单选题The study of language at one point in time is a______study.

单选题Some companies might not let you rent a car _____ you have a credit card .

单选题(Unlike) Americans who seem (to prefer) coffee, the English (drinks) (a great deal) of tea. A. Unlike B. to prefer C. drinks D. a great deal

单选题Even though strong evidence has proved the nicotine to be ________, the tobacco company still insists that its products are harmless.

单选题Man: Hi, Janet, I hear you've just returned from a tour of Australia．Did you get a chance to visit the Sydney Opera House? Woman: of course I did．It would be a shame for anyone visiting Australia not to see this unique creation in architecture. Its magnificent beauty is simply beyond description. Question: What do we learn from this conversation?

单选题This ticket ______ you to a free meal in our new restaurant.A. givesB. grantsC. entitles(授权)D. credits.

单选题There are about 70 people ______ in the accident.

单选题What can we say about the new global satellite communications systems?

单选题It displeases my parents when Richard and I stay out late every night. My parents don't approve______.

单选题Healthgrades. com claimed that it shouldn't be sued in Washington because______.

单选题Wherever there is matter, there is energy; all changes of matter______changes in the form of the energy.

单选题We can learn from the first three paragraphs that______.

单选题The newspaper did not mention the ______ of the damage Caused by the fire. A. range B. level C. extent D. quantity

单选题Speaker A: I hear there is a good Japanese restaurant nearby. Would you like to go there for lunch?Speaker B: ______

单选题Indeed, almost every scientist now finds it impossible to read all the works relevant to his own subject, ______ extensively outside of it. A. much more to read B. much less to read C. still more reading D. much less reading

单选题Forget what Virginia Woolf said about What a writer needs-a room of one's own. The writer she had in mind wasn't at work on a novel in cyberspace, one with multiple hypertexts, animated graphics and downloads of trancey, chiming music. For that you also need graphic interfaces, ReslPlayer and maybe even a computer laboratory at Brown University. That was where Mark Amerika—his legally adopted name; don't ask him about his birth name-composed much of his novel Grammatron. But Grammatron isn't just a story. It's an online narrative (grammatron. com) that uses the capabilities of cyberspace to tie the conventional story line into complicated knots. In the four years it took to produce—it was completed in 1997—each new advance in computer software became another potential story device. "I became sort of dependent on the industry", jokes Amerika, who is also the author of two novels printed on paper." That's unusual for a writer, because if you just write on paper the" technology is pretty stable." Nothing about Grammatron is stable. At its center, if there is one, is Abe Golam, the inventor of Nanoscript, a quasi-mystical computer code that some unmystical corporations are itching to acquire. For much of the story, Abe wanders through Prague-23, a virtual "city" in cyberspace where visitors indulge in fantasy encounters and virtual sex, which can get fairly graphic. The reader wanders too, because most of Grammatron's 1,000-plus text screens contain several passages in hypertext. To reach the next screen, just double-click. But each of those hypertexts is a trapdoor that can plunge you down a different pathway of the story. Choose one and you drop into a corporate- strategy memo, Choose another and there's a XXX- rated sexual rant. The story you read is in some sense the story you make. Amerika teaches digital art at the University of Colorado, where his students develop works that straddle the lines between art, film and literature. "I tell them not to get caught up in mere plot," he says. Some avant-garde writers—Julio Cortazar, Italo Calvino-have also experimented with novels that wander out of their author's control. "But what makes the Net so exciting," says Amerika, "is that you can add sound, randomly generated links, 3-D modeling, animation." That room of one's own is turning into a fun house.

单选题Although Venus is the nearest planet of the Earth, little is known about it because it is ______ covered by thick clouds.

单选题{{B}}16-20{{/B}} President Coolidge's statement, "The business of America is business," still points to an important truth today-- that business institutions have more prestige (威望) in American society than any other kind of organization, including the government. Why do business institutions possess this great prestige? One reason is that Americans view business as being more firmly based on the ideal of competition than other institutions in society. Since competition is seen as the major source of progress and prosperity by most Americans, competitive business institutions are respected. Competition is not only good in itself, it is the means by which other basic American values such as individual freedom, equality of opportunity, and hard work are protected. Competition protects the freedom of the individual by ensuring that there is no monopoly (垄断) of power. In contrast to one, all-powerful government, many businesses compete against each other for profits. Theoretically, if one business tries to take unfair advantage of its customers, it will lose to competing business which treats its customers more fairly. Where many businesses compete for the customers' dollar, they cannot afford to treat them like inferiors or slaves. A contrast is often made between business, which is competitive, and government, which is a monopoly. Because business is competitive, many Americans believe that it is more supportive of freedom than government, even though government leaders are elected by the people and business leaders are not. Many Americans believe, then, that competition is as important, or even more important, than democracy in preserving freedom. Competition in business is also believed to strengthen the ideal of equality of opportunity. Competition is seen as an open and fair race where success goes to the swiftest person regardless of his or her social class background. Competitive success is commonly seen as the American alternative to social rank based on family background. Business is therefore viewed as an expression of the idea of equality of opportunity rather than the aristocratic (贵族的) idea of inherited privilege.

单选题In the absence of optimism, we are left with nothing but critics, naysayers, and prophets of doom. When a nation expects the worst from its people and institutions, and its experts focus exclusively on faults, hope dies. Too many people spend too much tie looking down rather than up, finding fault with their country's political institutions, economic system, educational establishment, religious organizations, and—worst of all—with each other. Faultfinding expends so much negative energy that nothing is left over for positive action. It takes courage and strength to solve the genuine problems that afflict every society. Sure, there well always be things that need fixing. But the question is, do you want to spend your time and energy tearing things down or building them up? The staging of a Broadway show could illustrate my point. Let's say a new production is about to open. A playwright has polished the script, investor have put up the money, and the theater has been rented. A director has been chosen, actors have been auditioned and selected, and the cast has been rehearsing for weeks. Set, lighting, and sound engineers have been hard at work. By the time opening night arrives, nearly a hundred people have labored tirelessly—all working long hours to make magic for their audience. On opening night, four or five critics sit in the audience. If they pan it, the play will probably close in a matter of days or weeks. If they praise it, the production could go on for a long and successful run. In the end, success or failure might hinge on the opinion of a single person—someone who might be in a bad mood on opening night! What's wrong with this scene? In one sense, nothing. Critics have a legitimate role. The problem arises when we make critics our heroes or put them in control of our fate. When we empower the critic more than the playwright, something is wrong. It is much easier to criticize than to create. When we revere the critics of society, we eventually become a society of critics, and when that happens, there is no room left for constructive optimism.