单选题The comparison between distance education and traditional face-to-face education indicates that ______. A．traditional education has been out of date B．distance education has more advantages than traditional education C．distance education can be as effective as traditional education D．distance education has replaced traditional education

单选题During the first year that Mr. Wordsworth and I were neighbours, our conversations turned frequently on the two cardinal points of poetry, the power of exciting the sympathy of the reader by a faithful adherence to the truth of nature, and the power of giving the interest of novelty by the modifying colours of imagination. The sudden charm, which accidents of light and shade, which moon-light or sunset diffused over a known and familiar landscape, appeared to represent the practicability of combining both. These are the poetry of nature. The thought suggested itself--(to which of us I do not recollect)--that a series of poems might be composed of two sorts. In the one, the incidents and agents were to he, in part at least, supernatural. And the excellence aimed at was to consist in the interesting of the affections by the dramatic truth of such emotions, as would naturally accompany such situations, supposing them real. And real in this sense they have been to every human being who, from whatever source of delusion, has at any time believed himself under supernatural agency. For the second class, subjects were to be chosen from ordinary life. The characters and incidents were lo be such as will be found in every village and its vicinity, where there is a meditative and feeling mind to seek after them, or to notice them, when they present themselves. In this idea originated the plan of the Lyrical Ballads, in which it was agreed, that my endeavors should be directed to persons and characters supernatural, or at least romantic. Yet so as to transfer from our inward nature a human interest and a semblance of truth sufficient to procure for these shadows of imagination that willing suspension of disbelief for the moment, which constitutes poetic faith. Mr. Wordsworth, on the other hand, was to propose to himself as his object, to give the charm of novelty to things of every day, and to excite a feeling analogous to the supernatural, by awakening the mind's attention to the. lethargy of custom, and directing it to the loveliness and the wonders of the world before us. And inexhaustible treasure, but for which, in consequence of the film of familiarity and selfish solicitude, we have eyes, yet see not, ears that hear not, and hearts that neither feel nor understand.

单选题It can be learned from the text that soon after the Second World War

单选题It is difficult to {{U}}discern{{/U}} the sample that is on the slide unless the microscope is adjusted.

单选题The study of the relationship between productivity and living standards is significant in that ______.

单选题{{B}}Passage 2{{/B}} To get from Kathmandu to the tiny village in Nepal, Dave Irvine-Halliday spent more than two days. When he arrived, he found villagers working and reading around battery-powered lamps equipped with light-emitting diodes, or LEDs--the same lamps he had left there in 2000. Irvine-Halliday, an American photonics engineer, was not surprised. He chose to use LED bulbs because they are rugged, portable, long-lived, and, extremely efficient. Each of his lamps produces a useful amount of illumination from just one watt of power. Villagers use them about four hours each night, then top off the battery by pedaling a generator for half an hour. The cool, steady beam is a huge improvement over lamps still common in developing countries. In fact, LEDs have big advantages over familiar incandescent (白炽的) lights as well--so much so that Irvine-Halliday expects LEDs will eventually take over from Thomas Edison's old lightbulb as the world's main source of artificial illumination. The dawn of LEDs began about 40 years ago, but early LEDs produced red or green glows suitable mainly for displays in digital clocks and calculators. A decade ago, engineers invented a semiconductor crystal made of an aluminum compound that produced a much brighter red light. Around the same time, a Japanese engineer developed the first practical blue LED. This small advance had a huge impact because blue, green, and red LEDs can be combined to create most of the colors of the rainbow, just as that in a color television picture. These days, high-intensity color LEDs are showing up everywhere such as the traffic lights. The reasons for the rapid switchover are simple. Incandescent bulbs have to be replaced annually, but LED traffic lights should last five to yen years. LEDs also use 80 to 90 percent less electricity than the conventional signals they replace. Collectively, the new traffic lights save at least 400 million kilowatt-hours a year in the United States. Much bigger savings await if LEDs can supplant Mr. Edison's bulb at the office and in the living room. Creating a white-light LED that is energy-saving, cheap and appealing has proved a tough engineering challenge. But all the major lightbulb makers--including General Electric, Philips, and Osram-Sylvania--are teaming up with semiconductor manufacturers to make it happen.

单选题Also of concern was the fact that many consumers lacked sufficient information and awareness to protect themselves in the marketplace and to make knowledgeable buying choices.

