单选题Researchers at Children's Hospital of Pittsburgh announced they had discovered ______ evidence that a virus is involved in what used to be called juvenile diabetes. A. incessant B. compelling C. identical D. problematic

单选题 Many researchers have found greater dependence and obedience in very young girls, greater autonomy and activity in boys. When a barrier is set up to separate children from their mothers, boys try to knock it down; girls cry helplessly. There is little doubt that mother's encouragement or discouragement—of such behavior plays a major role in determining adult personality. For example, a mother often stimulates male autonomy by throwing a toy far away from her young son, thus silently suggesting to him that he leaves her to get it. Animal studies suggest that there may be a biological factor in material behavior; mothers of some monkeys punish their male babies earlier and more often than their female offspring; they also touch their female babies more often and act more protectively toward them. As for the controversial question of female "{{U}}passivity{{/U}}", psychologist Helen Deutsh believes that the concept has been misunderstood. "There is no contradiction between being feminine and working. The self can be active in both men and women," she says. It is only in love and sex that passivity is particularly appropriate for women. As she sees it, passivity is no more than a king of openness and warmth; it does not mean "inactivity of emptiness". Another controversy ranges over the effect of hormones. Aggressive women; who discount hormonal influence, disagree violently with scientific researchers, who almost unanimously agree that hormones help determine how people feel and act. So far, there have been few studies of male hormones, but scientists think they may eventually discover hormonal cycles in men that produce cyclic changes in mood and behavior. As for females, studies have indicated that 49 percent of female medical and surgical admissions, most psychiatric hospital admission and 62 percent of violent crimes among women prisoners are related with hormonal cycles in women.

单选题Trivial breaches of regulations we can pass over, but more serious ones will have to be investigated.

单选题The laser represents a true marriage between science and technology, the men who devised it were ______ engineers and physicists.

单选题The government has hardly taken measures to crack down on these crimes when new ones occurred.

单选题He drove fast and arrived about an hour ______ the meeting schedule.

单选题In most aspects of medieval life, the closed corporation prevailed. But compared to modern life, the medieval urban family was a very open unit: for it included, as part of the normal household, not only relatives by blood but a group of industrial workers as well as domestics whose relation was that of secondary members of family. This held for all classes, for young men from the upper classes got their knowledge of the world by serving as waiting men in a noble family: what they observed and overheard at mealtime was part of their education. Apprentices lived as members of the master craftsman's family. If marriage was perhaps deferred longer for men than today, the advantages of home life were not entirely lacking, even for the bachelor. The workshop was a family; likewise the merchant's counting house. The members ate together at the same table, worked in the same rooms, slept in the same or common hall, converted at night into dormitories, joined in the family prayers, participated in the common amusements. The intimate unity of domesticity and labour dictated the major arrangement within the medieval dwelling-house itself. Houses were usually built in continuous rows around the perimeter of their gardens. Freestanding houses, unduly exposed to the elements, wasteful of the land on each side, harder to heat, were relatively scarce: even farmhouses would be part of a solid block that included the stables, barns and granaries. The materials for the houses came out of the local soil, and they varied with the region. Houses in the continuous row forming the closed perimeter of a block, with guarded access on the ground floor, served as a domestic wall: a genuine protection against felonious entry in troubled times. The earliest houses would have small window openings, with shutters to keep out the weather; then later, permanent windows of oiled cloth, paper and eventually glass. In the fifteenth century, glass, hitherto so costly it was used only for public buildings, became more frequent, at first only in the upper part of the window. A typical sixteenth-century window would have been divided into three panels: the uppermost panel, fixed, would be of diamond-parted glass; the next two panels would have shutters that opened inwards; thus the amount of exposure to sunlight and air could be controlled, yet on inclement days, both sets of shutters could be closed, without altogether shutting out our light. On any consideration of hygiene and ventilation this type of window was superior to the all-glass window that succeeded it, since glass excludes the bactericidal ultra-violet rays.

单选题In reading, whatever the material, the professor can always find the best elements from the mass of symbols. A. isolate B. pinpoint C. point D. figure out

单选题When I was an editor, I always preferred to apologise promptly, Uwhat/U the merits of the case, rather than face the expense and, Uimportantly/U, the time consuming complexities and debilitating worry of litigation, libel being one of the least satisfactory branches of the law.

