单选题Competition breeds excellence. Ask anyone who pays attention to the car industry and they will tell you that the family-sedan segment is just brutal, with manufacturers fighting tooth and nail over every sale. In fact, that market has become more competitive in recent years. It used to just be the Camry and the Accord fighting for supremacy, but now you have new (Hyundai) and old (Ford) competitors, among others, joining the fight, with interesting, well-made, compelling products. It"s a great time to be shopping for a new family sedan. Compare that with the state of the tablet market today. Hewlett-Packard is in retreat. Research in Motion is in a holding pattern. Motorola has been sold and its tablet is now an afterthought. Samsung fights the good fight, hut it trails Apple"s market share by 50 percentage points. Apple is not just ahead of the pack, it almost is the pack. Now, some would say that this is also a simple result of economic laws at work: Apple makes a superior product, therefore it gets most of the sales. But what would be really great is that, Apple, Google, Microsoft, and H.P., locked in an epic battle for tablet supremacy, are each releasing new and better products at a furious pace, and each dropping prices substantially at a steady clip. Apple is driving innovation and creativity with each upgrade of the iPad it releases. But this isn"t about whether you prefer Apple or Android for your tablet. This isn"t about picking sides. As a consumer, I want there to be robust competition across the board. I want Coke and Pepsi, Target and Wal-Mart, Engadget and Gizmodo. If you"re a fan of Apple, you want there to be a worthy rival push it, to keep its feet to the fire. If you don"t like Apple, you want someone else in the game so that Apple doesn"t suck all the air out of the room. And you want Apple to do the same pushing and foot scorching to its competitor that another company would do to it.

单选题 The rise of multinational corporations (跨国公司), global marketing, new communications technologies, and shrinking cultural differences have led to an unparalleled increase in global public relations or PR. Surprisingly, since modern PR was largely an American invention, the U. S. leadership in public relations is being threatened by PR efforts in other countries. Ten years ago, for example, the world's top five public relations agencies were American-owned. In 1991, only one was. The British in particular are becoming more sophisticated and creative. A recent survey found that more than half of all British companies include PR as part of their corporate (公司的) planning activities, compared to about one-third of U.S. companies. It may not be long before London replaces New York as the capital of PR. Why is America lagging behind in the global PR race? First, Americans as a whole tend to be fairly provincial and take more of an interest in local affairs. Knowledge of world geography, for example, has never been strong in this country, Secondly, Americans lag behind their European and Asian counterparts (相对应的人) in knowing a second language. Less than 5 percent of Bur-son-Marshall's U.S. employees know two languages. Ogilvy and Mather has about the same percentage. Conversely, some European firms have half or more of their employees fluent in a second language. Finally, people involved in PR abroad tend to keep a closer eye on international affairs. In the financial PR area, for instance, most Americans read the Wall Street Journal. Overseas, their counterparts read the Journal as well as the Financial Times of London and The Economist, publications not often read in this country. Perhaps the PR industry might take a lesson from Ted Turner of CNN (Cable News Net-work). Turner recently announced that the word "foreign" would no longer be used on CNN news broadcasts. According to Turner, global communications have made the nations of the world so interdependent that there is no longer any such thing as foreign.

单选题The author implies that which of the following is the type of scientific explanation most likely used by a molecular biologist?

单选题In the American family, the husband and wife usually share important decision making. When the children are old enough, they take part ______. A. also B. though C. as well D. either

单选题My suggestion is that the experiment______in another way.

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单选题The cognitive approach to literature does not include______

单选题The problems themselves are still not truly strategic because the operation of the global environment is not affected and the survival of civilization is not at stake.

