collar and white. On the evening bus the tense, pinched faces of young file clerks and elderly secre taries tell us more than we care to know. On the expressways middle-management men pose without grace behind their wheels, as they flee city and job. In all, there is more than a slight ache. And there dangles the impertinent question. Should there not be another increment, earned though not yet received, to one's daily work—an acknowledgment of a man's being? In fact, what all of us are looking for is a calling, not just a job. Jobs alone are not being enough for people.

单选题Questions 27—30 are based on the following interview on freezing humans. You now have 20 seconds to read Questions 27—30.

单选题In the past 10 years, the company has gradually ______ all of its smaller rivals. A. engaged B. occupied C. monopolized D. absorbed

单选题Some people find that certain foods______their headaches.(复旦大学2011年试题)

单选题The pursuit was ______ when it was clear that we had won the day.