单选题Woman: Now, Richard, would you care to explain how the answers to the test questions appeared on your desk? Man: I can't, Professor Harley. Someone must have left them on my desk. Question: What is the man's problem?

单选题Woman: Mark, you shouldn't have been too neglectful and thoughtless about drugs.Man: I know what you mean. But I equally know what I am doing and where I am going.Question: What is the man's reaction to what the woman said?

单选题{{B}}Passage One{{/B}} "Humans should not try to avoid stress any more than they would shun food, love or exercise." said Dr. Hans Selye, the first physician to document the effects of stress on the body. While here's no question that continuous stress is harmful, several studies suggest that challenging situations in which you're able to rise to the occasion can be good for you. In a 2001 study of 158 hospital nurses, those who faced considerable work demands but coped with the challenge were more likely to say they were in good health than those who felt they couldn't get the job done. Stress that you can manage may also boost immune(免疫的)function. In a study at the Academic Center for Dentistry in Amsterdam, researchers put volunteers through two stressful experiences. In the first, a timed task that required memorizing a list followed by a short test, subjects believed they had control over the outcome. In the second, they weren't in control: They had to sit through a gory(血淋淋的)video on surgical procedures. Those who did go on the memory test had an increase in levels of immunoglobulin(免疫球蛋白)A, an antibody that's the body's first line of defense against germs. The video-watchers experienced a downturn in the antibody. Stress prompts the body to produce certain stress hormones. In short bursts these hormones have a positive effect, including improved memory function. "They can help nerve cells handle information and put it into storage," says Dr. Bruce McEwen of Rockefeller University in New York. But in the long run these hormones can have a harmful effect on the body and brain. "Sustained stress is not good for you," says Richard Morimoto, a researcher at Northwestern University in Illinois studying the effects of stress on longevity (长寿),"It's the occasional burst of stress or brief exposure to stress that could be protective. "(325w)

单选题The accepted {{U}}criteria{{/U}} of adequate diet have been challenged by new discoveries in nutrition.

单选题{{B}}Passage Four{{/B}} She was slim and he liked her that way. So he called a lawyer. The result was a contract. According to the document, the fresh-faced bride agreed to pay a fine for each pound she gained in weight, the money refundable upon its loss. The paper signed, and the wedding went on. This is a prenuptial (婚前的)agreement—one more indication of the strange pass of marriage in this most transactional decade. You are welcome to marriage, contractual style, where increasingly detailed legal documents spell out everything from who's going to do the dishes to who's going to get the house when you split. This is family planning taken to extreme. Once employed solely by the rich, second-timers and the old industrialist carrying off the latest young cookie, the prenuptial agreement—a written pact between a couple outlining the financial obligations in the event of divorce—is becoming commonplace in a litigious (爱打官司的),disillusioned and materialistic age in which one in every two marriages is projected to end in divorce. The only question is: What about love? When asked whether anyone believes in Cupid (爱神)anymore, Dr. Michael Vincent Miller says, "Given a century that is full of sexual liberation, computer-dating services and so on, one feels tempted to reply,' only in a mood of desperate nostalgia (怀旧 )'. ""Pre-nups" (prenuptial agreements)do assume negativity. Founded on disillusionment, they cannot be separated from the high divorce rate in the United States. The result, argues Miller, is a kind of defending mentality. "We've gotten good at managing finiteness, failure and trouble with a sort of 'What' s yours is yours and what's mine is mine's realism'. We've seen it isn't all about love. We've seen there's power politics in there—a fight for control, and when you've got those things, you're halfway to lawyers and money." In other ways, however, the compacts embody positive, even idealistic thinking about marriage, love and relations, a law scholar Isabel Marcus believes. Marcus says , "Contracts could spell the end of romantic love as salvation. They say love exists, but that it's best accompanied by good, hard thinking about equitability (平等). By writing a contract, the couple gains control of its marriage. "What's good is it contributes to honesty; what's unfortunate is the idea that any contract can govern your emotions," says the author of the book "The Nature of Love."

