单选题Every night she listened to her father going around the house, locking the doors and windows. She listened; the back door closed; she could hear the fastener of the kitchen window's click, and the restless pad of his feet going back to try the front door. It wasn't only the outside doors he locked; he locked the empty kitchen too. He was looking something out, but obviously it was something capable of entering into his first defenses. He raised his second line all the way up to bed. In fourteen years, she thought unhappily, the house will be his; he had paid twenty-five pounds down and the rest he was paying month by month as rent. "Of course," he was in the habit of saying, "I've improved the property. " "Yes," he repeated, "I've improved the property," looking around for a nail to drive in, a weed to uproot. It was more than a sense of property; it was a sense of honesty. Some people who bought their homes through the society let them go to rack and ruin and then cleared out. She stood with her ear against the wall, a small, dark, angry, immature figure. There was no more to be heard from the other room; but in her inner ear she still heard the footsteps of a property owner, the tap-tap of a hammer, the scrape of a spade, the whistle of radiator steam, a key turning, a bolt pushed home, the little busy sounds of men building barriers. She stood planning.

单选题After a concert tour in Asia, Canada and the U.S., he will ______ work on a five-language opera.

单选题The mountainous areas of the country are ______ populated. A. infrequently B. sparsely C. slightly D. loosely

单选题We are convinced that we are on the ______of an important discovery.(2004年上海理工大学考博试题)

单选题A Any property that a bankrupt person B may still have is usually divided C among the various people to whom money D are owed .

单选题Today people still don"t make health a(n) ______ because they have no time.

单选题In the early years of the twentieth century, astrophysicists turned their attention to a special category of stars, known as Cepheid (造父变星) variables. A variable star is one whose apparent brightness changes from time to time. Among some variables, the change in brightness occurs so slowly as to be almost imperceptible; among others, it occurs in sudden, brief, violent bursts of energy. Cepheid variables have special characteristics that make them a useful astronomical tool. It was Henrietta Leavitt, an astronomer at the Harvard Observatory, who first examined the Cepheid variables in detail. She found that these stars vary regularly in apparent brightness over a relatively short period of time—from one to three days to a month or more. This variation in brightness could be recorded and precisely measured with the help of the camera, then still a new tool in astronomy. Leavitt also noticed that the periodicity of each cepheid variable—that is the period of time it took for the star to vary from its brightest point to its dimmest, and back to its brightest again—corresponded to the intrinsic or absolute brightness of the star. That is, the greater the star's absolute brightness, the slower its cycle of variation. Why is this so? The variation in brightness is caused by the interaction between the star's gravity and the outward pressure exerted by the flow of light energy from the star. Gravity pulls the outer portions of the star inward, while light pressure pushes them outward. The result is a pulsating in-and-out movement that produces increasing and decreasing brightness. The stronger the light pressure, the slower this pulsation. Therefore, the periodicity of the Cepheid variable is a good indication of its absolute brightness. Furthermore, it is obvious that the more apparent brightness of any source of light decrease the further we are from the light. Physicists had long known that this relationship could be described by a simple mathematical formula. If we know the absolute brightness of any object—say a star—as well as our distance from that object, it is possible to use the inverse square law to determine exactly how bright that object will appear to be. This laid the background for Leavitt's most crucial insight. As she had discovered, the absolute brightness of a Cepheid variable could be determined by measuring its periodicity. And, of course, the apparent brightness of the star when observed from the earth could be determined by simple measurement. Leavitt saw that with these two facts and the help of the inverse square law, it would be possible to determine the distance from earth of any Cepheid variable. If we know the absolute brightness of the star and how bright it appears from the earth, we can tell how far it must be. Thus, if a Cepheid variable can be found irt any galaxy, it is possible to measure the distance of that galaxy from earth. Thanks to Leavitt's discovery, astronomical distances that could not previously be measured became measurable for the first time.

单选题These were stubborn men not easily______to change their mind.(中国矿业大学2008年试题)

单选题Most of the civil servants involved in the affair have been successfully ______ and sentenced.

