单选题[此试题无题干]

单选题{{B}}Directions: For each blank in the following passage, there are four choices marked A,B,C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the Answer Sheet.{{/B}} Dr. William C. Stokoe, Jr., was the chairman of the English Department at Gallaudet University. He saw the way deaf people communicated and was extremely{{U}} (21) {{/U}}. He was a hearing person, and signs of the deaf were totally new to him. Dr. Stokoe decided to propose a study of sign language. Many other teachers were not interested, and thought Dr. Stokoe was{{U}} (22) {{/U}}to think about studying sign language. Even deaf teachers were not very interested in the project. However, Dr. Stokoe did not give up.{{U}} (23) {{/U}}, he started the Linguistics Research Program in'1957. Stokoe and his two deaf assistants, worked{{U}} (24) {{/U}}this project during the summer and after school. The three{{U}} (25) {{/U}}made films of deaf people signing. The deaf people in the films did not understand{{U}} (26) {{/U}}the research was about and were just trying to be nice to Dr. Stokoe. Many people thought the whole project was silly, but{{U}} (27) {{/U}}agreed with Dr. Stokoe in order to please him. Stokoe and his{{U}} (28) {{/U}}studied the films of signing. They{{U}} (29) {{/U}}the films and tried to see patterns in the signs. The results of the research were{{U}} (30) {{/U}}: the signs used by all of the signers{{U}} (31) {{/U}}certain linguistic rules. Dr. Stokoe was the first linguist to test American Sign Language{{U}} (32) {{/U}}a real language. He published the{{U}} (33) {{/U}}in 1960,but not many people paid attention to the study. Dr. Stokoe was still{{U}} (34) {{/U}}—he was the only linguist who{{U}} (35) {{/U}}that sign language was more than gestures. He knew it was a language of its own and not just another form of English.

单选题Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bone or horn, metal knives and more recently, rubber and plastic and that was where we stuck, in surgical instrument terms, for many years. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and industry, but which was also, in time, to change greatly the art and science of surgery. The tool is the laser(激光)and it is being used by more and more surgeons all over the world. As we all know, light is hot, any source of light—from the sun itself down to a simple match burning—will give warmth. But light is usually spread out over a wide area. The light in a laser beam(激光束), however, is concentrated(密集). This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized(针尖大小的)beam. Experiments with these pinpoint beams showed researchers that different energy sources produce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of human eye without harming the front of the eye, simply by passing a laser beam right through the eye-ball. No knives, no stitches(缝针), no unwanted damage—a true surgical wonder. Operations which once made patients tired and in need of long period of recovery time now leave them feeling calm and comfortable. So much more difficult operations can now be tried. The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but also more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.

单选题Mrs. Green received an ______ letter threatening to expose her private life if she refused to pay $10,000.(2010年北京航空航天大学考博试题)

单选题One of the most pressing challenges that the United States—and indeed, the world—will face in the next few decades is how to alleviate the growing stress that human activities are placing on the environment. The consequences are just too great to ignore. Wildlife habitats are being degraded or disappearing altogether as new developments take up more land. Plant and animal species are becoming extinct at a greater rate now than at any time in Earth's history. As many as 30 percent of the world's fish stocks are overexploited. And the list goes on. Yet, there is reason to have hope for the future. Advances in computing power and molecular biology are among the tremendous increases in scientific capability that are helping researchers gain a better understanding of these problems. Recent developments in science and technology could provide the basis for some major, and timely actions that would improve our understanding of how human activities affect the environment. One priority for research is improving hydrological forecasting. It has been estimated that the world's water use could triple in the next two decades. Already, widespread water shortages have occurred in parts of China, India, North Africa, and the Arabian Peninsula. The need for water also is taking its toll on freshwater ecosystems in the United States. Only 2 percent of the nation's streams are considered in good condition, and close to 40 percent of native fish species are rare to extinct. Using a variety of new remote sensing tools, scientists can learn more about how precipitation affects water levels, how surface water is generated and transported, and how changes in the landscape affect water supplies. To prevent outbreaks of infectious diseases in plants, animals, and humans, more study is needed on how pathogens, parasites, and disease-carrying species—as well as humans and other species they infect— are affected by changes in the environment. The overuse of antibiotics both in humans and in farm animals has contributed to the growth of antibiotic-resistant microorganisms. Researchers can take advantage of new technologies in genetics and computing to better monitor and predict the effects that environmental changes might have on disease outbreaks. Humans have made alterations to Earth's surface—such as tropical deforestation, reduction of surface and ground water, and massive development—so dramatic that they approach the levels of transformation that occurred during glacial periods. Such alterations cause changes in local and regional climate, and will determine the future of agriculture. Recent advances in data collection and analysis should be used to document and better understand the causes and consequences of changes in land cover and use.

单选题Some heads of government now fear that negotiations will______before a settlement is reached.

单选题______ everything into consideration ,they ought to be given another chance.A. TakenB. TakingC. To takeD. Having taken

单选题Starting with the Upremise/U that there is life on the planet Mars, the scientist went on to develop his argument.

