单选题That night, (tired) (though was he) , the Union Officer (went out) again to (look for) help.

单选题 Improved treatment has changed the outlook of HIV patients, but there is still a serious stigma attached to AIDS.

单选题Will there ever be another Einstein? This is the undercurrent of conversation at Einstein memorial meetings throughout the year. A new Einstein will emerge, scientists say. But it may take a long time. After all, more than 200 years separated Einstein from his nearest rival, Isaac Newton. Many physicists say the next Einstein hasn't been born yet, or is a baby now. That's because the quest for a unified theory that would account for all the forces of nature has pushed current mathematics to its limits. New math must be created before the problem can be solved. But researchers say there are many other factors working against another Einstein emerging anytime soon. For one thing, physics is a much different field today. In Einstein's day, there were only a few thousand physicists worldwide, and the theoreticians who could intellectually rival Einstein probably would fit into a streetcar with seats to share. Education is different, too. One crucial aspect of Einstein's training that is overlooked is the years of philosophy he read as a teenager — Kant, Schopenhauer and Spinoza, among others. It taught him how to think independently and abstractly about space and time, and it wasn't long before he became a philosopher himself. " The independence created by philosophical insight is — in my opinion — the mark of distinction between a mere artisan(工匠)or specialist and a real seeker after truth," Einstein wrote in 1944. And he was an accomplished musician. The interplay between music and math is well-known. Einstein would furiously play his violin as a way to think through a knotty physics problem. Today, universities have produced millions of physicists. There aren't many jobs in science for them, so they go to Wall Street and Silicon Valley to apply their analytical skills to more practical — and rewarding — efforts. " Maybe there is an Einstein out there today," said Columbia University physicist Brian Greene, "but it would be a lot harder for him to be heard. " Especially considering what Einstein was proposing. "The actual fabric of space and time curving? My God, what an idea!" Greene said at a recent gathering at the Aspen Institute. " It takes a certain type of person who will bang his head against the wall because you believe you'll find the solution. " Perhaps the best examples are the five scientific papers Einstein wrote in his "miracle year" of 1905. These "thought experiments" were pages of calculations signed and submitted to the prestigious journal Annalen der Physik by a virtual unknown. There were no footnotes or citations. What might happen to such a submission today? "We all get papers like those in the mail," Greene said. "We put them in the junk file. "

单选题It is the first of several agreements United States hopes to reach as it attempts to reduce labor costs by ＄ 5.8 billion and ______ bankruptcy.

单选题{{B}}(2){{/B}} There are some that would argue that hospitals are no place for dogs, while they are wrong. At least according to new research reported at the American Heart Association's Scientific Sessions 2005. For people hospitalized with advanced {{U}}heart disease{{/U}}, it is better to have visitors than to lie quietly alone. But one type of visitor seems to be especially beneficial, researchers reported on Tuesday. That visitor is a dog. In the first controlled study of the effects of pet therapy in a random sample of acute and critically ill heart patients, anxiety as measured on a standard rating scale dropped 24 percent for those visited by a dog and a human volunteer, by 10 percent for those visited by a volunteer alone and not at all for those with no visitors. Similar results were found in measures of heart and lung function. The senior author of the Pet Therapy Study, Kathie M. Cole, said 76 patients with heart failure, a condition that affects an estimated five million Americans, were randomly assigned one of the three visit types. The dogs, from 12 breeds, were screened for behavior and disease before participating in the study. "Some patients in the first group," Ms. Cole said, "began to smile and immediately engaged in conversation with dog and volunteer." "Their worries seemed to vanish from their faces," she said. The researchers examined the patients three times: right before the 12-minute visit, eight minutes into it and four minutes after it was over. Besides the anxiety measurement, researchers found, patients' levels of epinephrine, a hormone the body makes when under stress, dropped 17 percent when visited by a person and a dog, and 2 percent when visited by only a person. Epinephrine levels rose an average of 7 percent in the unvisited group in the study, which was financed by the Pet Care Trust Foundation, a nonprofit group. Pressure in the heart's top left chamber dropped 10 percent after a visit by volunteer and dog. The same pressure rose 3 percent for those visited by a volunteer and 5 percent for the unvisited group. Pressure in the pulmonary artery dropped 5 percent during and after a visit by volunteer and dog, but rose in the other two groups. Ms. Cole recommended further studies to determine how long the benefits lasted. "Dogs are a great comfort," she said. "They make people happier, calmer and feel more loved. That is huge when you are scared and not feeling well."

