单选题Wearing a seat belt in a vehicle ______.

单选题Standing on the rim of the Grand Canyon, gazing across this giant wound in the Earth's surface, a visitor might assume that the canyon had been caused by some ancient convulsion. In fact, the events that produced the canyon, far from being sudden and cataclysmic, simply add up to the slow and orderly process of erosion. Many millions of years ago the Colorado Plateau in the Grand Canyon area contained 10,000 more feet of rock than it does today and was relatively level. The additional material consisted of some 14 layered formations of rock. In the Grand Canyon-region these layers were largely worn away over the course of millions of years. Approximately 65 million years ago the plateau's flat surface in the Grand Canyon area bulged upward from internal pressure; geologists refer to this bulging action as upwarping; it was followed by a general elevation of the whole Colorado Plateau, a process that is still going on. As the plateau gradually rose, shallow rivers that meandered across it began to run more swiftly and cut more definite courses. One of these rivers, located east of the upwarp, was the ancestor of the Colorado. Another river system, called the Hualapai, flowing west of the upwarp, extended itself eastward by cutting back into the upwarp; it eventually connected with the ancient Colorado and captured its waters. The new river then began to carve out the 277-mile-long trench that eventually became the Grand Canyon. Geologists estimate that this initial cutting action began no earlier than 10 million years ago. Since then, the canyon forming has been cumulative. To the corrosive force of the river itself have been added other factors. Heat and cold, rain and snow, along with the varying resistance of the rocks, increase the opportunities for erosion. The canyon walls crumble; the river acquires a cutting tool, tons of debris; rainfall running off the high plateau creates feeder streams that carve side canyons. Pushing slowly backward into the plateau, the side canyons expose new rocks, and the pat- tern of erosion continues.

单选题 Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank on ANSWER SHEET 1. Ira Carlin, worldwide media director of the worlds {{U}}(21) {{/U}} advertising agency, McCann Erickson is quite candid about using fear to sell his message about the communications revolution. One prediction shows that 55 percent of advertising by volume will be carried on the Internet {{U}}(22) {{/U}} 2005. Consumers will have control and choice of communication; they will also have control over {{U}}(23) {{/U}} advertisements they watch, and how. "But that will only {{U}}(24) {{/U}} to the information enabled", says Carlin. "There'll be an upstairs-downstairs schism... The widening {{U}}(25) {{/U}} between the information enabled and information disenabled is going to be a greater social problem {{U}}(26) {{/U}} any seeming social problem we've ever had in the past, {{U}}(27) {{/U}} racial and {{U}}(28) {{/U}} problems." Look at what is already happening, Carlin says. {{U}}(29) {{/U}} in Manhattan, he can choose the way he receives his daily news. He can open his front door and pick up his own personal copy of the New York Times. He can {{U}}(30) {{/U}} the radio station of the New York Times, and listen to the same news. "Or I can simply click into {{U}}www. newyorktimes. com{{/U}} on the Internet and get the print {{U}}(31) {{/U}}; or hear the audio files or see the video {{U}}(32) {{/U}} the New York Times stringers have supplied, through my computer. It's the same news, but I choose the media modality." The revolution goes {{U}}(33) {{/U}}. Carlin's computer can currently stream videos to him at 22 frames per second, {{U}}(34) {{/U}} the picture big enough to occupy one-quarter to one third of the monitor screen. "Six months from now, I guarantee it, I will be able to {{U}}(35) {{/U}} a full-screen video at 30 frames per second. That means I'll be watching television, but I'll be getting it {{U}}(36) {{/U}} a telephone connection." McCann Detroit, says Carlin, {{U}}(37) {{/U}} the world's first video ad, in early 1997, on {{U}}Pointcast. com{{/U}} is a free news and information service, "fully {{U}}(38) {{/U}} by advertising". It was {{U}}(39) {{/U}} in early 1996 and has 2.1 million subscribers in the U.S.. {{U}}Pointcast. com{{/U}} uses a special software program to work out {{U}}(40) {{/U}} ads a person might be interested in, by monitoring their selection of news and information on the Net. "I do a lot of technology and marketing work," says Carlin. "Because of that, the computer program thinks I'm rich. It sends me stockbroker ads and technology ads."

