单选题To what ______ do Thomas Jefferson and Abraham Lincoln belong?

单选题Huntington and many of its competitors are working to make remedial instruction a commodity as______and accessible as frozen yogurt. A. ubiquitous B. rational C. necessary D. credible

单选题He displayed a complete lack of courtesy and tact in dealing with his employer.

单选题The younger generation's attraction to stereos cannot be explained only ______ familiarity with technology.

单选题Motorways are, no doubt the safest roads in Britain. Mile (21) mile, vehicle for vehicle, you axe much (22) likely to be killed or seriously injured than on an ordinary road. On (23) hand, if you do have a serious accident on a motorway, fatalities are much more likely to (24) than in a comparable accident (25) on the roads. Motorways have no (26) bends, no roundabouts or traffic lights and (27) speeds are much greater than on other roads. Though the 70 mph limit is (28) in force, it is often treated with the contempt that most drivers have for the 30 mph limit applying in built up areas in Britain. Added to this is the fact that motorway drivers seem to like traveling in groups with perhaps (29) ten meters between each vehicle. The resulting horrific pile-ups (30) one vehicle stops for some reason—mechanical failure, driver error and so on—have become all (31) familiar through pictures in newspapers or on television. How (32) of these drivers realize that it takes a car about one hundred meters to brake to a stop (33) 70 mph? Drivers also seem to think that motorway driving gives them complete protection from the changing weather. (34) wet the road, whatever the visibility in mist or fog, they (35) at ridiculous speeds oblivious of police warnings or speed restrictions (36) their journey comes to a conclusion. Perhaps one remedy (37) this motorway madness would be better driver education. At present, learner drivers are barred (38) motorways and are thus as far as this kind of driving is (39) , thrown in at the deep end. However, much more efficient policing is required, (40) it is the duty of the police not only to enforce the law but also to protect the general public from its own foolishness.

单选题Which of the following would be the best title for the passage?

单选题Cox Radio, one of the nation's largest radio chains, plans to ______ its ties with independent record promoters to distance itself from a payola-like practice that runs rampant in the music business.

单选题As far as rank is concerned, an associate professor is ______ to a professor, though they are almost equally knowledgeable.

单选题 Resale Price Maintenance is the name used when a retailer is compelled to sell at a price fixed by the manufacturer instead of choosing for himself how much to add on to the wholesale price he pays for his supplies. This practice is associated with the sate of "branded" goods, which now form a very considerable proportion of consumers' purchases and it has led to a great deal of controversy. Generally such articles are packed and advertised by the manufacturers, who try to create a special image in the minds of possible purchasers—an image made up of the look of the article, its use, its price, and everything else which might lead purchasers to ask for that brand rather than any other. If a retailer is allowed to charge any price he likes he may find it worthwhile to sell one brand at "cut" prices even though this involves a loss, because he hopes to attract customers to the shop, where they may be persuaded to buy many other types of goods at higher prices. The manufacturer of the brand that has been cut fears that the retailer may be tempted to reduce the services on this article. But even if he does not there is a danger that the customer becomes unsettled and is unwilling to pay the standard price of the article because he feels that he is being "done". This may, and indeed often does, affect the reputation of the manufacturer and lose him his markel in the long run. It is sometimes said also that the housewife—who is the principal buyer of most of these goods—prefers a fixed price because she knows where she is and has saved the bother of going from shop to shop in search of lower prices. If one shop cut all the prices of its branded goods she would undoubtedly have an advantage in shopping there. But this does not happen. A store usually lowers the price of one of two of its articles which act as a decoy and makes up its losses on others, and changes the cut-price articles from week to week so as to attract different groups of customers. And so the housewife may feel rather guilty if she does not spend time tracking down the cheaper goods. How far this is true is a matter of temperament and it is impossible to estimate what proportion of purchasers prefer a price that they can rely on wherever they choose to buy and what proportion enjoy the challenge involved in finding the store that offers them a bargain. Those who oppose Resale Price Maintenance on the other hand, point out that there are now a great many different channels of distribution—chain stores, department stores, co-operative stores, independent or unit shops, supermarkets, mail-order houses, and so on. It would be absurd to assume that all of them have exactly the same costs to meet in stocking and selling their goods, so why should they all sell at the same price? If they were allowed to choose lot themselves, the more efficient retailers would sell at lower prices and consumers would benefit. As it is, the retail price must be sufficient to cover the costs of the less efficient avenues of distribution and this means the others make a bigger profit than necessary at the expense of the public. The supporters of the fixed price argue that this is only half the story. The efficient trader can still compete without lowering his prices. He can offer better service—long credit, or quick delivery or a pleasant shop decor or helpful assistants—and can do this without imperiling the longterm interests of the manufacturer.