单选题This school is______ ; only very bright children are admitted.

单选题"When an individual enters a strange culture, he or she is like fish out of water." New comers feel at times that they do not' belong and consequently may feel alienated from the native members of the culture. When this happens, visitors may want to reject everything about the new environment and may glorify and exaggerate the positive aspects of their own culture. Conversely, visitors may scorn their native country by rejecting its values and instead choosing to identify with (if only temporarily) the values of the new country. Reactions to a new culture vary, but experience and research have shown that there are distinct stages in the adjustment process of foreign visitors. When leaving the comfortably secure environment of home, a person will naturally experience some stress and anxiety. The severity of cultural shock depends on visitor's personalities, language ability, emotional support, and duration of stay. It is also influenced by the extent of differences, either actual or perceived, between the two cultures. Visitors coming for short periods of time do not always experience the same intense emotions as visitors who live in foreign countries for longer terms. The adjustment stages during prolonged stays may last several months to several years. The following stages are common: (1) Honeymoon period (2) Cultural shock (3) Initial adjustment (4) Mental isolation (5) Acceptance and integration. Individuals experience the stages of adjustment in different ways. When visitors have close relatives in the new culture or speak the foreign language fluently, they may not experience all the effects of cultural shock or mental isolation. An exile or refugee would adjust differently form someone who voluntarily traveled to a new country. Certain individuals have difficulties adapting to a new environment and perhaps never do; others seem to adjust well from the very beginning of their stay.

单选题While the polltakers are most widely known for their political surveys, the greatest part of their work is on behalf of American business. There are three kinds of commercial surveys. One is a public relations research, such as that done for banks, which finds out how the public feels about a company. Another is employee-attitude research, which learns from rank-and-file workers how they really feel about their jobs and their bosses, and which can avert strikes by getting to the bottom of grievances quickly. The third, and probably most spectacular, is marketing research, testing public receptivity to products and designs. The investment a company must make for a new product is enormous--$ 5,000,000 to $ 10,000,000, for instance, for just one new product. Through the surveys a company can discover in advance what objections the public has to competing products, and whether it really wants a new one. These surveys are actually a new set of signals permitting better communication between business and the general public--letting them talk to each other. Such communication is vital in a complex society like our own. Without it, we would have not only tremendous waste but the industrial anarchy of countless new unwanted products appearing and disappearing.

单选题While crossing the mountain areas, all the men had guns for protection lest they ________ by the local bandits.

单选题 Once upon a time, innovation at Procter & Gamble flowed one way: from the United States outward. While the large Cincinnati-based corporation was no stranger to foreign markets, it usually sold them products that were already familiar to most Americans. Many Japanese families, for instance, swaddle their babies in Pampers diapers, and lots of Venezuelans brush their teeth with Crest. And of course (company executive assumed) American at home wanted these same familiar, red-white and blue brands. We might buy foreign-made cars, or chocolates, or cameras but household cleaners and detergents? Recently, however, P&G broke with this long-standing tradition. Ariel, a P&G laundry detergent, was born overseas, and is a familiar sight on store shelves in Europe and Latin America. Now bilingual packages of Ariel Ultra, a super-concentrated cleaner, are appearing on supermarket shelves in Los Angeles. Ariel's appearance in the United States reflects demographic changes making Hispanics the nation's fastest-growing ethnic group. Ariel is a hit with this population. In fact, many Mexican immigrants living in Southern California have been "importing" Ariel from Tijuana, Mexico. "Hispanics knew this product and wanted it," says P&G spokeswoman Marie Salvado. "We realized that we couldn't convince them to buy (our) other laundry detergents." P&G hopes that non-Hispanic consumers will give Ariel a try too. Ariel's already strong presence in Europe may provide a springboard for the company to expand into other markets as well. Recently P&G bought Rakona, Czechoslovakia's top detergent maker. Ariel, currently a top seller in Germany, is likely to be one of the first new brands to appear in Czech supermarkets. And Ariel is not the only foreign idea that the company hopes to transplant back to its home territory. Chinch, an all-purpose spray cleaner similar to popular European products, is currently being test-marketed in California and Arizona. Traditionally Americans have used separate cleaners for different types of surfaces, but market research shows that American preferences are becoming more like those in other countries. Insiders note that this new reverse flow of innovation reflects more sweeping changes at Procter & Gamble. The firm has hired many new Japanese, German, and Mexican managers who view P&G's business not as a one-way flow of American ideas, but a two-way exchange with other markets. Says Bonita Austin of the investment firm Wertheim-Schroeder, "When you met with P&G's top managers years ago, you wouldn't have seen a single foreign face." Today "they could even be in the majority." As Procter & Gamble has found, the United States is no longer an isolated market. Americans are more open than ever before to buying foreign-made products and to selling U. S.-made products overseas.

