单选题He tried but failed in his attempt to avoid being Uprosecuted/U by practicing bribery.

单选题 Experts urge a reforesting of cleared areas, promotion of reduced-impact logging, and ______ agriculture, to maintain the rain forest.

单选题43 By ______ computation, he estimated that the repairs on the house would cost him a thousand dollars.

单选题Passage Two The collapse of the Earth's magnetic field--which guards the planet and guides many of its creatures--appears to have started about 150 years ago, the New York Times reported last week. The field' s strength has decreased by 10 or 15 per cent so far and this has increased the debate over whether it signals a reversal of the planet' s lines of magnetic force. During a reversal, the main field weakens, almost vanishes, and reappears with opposite polarity (极). The transition would take thousands of years. Once completed, compass needles that had pointed north would point south. A reversal could cause problems for both that rely on the magnetic field for navigation would find migration confusing. But experts links between past field reversals and species extinctions. Although a total transition may be hundreds or thousands of years away, the rapid decline in magnetic strength is already affecting satellites. Last month, the European Space Agency approved the world's largest effort at tracking the field's shifts. A group of new satellites called Swarm is to monitor the collapsing field with far greater precision. "We want to get some idea of how this would evolve in the near future, just like people trying to predict the weather," said Gauthier Hulot, a French geophysicist working on the satellite plan. "I'm personally quite convinced we should be able to work out the first predictions by the end of the mission." No matter what the new findings, the public has no reason to panic. Even if a transition is coming on its way, it might take 2,000 years to mature. The last one took place 780,000 years ago, when early humans were learning how to make stone tools. Deep inside the Earth flow hot currents of melted iron. This mechanical energy creates electromagnetism. This process is known as the geophysical generator. In a car's generator, the same principle turns mechanical energy into electricity. No one knows precisely why the field periodically reverses. But scientists say the responsibility probably lies with changes in the disorderly flows of melted iron, which they see as similar to the gases that make up the clouds of Jupiter.

单选题The 4th paragraph suggests that _______.

单选题Thirty-one million Americans are over 60 years of age, and twenty-nine million of them are healthy, busy, productive citizens. By the year 2030, one in every five people in the United States will be over 60. People are members of the fastest-growing minority in this country. Many call this the "graying of America". In D73, a group called the "Gray Panthers" was organized. This group is made up of young and old citizens. They are trying to deal with the special problems of growing old in America. The Gray Panthers know that many elderly people have health problems; some cannot walk well, others cannot see or hear well. Some have financial problems; prices are going up so fast that the elderly can't afford the food, clothing, and housing they need. Some old people are afraid and have safety problems. Others have emotional problems. Many elderly are lonely because of the death of a husband or a wife. The Gray Panthers know another fact, too. Elderly people want to be as independent as possible. So, the Gray Panthers are looking for ways to solve the special problems of the elderly. The president of the Gray Panthers is Maggie Kuhn, an active woman in her late 70s. She travels across the United States, educating both young and old about the concerns of elders. One of the problems she talks about is where and how elders live. She says that Americans do not encourage elders to live with younger people. As far as Maggie Kuhn is concerned, only elders who need constant medical care should be in nursing homes. Maggie Kuhn knows that elders need education, too. She spends lots of time talking to groups of older Americans. She encourages them to continue to live in their own houses if it is possible. She also tells them that it is important to live with younger people and to have children around them. This helps elders to stay young at heart.

单选题There were still a few surprises, as a squeal here and there in the dark announced, but we did learn to "see with our feet"—lessons in trail Braille.

单选题This can help to ______ something that the students may not. have comprehended.

单选题Teachers of young children should scrupulously avoid ridicule and sarcasm.

单选题I've never ______ the theory that people are more important than animals. A. subscribed to B. hung on C. engaged in D. indulged in

单选题When she heard that she broke the world record. she felt an irresistible ______ to cry at the winner's stand. A.courtesy B.demonstrates C.bravery D.impulse

单选题An embarrassing blunder nearly ______ his career before it got off the ground. A. eradicated B. blighted C. decayed D. deteriorate

单选题Human beings are animals. We breathe, eat and digest, and reproduce the same life【C1】______common to all animals. In a biological laboratory rats, monkeys, and humans seem very much the same. However, biological understanding is not enough:【C2】______itself, it can never tell us what human beings are.【C3】______to our physical equipment the naked human body—we are not an【C4】______animal. We are tropical creatures,【C5】______hairless and sensitive to cold. We are not fast and have neither claws nor sharp teeth to defend ourselves. We need a lot of food but have almost no physical equipment to help us get it. In the purely physical【C6】______, our species seems a poor【C7】______for survival. But we have survived—survived and multiplied and【C8】______the earth. Some day we will have a【C9】______living on the moon, a place with neither air nor water and with temperatures that turn gases into solids. How can we have done all these things? Part of the answer is physical.【C10】______its limitations, our physical equipment has some important【C11】______. We have excellent vision and hands that can【C12】______objects with a precision unmatched by any other【C13】______. Most importantly, we have a large brain with an almost【C14】______number of neural【C15】______

单选题Cultivated crops and grazing lands ______ less than one-third of the world's land area.

单选题His job was so tiring that he felt absolutely ______. A. scrabbled B. sharpened C. shattered D. scattered

单选题Marriage therapists teach a skill called active listening. Each partner takes a turn listening, then paraphrases what he"s heard and validates it. There is, however, a problem. It rarely works. For 80 percent of couples, active listening is too hard. It feels wooden, like emotional gymnastics. Nor does "fighting well predict happy marriages". Even happy couples have screaming matches. Every time you raise a hot-button issue, such as the in-laws or money, does your husband suddenly clam up? More than 80 percent of the time, it"s the wife who brings up sticky material issues, while the husband tries to avoid discussing them. This isn"t a symptom of a troubled marriage—it"s true in most happy marriages. You"ll often hear that staying in a bad marriage is worse for everybody concerned—especially the children—than getting divorced. That may be true if your home is so riddled with hostility that it"s like a war zone. But University of Chicago sociologist Linder J. Waite says she has found that 75 percent of couples who rated their marriages as miserable but stayed of married were happy five years later. We usually think the strongest marriages are those that survive major traumas, such as bankruptcy or an extramarital affair. But frequently, dealing with the little things, those daily annoyances, eat away at a marriage. "Every couple experiences disappointment as initial romance and passion fade and they discover all their differences," says Wolin. "He doesn"t do enough housework. She is too emotional. He watches too much TV. She"s too lenient with the kids. People think these differences as problem, but they"re actually opportunities to build marital muscles. "