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

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

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

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

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

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

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

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.

单选题{{B}}Text 3{{/B}} Success, it is often said, has many fathers--and one of the many fathers of computing, that most successful of industries, was Charles Babbage, a 19th-century British mathematician. Exasperated by errors in the mathematical tables that were widely used as calculation aids at the time, Babbage dreamed of building a mechanical engine that could produce flawless tables automatically. But his attempts to make such a machine in the 1920s failed, and the significance of his work was only rediscovered this century. Next year, at last, the first set of printed tables should emerge from a calculating "difference engine" built to Babbage's design. Babbage will have been vindicated. But the realization of his dream will also underscore the extent to which he was a man born ahead of his time. The effort to prove that Babbage's designs were logically and practically sound began in 1985, when a team of researchers at the Science Museum in London set out to build a difference engine in time for the 200th anniversary of Babbage's birth in 1992. The team, led by the museum's curator of computing, Doron Swade, constructed a monstrous device of bronze, iron and steel. It was 11 feet long, seven feet tall, weighed three tons, cost around $500 000 and took a year to piece together. And it worked perfectly, cranking out successive values of seventh-order polynomial equations to :31 significant figures. But it was incomplete. To save money, an entire section of the machine, the printer, was omitted. To Babbage, the printer was a vital part of design. Even if the engine produced the correct answers, there was still the risk that a transcription or typesetting error would result in the finished mathematical tables being inaccurate. The only way to guarantee error-free tables was to automate the printing process as well. So his plans included specifications for a printer almost as complicated as the calculating engine itself, with adjustable margins, two separate fonts, and the ability to print in two, three or four columns. In January, after years of searching for a sponsor for the printer, the Science Museum announced that a backer had been found. Nathan Myhrvold, the chief technology officer at Microsoft, agreed to pay for its construction (which is expected to cost $373 000 with one Proviso: that the Science Museum team would build him an identical calculating engine and printer to decorate his new home on Lake Washington, near Seattle). Construction of the printer will begin--in full view of the public--at the Science Museum later this month. The full machine will be completed next year. It is a nice irony that Babbage's plans should be realized only thanks to an infusion of cash from a man who got rich in the computer revolution that Babbage helped to foment. More striking still, even using 20th-century manufacturing technology the engine will have cost over $830 000 to build. Allowing for inflation, this is roughly a third of what it might have cost to build in Babbage's day-in contrast to the cost of electronic-computer technology, which halves in price every 18 months. That suggests that, even had Babbage succeeded, a Victorian computer revolution based on mechanical technology would not necessarily have followed.

单选题{{B}}Directions:{{/B}}Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. The fact that blind people can "see" things using other parts of their bodies apart from their eyes may help us to understand our feelings about color. If they can{{U}} (1) {{/U}}color differences, then perhaps we, too, are affected by{{U}} (2) {{/U}}unconsciously. Manufacturers have discovered by{{U}} (3) {{/U}}that sugar sells badly in green wrappings,{{U}} (4) {{/U}}blue foods are considered unpleasant, and the cosmetics should never be packaged{{U}} (5) {{/U}}brown. These discoveries have grown{{U}} (6) {{/U}}a whole discipline of color psychology that now finds{{U}} (7) {{/U}}in everything from fashion to interior decoration. Some of our{{U}} (8) {{/U}}are clearly psychological. Dark blue is the color of the night sky and{{U}} (9) {{/U}}associated with passivity and calm, while yellow is a day color with{{U}} (10) {{/U}}of energy and incentive. For primitive man, activity during the day{{U}} (11) {{/U}}hunting and attacking, while he soon saw as red, the color of blood and rage and the heat that came{{U}} (12) {{/U}}effort. And green is associated with passive{{U}} (13) {{/U}}and self preservation. Experiments have{{U}} (14) {{/U}}that green, partly bemuse of its physiological associations, also has a direct psychological{{U}} (15) {{/U}}, it is a calming color.{{U}} (16) {{/U}}its exciting connotations, red was chosen as the signal for changer,{{U}} (17) {{/U}}closer analysis shows that a vivid yellow can produce a{{U}} (18) {{/U}}basic state of alertness and (19) , so fire engines and ambulances in some advanced communities are now{{U}} (20) {{/U}}around in bright yellow colors that stop the traffic dead.

单选题Judging from the context, what does the word "them" (Line 4, Paragraph 4) refer to?

单选题Your eye is a window on the nerves and blood vessels, revealing vital information about your entire body. An (1) exam starts from the outside and works in. First the ophthalmologist (眼科医生) gauges (2) with the familiar wall chart and checks visual field by moving objects in and out of (3) . A limited visual field could be the (4) of the high inner eye pressure of glaucoma(青光眼)or (5) a tumor pressing on nerves leading from the eye. The physician also checks for infection around the lashes and notes how fast the lids follow the eyes downward. Lid lag sometimes (6) thyroid disease (甲状腺疾病). If one pupil contracts (7) the other doesn't, the physician is (8) to the fact that (9) a tumor or stroke, perhaps, has damaged the nerves between the eye and brain. A tumor as far away (10) the lung can cause capillary problems by hitting a nerve that loops through the neck. The white of the eye, tear ducts, lens and retina (视网膜) are checked for (11) of trouble. Too many white blood cells (12) inflammation, blood means tissue has tom or a vessel has burst, and deposits of (13) material can mean eye disease. The orange-red retina holds many more (14) for disease detection. High blood pressure may announce its (15) by pushing the vessels off track at their intersections. (16) vessel growth is a sign of diabetic retinopathy (糖尿病性视网膜病). Narrowed vessels may indicate (17) of the arteries, and damage to tiny capillaries could be a sign of early diabetes. The doctor even examines the pin-head-size hole in the back of the optic nerve on their way to the brain. (18) the appearance of these nerve fibers is abnormal, nerve tissue may have been damaged because of intraocular pressure, indicating glaucoma or the presence of a tumor. When a physician needs quick, (19) information about the body, the eyes have (20) .