单选题 Think of all the criminals who have killed, all the soldiers who have killed; consider the mass murder of Jews in Nazi Germany. Is there something inside human beings that allows us to take part in this sort of violence, or were these people swept along by the situation? Stanley Milgram, a New York psychologist, designed an experiment to find answers to this question, paying adult males four and a half dollars to act the role of "teacher" in a complicated experiment. The "teachers" were to ask questions of a "learner", a middle-aged man in another room. If the learner gave an incorrect answer, the teacher was instructed to turn a knob to send an electric current to the learner's chair. There were thirty positions on the control knob, with the shocks ranging from 15 to 450 volts, the last position marked "Danger: Severe Shock". The teachers were told to increase the severity of the shock with each incorrect response. With the first few shocks, the learner could be heard over the intercom, grunting and moaning. When the dial reached 150, he demanded that the experiment be ended; shortly afterwards, at 180 volts, he began to complain of the pain. At 300 volts, he complained about his heart condition, screamed, and no longer responded to the questions; but the teachers who complanined about their roles in the experiment were told the experiment had to continue. According to the rules, the learner's failure to respond was an "error", so he must be shocked. A group of psychiatrists was asked for predictions. Certainly, they said, most people would not punish the victim beyond 150 volts. Furthermore, they predicted fewer than four percent would persist up to 300 volts; only abnormal individuals--less than one tenth of a percent--would proceed to 450 volts. And, in fact, nearly every "teacher" did protest--each became concerned that he might injure the learner, and many said they could not continue to follow instructions. At 180 volts, one "teacher" said, "He's hollering. He can't stand it; what if anything happens to him? I mean who is going to take responsibility if anything happens to that gentleman?" When the experimenter said he would accept responsibility, the teacher meekly responded, "All right." Some teachers, alarmed by the silence in the next room, called out to the learner to answer so they wouldn't have to continue shocking him. In fact, most of the teachers protested, but the important thing is that they did not disobey their instruction. Sixty-two percent of all the subjects delivered shocks all the way up to 450 volts--the average highest shock was 370 volts. Of course, the learner was not being shocked. Even his screams were tape-recorded. But this experiment and similar variations of it have been repeated several times, and the results are invariably the same: in the presence of authority, in a situation governed by rules. Personality tests given to the subjects who delivered the shocks of 450 volts show that they are not abnormal or sick in any way. They're exactly like the rest of us.

单选题It is impossible to ______ whether she'll be well enough to come home from the hospital next month.(2004年湖北省考博试题)

单选题It is hard to tell whether we are going to have a boom in the economy or a______.(中南大学2006年试题)

单选题A corps of so-called barefoot doctors are trained in hygiene, preventive medicine, acupuncture, and routine treatment of common diseases.

单选题Now, don't tell anyone else what I've just told you. Remember, it's ______.(2002年中国科学院考博试题)

单选题The poor girl spent over half a year in the hospital but she is now ______ for it.

单选题The senator of New York courted black voters, considered crucial to ______ the Democratic presidential nomination, in a series of campaign stops. A. confining B. securing C. tampering D. pervading

单选题A mistake is rarely atoned for by a single apology, however profuse.

单选题James Joyce was ______ as the greatest writer of the 20th century.