单选题Passage 4 Plant adaptation can be remarkably complex. Certain species of orchids, for instance, imitate female bees, other plants look and smell like animals, and still others have the appearance of stone. These strange adaptations to life represent just a few of the sophisticated means by which plants enhance their chances of survival. Mimicry in plants or animals is a three-part system. There is a model; the animal, plant, or substrate being imitated. There is a mimic; the organism that imitates the model. And there is a signal receiver or dupe; the animal that cannot effectively distinguish between the model and the mimic. Mimetic traits may include morphological structures, color patterns, behaviors, or other attributes of the mimic that promote its resemblance to a model. That model may be either an unrelated species or an inanimate objects such as the background against which an organism spends most of its time. Mimicry is not an active strategy on the part of an individual plant; flowers do no deliberately trick or deceive animals into visiting them. Mimicry arises as the result of evolution through natural selection and the occurrence of random generic mutations that lead over many generations to the appearance of favorable characteristics. If such traits help to camouflage a plant, for example, the plant is likely to have survival advantage over other plants that are less well camouflaged. The plant will leave more descendants, thereby passing the advantage to the next generation. For natural selection to favor the evolution of mimicry, the mimic must derive a reproductive advantage from modeling itself after another organism or object; its fitness, measured as the number of offspring produced that survive into the next generation must be increased as the result of deception.

单选题Studies show that the things that contribute most to a sense of happiness cannot be bought, a good family life, ______ friendship and work satisfaction. A) as for B) in view of C) in case of D) such as

单选题Will you please lend me the novel when you ______ ?

单选题The express train ______ and many people thronged to the station. A. pulled in B. pulled up C. pulled on D. pulled at

单选题 A. nineteen{{U}}th{{/U}} B. nin{{U}}th{{/U}} C. sou{{U}}th{{/U}}ern D. fif{{U}}th{{/U}}

单选题In recent years, Israeli consumers have grown more demanding as they"ve become wealthier and more worldly-wise. Foreign travel is a national passion; this summer alone, one in 10 citizens will go abroad. Exposed to higher standards of service elsewhere, Israelis are returning home expecting the same. American firms have also begun arriving in large numbers. Chains such as KFC, McDonald"s and Pizza Hut are setting a new standard of customer service, using strict employee training and constant monitoring to ensure the friendliness of frontline staff. Even the American habit of telling departing customers to "Have a nice day" has caught on all over Israel. "Nobody wakes up in the morning and says, "Let"s be nicer,"" says Itsik Cohen, director of a consulting firm. "Nothing happens without competition. " Privatization, or the threat of it, is a motivation as well. Monopolies (垄断者) that until recently have been free to take their customers for granted now fear what Michael Perry, a marketing professor, calls "the revengeful (报复的) consumer". When the government opened up competition with Bezaq, the phone company, its international branch lost 40% of its market share, even while offering competitive rates. Says Perry, "People wanted revenge for all the years of bad service. " The electric company, whose monopoly may be short-lived, has suddenly stopped requiring users to wait half a day for a repairman. Now, appointments are scheduled to the half-hour. The graceless El Al Airlines, which is already at auction (拍卖), has retrained its employees to emphasize service and is boasting about the results in an ad campaign with the slogan, "You can feel the change in the air. " For the first time, praise outnumbers complaints on customer survey sheets. (291 words)

单选题The Spanish temperament is ______ from that of the Portuguese.

单选题 Euthanasia is clearly a deliberate and intentional aspect of a killing. Taking a human life, even with subtle rites and consent of the party involved is barbaric. No one can justly kill another human being. Just as it is wrong for a serial killer to murder, it is wrong for a physician to do so as well, no matter what the motive for doing so may be. Many thinkers, including almost all orthodox Catholics, believe that euthanasia is immoral. They oppose killing patients in any circumstances whatever. However, they think it is all right, in some special circumstances, to allow patients to die by withholding treatment The American Medical Association's policy statement on mercy killing supports this traditional view. In my paper "Active and Passive Euthanasia" I argue, against the traditional view, that there is in fact no normal difference between killing and letting die --if one is permissible, then so is the other. Professor Sullivan does not dispute my argument; instead he dismisses it as irrelevant The traditional doctrine, he says, does not appeal to or depend on the distinction between killing and letting die. Therefore, arguments against that distinction "leave the traditional position untouched". Is my argument really irrelevant? I don' t see how it can be. As Sullivan himself points out, nearly everyone holds that it is sometimes meaningless to prolong the process of dying and that in those cases it is morally permissible to let a patient die even though a few more hours or days could be saved by procedures that would also increase the agonies of the dying. But if' it is impossible to defend a general distinction between letting people die and acting to terminate their lives directly, then it would seem that active euthanasia also may be morally permissible. But traditionalists like professor Sullivan hold that active euthanasia--the direct killing of patients--is not morally permissible; so, if thy argument is sound, their view must ,be mistaken. I can not agree, then, that my argument "leave the traditional position untouched". However, I shall not press this point. Instead I shall present some further arguments against the traditional position, concentrating on those elements of the position which professor Sullivan himself thinks most important. According to him, what is important is, first, that we should never intentionally terminate the life of a patient, either by action or omission, and second, that we may cease or omit treatment of a patient, knowing that this will result in death, only if the means of treatment involved are extraordinary.

单选题Firewalls may best be compared to ______. A．customs officers B．firemen C．doctors D．repairmen