单选题Personality is to a large extent inherent—A-type parents usually bring about A-type offspring. But the environment must also have a profound effect, since if competition is important to the parents, it is likely to become a major factor in the lives of their children. One place where children soak up A-characteristics is school, which is, by its very nature, a highly competitive institution. Too many schools adopt "the win at all costs" moral standard and measure their success by sporting achievements. The current passion for making children compete against their classmates or against the clock produces a two-layer system, in which competitive A-types seem in some way better than their B-type fellows. Being too keen to win can have dangerous consequences: remember that Pheidippides, the first marathon runner, dropped dead seconds after saying: "Rejoice, we conquer!" By far the worst form of competition in schools is the disproportionate emphasis on examinations. It is a rare school that allows pupils to concentrate on those things they do well. The merits of competition by examination are somewhat questionable, but competition in the certain knowledge of failure is positively harmful. Obviously, it is neither practical nor desirable that all A-youngsters change into B"s. The world needs A-types, and schools have an important duty to try to fit a child"s personality to his possible future employment. It is top management. If the preoccupation of schools with academic work was lessened, more time might be spent teaching children surer values. Perhaps selection for the caring professions, especially medicine could be made less by good grades in chemistry and more by such considerations as sensitivity and sympathy. It is surely a mistake to choose our doctors exclusively from A-type stock. B"s are important and should be encouraged.

单选题His major task is to {{U}}integrate{{/U}} the work of Various bureaus under the ministry.

单选题{{B}}Passage 3{{/B}} Every profession or trade, every art, and every science has its technical vocabulary, the function of which is partly to designate things or processes which have no names in ordinary English, and partly to secure greater exactness in nomenclature. Such special dialects, or jargons, are necessary in technical discussion of any kind. Thousands of these technical terms are very properly included in every large dictionary, yet, as a whole, they are rather on the outskirts of the English language than actually within its borders. Different occupations, however, differ widely in the character of their special vocabularies. In trades and handicrafts, and other vocations, like farming and fishery, that have occupied great numbers of men from remote times, the technical vocabulary, is very old. Hence, though highly technical in many particulars, these vocabularies are mole familiar in sound, and more generally understood, than most other technicalities. The special dialects of law, medicine, divinity, and philosophy have also, in their older strata, become pretty familiar to cultivated persons, and havecontributed much to the popular vocabulary. Yet every vocation still possesses a large body of technical terms that remain essentially foreign, even to educated speech. And the proportion has been much increased in the last fifty years, particularly in the various departments of natural and political science and in the mechanic arts. Here new terms are coined with the greatest freedom and abandoned with indifference when they have served their turn. Most of the new coinages are confined to special discussions, and seldom get into general literature or conversation. Yet no profession is nowadays, as all professions once were, a close guild. The lawyer, the physician, the man of science, the divine, associates freely with his fellow-creatures, and does not meet them in a merely professional way. Furthermore, what is called "popular science" makes everybody acquainted with modem views and recent discoveries. Any important experiment, though made in a remote or provincial laboratory, is at once reported in the newspapers, and everybody is soon talking about it. Thus our common speech is always taking up new technical terms and making them commonplace.

单选题It is important in scientific experiments that the chemicals should be kept at a(n)______temperature of 40 degrees.

单选题In recent weeks both housing and stock prices have started to retreat from their Uirrationally /Uamazing highs.

单选题"It's almost eight o'clock." As if______ the bell in the church began to toll for Matins.

单选题Since the Hawaiian Islands have never been connected to other landmasses, the great variety of plants in Hawaii must be a result of the long-distance dispersal of seeds, a process that requires both a method of transport and an equivalence between the ecology of the source area and that of the recipient area. There is some dispute about the method of transport involved. Some biologists argue that ocean and air currents are responsible for the transport of plant seeds to Hawaii. Yet the results of flotation experiments and the low temperatures of air currents cast doubt on these hypotheses. More probable is bird transport, either externally, by accidental attachment of the seeds to feathers, or internally, by the swallowing of fruit and subsequent excretion of the seeds. While it is likely that fewer varieties of plant seeds have reached Hawaii externally than internally, more varieties are known to be adapted to external than to internal transport.

单选题I______ of his course of action, so I told him to go ahead. A. agreed B. consented C. accepted D. approved

单选题She won an award for the most ______design.