单选题We were______in the middle of our conversation.

单选题As a lawyer, she has a high success______in the cases she handles.

单选题The rigor of the winter in Russia was often described by Mogol. A. harshness B. perturbation C. dismay D. pessimism

单选题The television was returned because of a______.

单选题Today is the anniversary of that afternoon in April a year ago that I first saw the strange and appealing doll in the window of Abe Sheftel"s toy shop on Third Avenue near Fifteenth Street, just around the corner from my office, where the plate on the door reads: Dr. Samuel Amory. I remember just how it was that day: the first hint of spring floated across the East River, mixing with the soft-coal smoke from the factories and the street smells of the poor neighborhood. As I turned the comer on my way to work and came to Sheftel"s, I was made once more aware of the poor collection of toys in the dusty window, and I remembered the approaching birthday of a small niece of mine in Cleveland, to whom I was in the habit of sending modest gifts. Therefore, I stopped and examined the window to see if there might be anything suitable, and looked at the confusing collection of unappealing objects—a red toy fire engine, some lead soldiers, cheap baseballs, bottles of ink, pens, yellowed envelopes, and advertisements for soft drinks. And thus it was that my eyes eventually came to rest upon the doll stored away in one comer, a doll with the strangest, most charming expression on her face. I could not wholly make her out, due to the shadows and the film of dust through which I was looking, but I was aware that a tremendous impression had been made upon me as though I had run into a person, as one does sometimes with a stranger, with whose personality one is deeply impressed.

单选题Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. Radiation is the greatest known danger to explorers in space. Doses of radiation are measured in units called "rems". We all receive radiation here on Earth from the sun, from cosmic rays and from radioactive minerals. The "normal" dose of radiation that we receive each year is about 100 millirems; it varies according to where you live, and this is a very rough estimate. Scientists have reason to think that a man can put up with far more radiation than this without being damaged, the figure of 60 rems has been agreed. The trouble is that it is extremely difficult to be sure about radiation damage-- a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of children or even grandchildren. Early space probes showed that radiation varies in different parts of space around the Earth. It also varies in time because, when great spurts of gas shoot out of the sun, they are accompanied by a lot of extra radiation. Some estimates of the amount of radiation in space, based on various measurements and calculations, are as low as 10 rems per year; others are as high as 5 rems per hour. Missions to the moon have had to cross the Van Alien belts of high radiation and, during the outward and return journeys, the Apollo 8 crew accumulated a total dose of about 200 millirems per man. It was hoped that there would not be any large solar flares during the times of the Apollo noon walks because the walls of the LEMs were not thick enough to protect the men inside. Though the command modules did give reasonable protection. So far, no dangerous doses of radiation have been reported, but the Gemini orbits and the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory or in a base on the moon. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far. At present, radiation seems to be the greatest physical hazard to space travelers, but it is impossible to say just how serious the hazard will turn out to be in the future.

单选题The long, wet summer here in the northeastem U.S. notwithstanding, there"s a world shortage of pure, flesh water. As demand for water hits the limits of finite supply, potential conflicts are brewing between nations that share transboundary freshwater reserves. Many people ask why we cannot simply take it from the sea, using our sophisticated technology of desalinization. But a good water supply must be hygienically safe and pleasant tasting and water containing salt would corrode machinery used in manufacturing in addition to producing chemical impurities. Since more than 95% of our water sits in the salty seas, man is left to face the reality that most water on the surface of the earth is not available for US. One very feasible way of sustaining our supply of freshwater is to protect the ecology of our mountains. Mountains and water go together, a fact to which Secretary General Kofi Annan has drawn attention more than once. From 30% to 60% of downstream flesh water in humid areas and up to 95% in arid and semi-arid environments are supplied by mountains. Without interference nature has its own way of purifying water—even though chlorination and filtration are still necessary as a precaution. In a mountainous area, aeration, due to turbulent flow and waterfalls, causes an exchange of gases between the atmosphere and the water. Agriculture, industry, hydroelectric generators and homes that need water to drink and for domestic use depend on these resources and, thus, we must protect mountainous areas as a means of survival.

单选题The large red ants can dig as deep as ten feet to establish nests and retrieve soil for their mounds.

单选题 It is increasingly believed among the expectant parents that prenatal education of classical music can ______ future adults with appreciation of music.

单选题We shall have to pay the bill______, so let's do it at once.