单选题Questions 11-13 are based on the following talk about the Space Shuttle Columbia. You now have 15 seconds to read Questions 11-13.

单选题 {{I}}Questions 14-16 are based on the following passage. You now have 15 seconds to read questions 14-16.{{/I}}

单选题America, unhappily, is bullish on garbage. Our production of refuse, now about 160 million tons a year, will rise to 193 million tons by the end of the century (21) nothing is done. This growing effluence of affluence, 3.5 pounds a day for every American, is a (22) of our consumer society, (23) watchwords are "convenience", "ready to use" and "throw away". And it has become a major national environmental issue. forcing citizens, (24) officials and private companies to (25) serious thought to rubbish. The contentious reality is that the (26) cheap and simple solution to trashdumping it in a landfill just beyond the edge of town (27) no longer workable, particularly around major cities. Old dumps, which now get 8% of all garbage, are filling up, end new (28) have become virtually (29) to build with the result of skyrocketing land costs, (30) stringent environmental regulations and shrill public opposition (31) new landfills "in my backyard". "Five years from now," (32) Bruce Waddle. director of the Environmental Protection Agency's municipal-solid-waste program, "we'll have only half the number of landfills operating." With this grim prospect, new methods are required, all variations on the only four ways available to deal (33) garbage: bury it, burn it, recycle it or don't make as (34) in the first place. What's needed, experts say, is sophisticated (35) fallout, called "integrated waste management" An (36) valuable items are sorted out of the waste stream and turned (37) new products, and the rest are burned cleanly in a furnace that also produces steam to (38) electricity. Only the ash, (39) of the original volume of trash, is then disposed (40) in carefully engineered landfills.

单选题The main point of the article is that

单选题The island of Lilliput can be found in ______. A. Robinson Crusoe B. Gulliver's Travels C. Adventures of Tome Sawyer D. Adventures of Huckleberry Finn

单选题Moviegoers may think history is repeating itself this weekend. The summer's most anticipated film, Pearl Harbor, which has opened recently, painstakingly recreates the Japanese attack that drew the United States into World War II. But that isn't the film's only reminder of the past. Harbor invites comparison to Titanic, the biggest hit of ail time. Like Titanic, Harbor heaps romance and action around a major historical event. Like Titanic, Harbor attempts to create popular global entertainment from a deadly real life. Like Titanic, Harbor costs a pretty penny and hopes to get in even more at the box office. Both Titanic and Pearl Harbor unseal their tales of love and tragedy over more than three hours. Both stories center on young passion, triangles of tension with one woman and two men: In Titanic, Leonardo DiCaprio and Billy Zane compete for the love of the same woman, a high society type played by a British actress named Kate (Winslet). In Harbor, two pilots (Ben Affelck, Josh Hartnett) fall for the same woman, a nurse played by a British actress named Kate (Beckinsale). The scenes of peril also have similarities. Harbor has a shot in which soldiers cling for dear life as the battleship USS Oklahoma capsizes. The moment is recalled of the Titanic's climactic sinking scene in which DiCaprio and Winslet hang from the ocean liner as half of the ship vertically plunges into the water. In Harbor, one of its stars floats atop a piece of debris in the middle of the night, much like Winslet's character does in Titanic. And the jaw dropping action of Titanic is matched by Harbor's 40 minute recreation of Dec. 7,1941 attack on the United States' Pacific Fleet. Both films spent heavily on special effects. Harbor director, Michael Bay, for example, says.he kept salaries down so more could be spent on the visuals. Both movies shot their ship sinking scenes at the same location: Fox Studios Baja in Mexico. Harbor's makers have even taken a Titanic-like approach to the soundtrack. The film includes one song, There You'll Be, performed by country music superstar Faith Hill. Titanic, which is one of the best selling soundtracks of all time, also had only one pop song: Celine Dion's My Heart Will Go On. "If Harbor becomes a major moneymaker, filmmakers may comb history books searching for even more historical romance action material," says a critic.