单选题The racial theory of civilization has ceased to be scientifically respectable. Today we only know it as a sophistical excuse for national pride and national hatred. The idea that there is a European race whose peculiar virtue render it fit to dominate the rest of the world, or an English race whose innate qualities make imperialism a duty, or a Nordic race whose predominance in America is the necessary condition of American greatness, and whose purity in Germany is indispensable to the purity of German culture, we know is scientifically baseless and politically disastrous. We know that physical anthropology and cultural anthropology are different studies, and we find it difficult to see how any one have confused them. Consequently we are not inclined to be grateful to Herder for having started so pernicious a doctrine. It would be possible to defend him by arguing that his theory of racial differences does not in itself give any ground for believing in the superiority of one race over another. One might argue that it only implies each type of man to have its own form of life, its own conception of happiness, and its own rhythm of historical development. On this showing, the social institutions and political forms of different peoples can differ without being intrinsically better or worse than one another, and the goodness of a certain political form is never an absolute goodness by only a goodness relative to the people that has created it. But this would not be a legitimate interpretation of Herder's thought. It is essential to his whole point of view that the differences between the social and political institutions of different races are derived not from the historical experience of each race but from its innate psychological peculiarities, and this is fatal to a true understanding of history. The differentiations between different cultures which can be explained on these lines are not historical differentiations, like that between, say, Renaissance and Medieval cultures, but non-historical differentiations like that between a community of bees and a community of ants. Human nature has been divided up, but it is still human nature, still nature and not mind)and in terms of practical politics this means that the task of creating or improving a culture is assimilated to that of creating or improving a breed of domestic animals. Once Herder's theory of race is accepted, there is no escaping the Nazi marriage laws. The problem which Herder bequeathed to his successors, therefore, was the problem of thinking out clearly the distinction between nature and man: nature as a process or sum of processes governed by laws which are blindly obeyed, man as a process or sum of processes governed(as Kant was to put it)not by law simply but by consciousness of law. It had to be shown that history is a process of this second type: that is to say, the life of man is an historical life because it is a mental and spiritual life. Herder's first volume was published in the spring of 1784 when he was forty. Kant's pupil had evidently read the book as soon as it appeared. Although Kant dissented from many of its doctrines, as his somewhat acid review was to show a year later, it did stimulate him to think for himself about the problems it raised and to write an essay of his own which constitutes his chief work on the philosophy of history. Kant was already sixty when he read the first part of the Ideen, and his mind had been formed by the Enlightenment as it took root in Germany under the aegis of Frederick the Great and of Voltaire, whom Frederick brought to the Prussian court. Hence Kant represents, as compared with Herder, a certain astringent tendency towards anti-Romanticism. In the true style of the Enlightenment, he regards past history as a spectacle of human irrationality and looks forward to a Utopia of rational life. What is really remarkable in him is the way in which he combines the Enlightenment point of view with the Romanticist, very much as in his theory of knowledge he combines rationalism and empiricism.

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, ears, planes and on boats; on floors and beds; and in libraries, offices and museums.

单选题This job ______, who are more careful.

单选题The author implies

单选题Users tend to buy a computer that Uconforms/U to the manufacturer's advertising claims.

单选题The kids are hanging out. I pass small bands of students, in my way to work these mornings. They have become a familiar part of the summer landscape. These kids are not old enough for jobs. Nor are they rich enough for camp. They are school children without school. The calendar called the school year ran out on them a few weeks ago. Once supervised by teachers and principals, they now appear to be in "self care". Passing them is like passing through a time zone. For much of history, after all, Americans arranged the school year around the needs of work and family. In 19th-century cities, schools were open seven or eight hours a day, 11 months a year. In rural America, the year was arranged around the growing season. Now, only 3 percent of families follow the agricultural model, but nearly all schools are scheduled as if our children went home early to milk the cows and took months off to work the crops. Now, three-quarters of the mothers of school-age children work, but the calendar is written as if they were home waiting for the school bus. The six-hour day, the 180-day school year is regarded as something holy. But when parents work an eight-hour day and a 240-day year, it means something different. It means that many kids go home to empty houses. It means that, in the summer, they hang out. "We have a huge mismatch between the school calendar and the realities of family life," says Dr. Ernest Boyer, head of the Carnegie Foundation for the Advancement of Teaching." Dr. Boyer is one of many who believe that a radical revision of the school calendar is inevitable. "School, whether we like it or not, is educational. It always has been. " His is not a popular idea. Schools are routinely burdened with the job of solving all our social problems. Can they be asked to meet the needs of our work and family lives? It may be easier to promote a longer school year on its educational merits and, indeed, the educational case is compelling. Despite the complaints and studies about our kids' lack of learning, the United States still has a shorter school year than any industrial nation. In most of Europe, the school year is 220 days. In Japan, it is 240 days long. While classroom time alone doesn't produce a well-educated child, learning takes time and more learning takes more time. The long summers of forgetting take a toll. The opposition to a longer school year comes from families that want to and can provide other experiences for their children. It comes from teachers. It comes from tradition. And surely from kids. But the most important part of the conflict has been over the money.

单选题Woman: I'm going to ask the neighbors to turn the music down. I can't hear myself think. Man: Do you really think it makes any difference to them? Question: What does the man imply? A. She should move to another place. B. The neighbors probably won't turn down the music. C. He wants to listen to different music. D. He doesn't think the music is particularly loud.