单选题 When it comes to the slowing economy, Ellen Spero isn't biting her nails just yet. But the 47-year-old manicurist isn't cutting, filling or polishing as many nails as she'd like to, either. Most of her clients spend $12 to $50 weekly, hut last month two longtime customers suddenly stopped showing up. Spero blames the softening economy. "I'm a good economic indicator," she says. "I provide a service that people can do without when they're concerned about saving some dollars. " So Spero is downscaling, shopping at middle-brow Dillard's department store near her suburban Cleveland home, instead of Neiman Marcus. "I don't know if other clients are going to abandon me, too" , she says. Even before Alan Greenspan's admission that America's red-hot economy is cooling, lots of working folks had already seen signs of the slowdown themselves. From car dealerships to Gap outlets, sales have been lagging for months as shoppers temper their spending. For retailers, who last year took in 24 percent of their revenue between Thanksgiving and Christmas, the cautious approach is coming at a crucial time. Already, experts say, holiday sales are off 7 percent from last year's pace. But don't sound any alarms just yet. Consumers seem only concerned, not panicked, and many say they remain optimistic about the economy's long-term prospects, even as they do some modest belt-tightening. Consumers say they're not in despair because, despite the dreadful headlines, their own fortunes still feel pretty good. Home prices are holding steady in most regions. In Manhattan, "there's a new gold rush happening in the $4 million to $10 million range, predominantly fed by Wall Street bonuses, " says broker Barbara Corcoran. In San Francisco, prices are still rising even as frenzied overbidding quiets. "Instead of 20 to 30 offers, now maybe you only get two or three," says john Deadly, a Bay Area real-estate broker. And most folks still feel pretty comfortable about their ability to find and keep a job. Many folks see silver linings to this slowdown. Potential home buyers would cheer for lower interest rates. Employers wouldn't mind a little fewer bubbles in the job market. Many consumers seem to have been influenced by stock-market swings, which investors now view as a necessary ingredient to a sustained boom. Diners might see an upside, too. Getting a table at Manhattan's hot new Alain Ducasse restaurant need to be impossible. Not anymore. For that, Greenspan & Co. may still be worth toasting.

单选题Rebecca ______ home, for I saw her just now at the canteen. A. mustn't have gone B. shouldn't have gone C. can't have gone D. couldn't have gone

单选题The cost of the reconstruction would______from 2. 5 to 3 million pounds.

单选题The tower of Pisa has been leaning so long—nearly 840 years—that it"s natural to assume it will 1 gravity forever. But the famous structure has been in danger of collapsing almost since its first brick was 2 . It began leaning shortly after construction began in 1173. Builders had only reached the third of the tower"s 3 eight stories when its foundation began to settle unevenly on soft soil composed 4 mud, sand and clay. As a result, the structure leaned 5 to the north. Laborers tried to 6 it by making the columns and arches of the third story on the sinking northern side slightly taller. Then political unrest halted construction. The tower sat 7 for nearly 100 years, but it wasn"t done moving. By the time work restarted in 1272, the tower tilted to the south—the 8 it still leans today. Engineers tried to make another 9 , only to have their work interrupted once again in 1278 with just seven stories completed. Unfortunately, the building continued to settle, sometimes at an 10 rate. Finally, between 1360 and 1370, workers finished the project, once again trying to correct the lean 11 angling the eighth story, with its bell room, northward. In 1989, a similarly constructed bell tower in Pavia, Italy, collapsed suddenly. Officials became 12 worried the tower of Pisa would suffer a similar fate that they closed the monument to the 13 . A year later, they rallied together an international team to see 14 the tower could be brought back from the brink. By 2001, the team had decreased the tower"s lean by 44 centimeters, enough to make officials 15 that they could reopen the monument. The actions taken by Burland and his team could, 16 , stabilize the structure forever. The real threat now comes from the masonry itself, especially the material in the 17 stories, where most of the forces caused by the centuries-long leaning have been directed. If any of this masonry crush, the tower could collapse. And even a 18 earthquake in the region could have devastating consequences. After 200 years, another intervention may be required, but the 19 available to make improvements could be far more advanced and 20 the tower for another 800 years.

单选题The scandal at the zoo was exposed by disgruntled staff on March 10 when they went on strike over unpaid wages. According to the staff, this was not the first time that the zoo has been mired in scandal.

单选题Which of the following can be best described as"voiceless alveolar fricative"?

单选题The advancement of science and technology has demonstrated that a fact appearing to contradict to certain theory may actually be ______ a more advanced formulation of that theory.

单选题 After their 20-year-old son hanged himself during his winter break from the University of Arizona five years ago, Donna and Phil Satow wondered what signs they had overlooked, and started asking other students for answers. What grew from this soul searching was Ulifeline (www. ulifeline, org), a website where students can get answers to questions about depression by logging on through their universities. The site has been adopted as a resource by over 120 colleges, which can customize it with local information, and over 1.3 million students have logged on with their college ID's. "It's a very, solid website that raises awareness of suicide, de-stigmatizes mental illness and encourages people to seek the help they need," said Paul Grayson, the director of counseling services at New York University, which started using the service nearly a year ago. The main component of the website is the Self-E-Valuator, a self-screening program developed by Duke University Medical Center that tests students to determine whether they areat risk for depression, suicide and disorders like anorexia and drug dependence. Besides helping students, the service compiles anonymous student data, offering administrators an important window onto the mental health of its campus. The site provides university users with links to local mental health services, a catalog of information on prescription drugs and side effects, and access to Go Ask Alice, a vast archive developed by Columbia University with hundreds of responses to anonymously posted inquiries from college students worldwide. For students concerned about their friends, there is a section that describes warning signs for suicidal behavior and depression. Yet it is hard to determine how effective the service is. The anonymity of the online service can even play out as a negative. "There is no substitute for personal interaction(个人互动才能解决)", said Dr. Lanny Berman, executive director of the American Association of Suicidology, based in Washington. Ulifeline would be the first to say that its service is no replacement for an actual therapist. "The purpose is to find out if there are signs of depression and then direct people to the right places," said Ron Gibori, executive director of Ulifeline. Mrs. Satow, who is still involved with Ulifeline, called it "a knowledge base" that might have prevented the death of her son, Jed. "If Jed's friends had known the signs of depression, they might have seen something," she said.

单选题Influenced by his teacher, he decided to take politics as his ______.

单选题He ______ taking part in a plot to free the prisoner.