单选题A: It seems to be clearing up. B: ______

单选题American society is not nap (午睡) friendly. In fact, says David Dinges, a sleep specialist at the University of Pennsylvania School of Medicine. '"There's even a prohibition against admitting we need sleep. " Nobody wants to be caught napping or found asleep at work. To quote a proverb: "Some sleep five hours, nature requires seven, laziness nine and wickedness eleven. " Wrong. The way not to fall asleep at work is to take naps when you need them. "We have to totally change our attitude toward napping," says Dr. William Dement of Stanford University, the godfather of sleep research. Last year a national commission led by Dement identified an "American sleep debt" which one member said was as important as the national debt. The commission was concerned about the dangers of sleepiness, people causing industrial accidents or falling asleep while driving. This may be why we have a new sleep policy in the White House. According to recent reports, president Clinton is trying to take a half hour snooze (打瞌睡) every afternoon. About 60 percent of American adults nap when given the opportunity. We seem to have "a midafternoon quiet phase" also called "a secondary sleep gate. " Sleeping 15 minutes to two hours in the early afternoon can reduce stress and make us refreshed. Clearly, we were born to nap. We Superstars of Snooze don't nap to replace lost shut eye or to prepare for a night shift. Rather, we "snack" on sleep, whenever, wherever and at whatever time we feel like it. I myself have napped in buses, cars, planes and on boats; on floors and beds; and in libraries, offices and museums.

单选题The object for each player in the game of chess is to trap the other player's king into a position from which escape is impossible.

单选题Being ______ about food, she doesn't eat any chicken and pork, so fish is her favorite.

单选题The news reports completely Uoverlooked/U the more profound political implications of the events.

单选题Elizabeth Blackwell founded an academy to train women physicians in 1868.

单选题The Uagony/U of being found ignorant and exposed to the disapproval of the others was beyond words.

单选题I propose that we discussed this at the next meeting.

单选题Job sharing is popular with young mothers mainly because ______.

单选题We suspect there is a quite Udeliberate/U attempt to sabotage the elections and undermine the electoral commission.

单选题Only native-born citizens are eligible for the U.S. Presidency.

单选题A: Do you think you could lend me some of your records?B: Until when?A: Oh, just over the holidays.B: I'm not sure. ______

单选题The two ferry disasters occurred

单选题Talks on climate change resumed in the German city of Bonn on July 16 to {{U}}combat{{/U}} global warming.

单选题Hidden hotel costs can be a source of frustration to the {{U}}frugal{{/U}} traveler.

单选题Dr. Johnson suggested that we pause and contemplate what we are talking about.

单选题Terry boasted that he could finish the project by himself {{U}}in no time{{/U}}.

单选题Conventional wisdom about conflict seems pretty much cut and dried. Too little conflict breeds apathy (冷淡) and stagnation (呆滞). Too much conflict leads to divisiveness (分裂) and hostility. Moderate levels of conflict, however, can spark creativity and motivate people in a healthy and competitive way. Recent research by Professor Charles R. Schwenk, however, suggests that the optimal level of conflict may be more complex to determine than these simple generalizations. He studied perceptions of conflict among a sample of executives. Some of the executives worked for profit-seeking organizations and others for not-for-profit organizations. Somewhat surprisingly, Schwenk found that opinions about conflict varied systematically as a function of the type of organization. Specifically, managers in not-for-profit organizations strongly believed that conflict was beneficial to their organizations and that it promoted higher quality decision making than might be achieved in the absence of conflict. Managers of for-profit organizations saw a different picture. They believed that conflict generally was damaging and usually led to poor-quality decision making in their organizations. Schwenk interpreted these results in terms of the criteria for effective decision making suggested by the executives. In the profit-seeking organizations, decision-making effectiveness was most often assessed in financial terms. The executives believed that consensus rather than conflict enhanced financial indicators. In the not-for-profit organizations, decision-making effectiveness was defined from the perspective of satisfying constituents. Given the complexities and ambiguities associated with satisfying many diverse constituents executives perceived that conflict led to more considered and acceptable decisions.

单选题A Boeing 747 crashed into a hillside while attempting to land during a nighttime storm; 228 of the 254 people who were on board the plane ______.