单选题[此试题无题干]

单选题It"s plain common sense—the more happiness you feel, the less unhappiness you experience. It"s plain common sense, but it"s not true. Recent research reveals that happiness and unhappiness are not really two sides of the same emotion. They are two distinct feelings that, coexisting, rise and fall independently. People might think that the higher a person"s level of unhappiness, the lower their level of happiness and vice versa. But when researchers measure people"s average levels of happiness and unhappiness, they often find little relationship between the two. The recognition that feelings of happiness and unhappiness can coexist much like love and hate in a close relationship may offer valuable clues on how to lead a happier life. It suggests, for example, that changing or avoiding things that make you miserable may well make you less miserable, but probably won"t make you any happier. That advice is backed up by an extraordinary series of studies which indicate that a genetic predisposition for unhappiness may run in certain families. On the other hand, researchers have found happiness doesn"t appear to be anyone"s heritage. The capacity for joy is a talent you develop largely for yourself. Psychologists have settled on a working definition of the feeling—happiness is a sense of subjective well-being. They have also begun to find out who"s happy, who isn"t and why. To date, the research hasn"t found a simple formula for a happy life, but it has discovered some of the actions and attitudes that seem to bring people closer to that most desired of feelings. Why is unhappiness less influenced by environment? When we are happy, we are more responsive to people and keep up connections better than when we are feeling sad. This doesn"t mean, however, that some people are born to be sad and that"s that. Genes may predispose one to unhappiness, but disposition can be influenced by personal choice. You can increase your happiness through your own actions.

单选题With a new Congress drawing near, Democrats and Republicans are busily designing competing economic stimulus packages. The Republicans are sure to offer tax cuts, the Democrats -- among other things -- financial relief for the states. There is one measure, however, that would provide not only an immediate boost to the economy but also immediate relief to those most in need: a carefully crafted extension of the federal unemployment insurance program. The Senate approved such an extension before it adjourned" in November. The House of Representatives refused to go along. It was among the greatest failures of the 107th Congress. One consequence is that jobless benefits for an estimated 780,000 Americans will abruptly stop tomorrow, even though most recipients have not yet exhausted their benefits. President Bush failed to show any leadership on this matter during the November Congress. Later, he finally asked Congress to extend the program for these workers and to make the benefits effective from Dec. 28. That's not enough. The way unemployment insurance typically works is that states provide laid-off workers with 26 weeks of benefits, followed by 13 weeks of federal aid. Under Mr. Bush's scheme, federal benefits would be extended only for those who were already receiving them on Dec.28. The extension would not cover the jobless workers who will exhaust their regular state-funded benefits after Dec. 28 -- an estimated 95,000 every week -- but will receive no federal help unless the program is re-authorized. By the end of March, 1.2 million workers could fall into this category. The Senate saw this problem coming, and under the leadership of Hillary Rodham Clinton for New York and Don Nickles of Oklahoma, passed a bill that would not only have covered people already enrolled in the federal program but provided 13 weeks of assistance for those losing their state benefits in the new year. The House, for largely trivial reasons, refused to go along. Bill Frist, the new Senate majority leader, says he is looking for ways to put a kinder, gentler face on the Republican Party. Passing the Clinton-Nickles bill would be a good way to begin. The House should then follow suit. One of the House's complaints last year was that, at $ 5 billion, the Clinton-Nickles bill was too expensive. That's ridiculous, considering the costs of the tax cuts that House Republicans have in mind. The unemployment rate last month stood at 6 percent, the highest since mid-1994. The country could use a $ 5 billion shot in the arm right about now. So could a lot of increasingly desperate people.

单选题Which is not the characteristic of distance learning?

单选题The local people sometimes kill tourists when______.