单选题If one wants to keep healthy, he should never eat anything ______.

单选题There is a loss of self-confidence, a sense of personal failure, great anger and a feeling of being utterly ______. A. let alone B. let out C. let down D. let on

单选题I suppose the party ended in a friendly atmosphere, isn't it?

单选题He has never worried about his properties because he has ______ them against disasters and theft.

单选题SD Memory Cards are versatile, high-capacity storage cards that are extremely small-about the size of a postage stamp. A．adaptable B．adoptable C．variable D．veritable

单选题For the last few decades, the Japanese concept of a good life was defined by narrow {{U}}parameters{{/U}}: children would study hard, attend the best university possible, and join a big company as a "salaryman" or as an "office lady."

单选题Additionally, grammatical and ______ choices are available to the writer, as reading the examples above will show, and everyone knows the special artistry and techniques involved in composing written memorandums or letters if hey are to achieve precisely the purpose for which they are intended.

单选题The great chariot of society, which for so long had run down the gentle slope of tradition, now found itself powered by an internal combustion engine. Transactions and gain 21 a new and startling 22 force. What forces could have been 23 powerful to smash a comfortable and 24 world and institute in its place this new society? There was no single massive 25 . It was not great events, single adventures, individual laws, or charming 26 which 27 about the economic revolution. It was a process of internal growth. First, there was the gradual emergence of national political 28 in Europe. A second great current of change was to be found in the slow decay of the religious spirit under the 29 of the skeptical, inquiring, humanist views of the Italian Renaissance. Still another 30 current lies in the slow social changes that eventually 31 the market system possible. In the 32 of this change, power naturally began to gravitate into the hands of those who understood money matters-the merchants. Perhaps most important of all in the pervasiveness of its effect was a rise in scientific curiosity. 33 the world would wait until the age of Adam Smith for its 34 burst of technology, the Industrial Revolution could net have taken place had not the ground been prepared 35 a succession of basic sub-industrial discoveries. No single one of these currents, acting by itself, could have turned society 36 . Indeed, many of them may have been as much the 37 as the causes of a great convulsion in human organization. History turns no 38 corners, and the whole vast upheaval sprawled out over time. Evidences of the market way of life sprang up side by side with older traditional ways, and remnants of the former day 39 long after the market had for all practical purposes taken over the 40 principle of economic organization.

单选题This leaves us with the challenge of finding some politically practicable way to reduce greenhouse gas emissions. But it is an awkward truth that when most U.S. senators were asked informally in 2000 if they would support the Kyoto Protocol should President George W. Bush send it to the Senate for ratification , the overwhelming majority, Democrats as well as Republicans, said they could not. The reason for the liberals"surprising reply is clear. Many studies, not all by conservatives, suggest that full compliance with the terms of the Kyoto Protocol would likely lead to a deep American recession. For those willing to Fun this risk, sober reflection on the consequences of the economic collapse of 1929 and the subsequent worldwide depression with all its political and ultimately military consequences is certainly in order. That said, what can be done, in particular by our own country? Independent of the issues raised by the Kyoto Protocol, and given the weight of evidence that the problem of global warming is serious and fraught with dire consequences, failure to do anything at all and instead to promote "business as usual" is downright criminal. Yet the Bush administration has given no more than lip service to the problem, though that could be changing. It is one thing to weigh alternatives and implement compromises that reflect the complexity of the problem; it is quite another thing to do nothing, especially if doing nothing is just a way of securing support from certain industries that worsen the problem. There are, after all, things that can be done. Reopening a serious international dialogue, and not just saying a few good words, would be a useful if inadequate start. Not every problem must be solved before the weight of evidence becomes so compelling that certain initial steps become almost mandatory. We already know how to make more fuel-efficient automobiles, yet no national policy has surfaced to accomplish this. The scientific and engineering communities are the ones best suited to identify the scientific research that is still needed and the technical projects that show the greatest promise. These issues should be decided by them and not the politicians. Once solutions look promising, as a few already do, industry will be all too ready to jump in, for at that stage there is money to be made. And only a fool would underestimate human ingenuity when given a proper incentive, or the strength of American industry once the boiler is lit under it.

单选题The underlined word "adjacent" in the last paragraph is closest in meaning to ______.

单选题Is there any occasion for my appearance before the court? A．objection B．cause C．doubt D．question