单选题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In mathematics the term "solid" describes a geometric figure with three dimensions.

单选题This procedure describes how suggestions for improvements to the systems are

单选题After the ______ application is approved, the cyberspace should not be left untouched.

单选题What makes teenagers moody and impulsive? The answer used to be raging hormones plus a dearth of(短缺) life experiences. But three years ago this simple equation was blown apart by evidence from brain scans of strange goings-on behind the teenage forehead. Till then, scientists had thought the brain's internal structure was fixed by the end of childhood. The new scans showed the brain's frontal cortex(皮层) thickening just before puberty(青春期), then slowly shrinking back to normal during the teenage years. Suddenly, the erratic huffiness(发怒) seemed to make sense: the teenage brain was a work in progress, a house in the process of being rewired. Now comes more evidence of neural turmoil. According to psychologists in California, the speed with which youngsters can read the emotional expressions on people's faces dips suddenly at around the age of 11 or 12 and takes years to get back on track. The latest study, like the brain scan research before it, is a welcome and necessary part of building up a picture of a typical teenage brain so that scientists can get a better handle on what might be happening in the mental illnesses that appear to be afflicting children and adolescents in ever greater numbers. But there are dangers. Scientists still have no idea how to interpret the subtle changes seen in adolescent brain scans. Yet in the wrong hands, these findings could be used to justify hothousing, impulse control training and other dubious attempts to get the most out of malleable teenage brain cells. The science could also spark a new wave of moralising based on a perceived need to protect teenagers' evolving brain connections from evil or toxic influences. Incredibly, some scientists have already suggested in the press that the brain scan evidence somehow proves that it is biologically bad for teenagers to play video games or lie on the couch watching MTV. A hundred years, ago one well-known "expert" urged teenage boys to drink six to eight glasses of hot water a day to flush impure thoughts from their bodies. Have we really learned so little?

单选题UPrior to/U his appointment as foreign minister, Mr. Li was the vice minister of foreign affairs.

单选题A: I think cartoons on TV are not good for kids to watch. There's too much violence in them. B: ______

单选题The secret police tortured the captive (俘虏) to obtain information.

单选题The design of the orbiter indicates ______

单选题Nobody can help but be Ufascinated/U by the world into which he is taken by the science fiction.

单选题After a prolonged siege, the town was rendered up to the ______.

单选题In order to understand the concept of infinity, we must think in much broader terms than we {{U}}are accustomed to{{/U}}.

单选题Brazil has become one of the developing world's great successes at reducing population growth—but more by accident than design. While countries such as India have made joint efforts to reduce birth rates, Brazil has had better result without really trying, says George Martine at Harvard. Brazil's population growth rate has dropped from 2.99% a year between 1951 and 1960 to 1.93% a year between 1981 and 1990, and Brazilian women now have only 2.7 children on average. Martine says this figure may have fallen still further since 1990, an achievement that makes it the envy of many other Third World countries. Martine puts it down to, among other things, soap operas (通俗电视连续剧) and instalment (分期付款) plans introduced in the 1970s. Both played an important, although indirect, role in lowering the birth rate. Brazil is one of the world's biggest producers of soap operas. Globo, Brazil's most popular television network, shows three hours of soaps six nights a week, while three others show at least one hour a night. Most soaps are based on wealthy characters living the high life in big cities. "Although they have never really tried to work in a message towards the problems of reproduction, they describe middle and upper class values not many children, different attitudes towards sex, women working," says Martine. "They sent this image to all parts of Brazil and made people conscious of other patterns of behavior and other values, which were put into a very attractive package. " Meanwhile, the installment plans tried to encourage the poor to become consumers. "This led to an enormous change in consumption patterns and consumption was incompatible (不相容的) with unlimited reproduction. " says Martine.

单选题(The population) of this small town has (more than) (doubled) it in the past (few decades).

单选题Thomas Edison's office was always disorganized with books and papers.