单选题In the______of the project not being a success, the investors stand to lose up to $ 30 million.

单选题The history of African-Americans during the past 400 years is traditionally narrated (21) an ongoing straggle against (22) and indifference on the part of the American mainstream, and a straggle (23) as an upward movement is (24) toward ever more justice and opportunity. Technology in and of (25) is not at fault; it's much too simple to say that gunpowder or agricultural machinery or fiber optics (26) been the enemy of an (27) group of people. A certain machine is put (28) work in a certain way-the purpose (29) which it was designed. The people who design the machines are not intent on unleashing chaos; they are usually trying to (30) a task more quickly, cleanly, or cheaply, (31) the imperative of innovation and efficiency that has ruled Western civilization (32) the Renaissance. Mastery of technology is second only (33) money as the true measure of accomplishment in this country, and it is very likely that by (34) this under-representation in the technological realm, and by not questioning and examining the folkways that have (35) it, blacks are allowing (36) to be kept out of the mainstream once again. This time, however, they will be (37) from the greatest cash engine of the twenty-first century. Inner-city blacks in particular are in danger, and the beautiful suburbs (38) ring the decay of Hartford, shed the past and learn to exist without contemplating or encountering the tragedy of the inner city. And blacks must change as well. The ways that (39) their ancestors through captivity and coming to freedom have begun to loose their utility. If blacks (40) to survive as full participants in this society, they have to understand what works now.

单选题Death ensued as a result of suffocation. A. heart failure B. an accident C. disease D. asphyxiation

单选题{{B}}Passage 3{{/B}} The need for solar electricity is clear, it is safe, ecologically sound, efficient, continuously available, and is has no moving parts. The basic problem with the use of solar photovoltaic devices is economics, but until recently very little progress has been made toward the development of low-cost photovoltaic devices. The larger part of research funding has been devoted to study of single-crystal silicon solar cells, despite the evidence, including that of the leading manufacturers of crystalline silicon, that the technique holds little promise. The reason for this pattern is understandable and historical. Crystalline silicon is the active element in the very successful semiconductor industry, and virtually all of the solid state devices contain silicon transistors and diodes. Crystalline silicon, however, is particularly unsuitable to terrestrial solar cells. Crystalline silicon solar cells work well and are successfully used in the space program, where cost is not an issue. While single crystal silicon has been proven in extraterrestrial use with efficiencies as high as 18 percent, and other more expensive and scarce materials such as gallium arsenide can have even higher efficiencies, costs must be reduced by a factor of more than 100 to make them practical for commercial use. Beside the fact that the starting crystalline silicon is expensive, 95 percent of it is wasted and does not appear in the final device. Recently, there have been some imaginative attempts to make polycrystalline and ribbon silicon, which are lower in cost than high-quality single crystals. But to date the efficiencies of these apparently lower-cost arrays have been unacceptably small. Moreover, these materials are cheaper only because of the introduction of disordering in crystalline semiconductors, and disorder degrades the efficiency of crystalline solar cells. This dilemma can be avoided hy preparing completely disordered or amorphous materials. Amorphous materials have disordered atomic structure as compared to crystalline materials. That is, they have only short-range order rather than the long-range periodicity of crystals. The advantages of amorphous solar cells are impressive. Whereas crystals can be grown as wafers about four inches in diameter, amorphous materials can be grown over large areas in a single process. Whereas crystalline silicon must be made 200 microns thick to absorb a sufficient, amount of sunlight for efficient energy conversion, only I micron of the proper amorphous materials is necessary. Crystalline silicon solar cells cost in excess of $100 per square foot, but amorphous films can be created at a cost of about 50 per square foot. Although many scientists were aware of the very low cost of amorphous solar cells, they felt that they could never be manufactured with the efficiencies necessary to contribute significantly to the demand for electric power. This was based on a misconception about the feature which determines efficiency. For example, it is not the conductivity of the material in the dark which is relevant, but only the photoconductivity, that is the conductivity in the presence of sunlight. Already, solar cells with efficiencies well above 6 percent have been developed using amorphous materials, and further research will doubtless find even less costly amorphous materials with higher efficiencies.

单选题When he arrived, he found ______ the aged and the sick at home.

单选题We went to see the exhibition ______ the storm.

单选题The newspaper reported on the initiative of the organization to establish a private company to professionally ______ prisoners due to be released from prison.

单选题{{B}}Directions:{{/B}} Choose as your answer the word that best fits the blank. On your answer sheet, circle the corresponding letter. My knees were shaking. I{{U}} (41) {{/U}}afraid{{U}} (42) {{/U}}with them,{{U}} (43) {{/U}}I{{U}} (44) {{/U}}myself out on the path to follow them. Amara's husband{{U}} (45) {{/U}}coming back and saw me. "{{U}} (46) {{/U}}my age mates {{U}}(47) {{/U}}this witchcraft. You come back with me and keep watch{{U}} (48) {{/U}}my wife. Help me guard {{U}}(49) {{/U}}body. He will kill her and I cannot prevent it. But he{{U}} (50) {{/U}}killed her in vain. He shall not eat her body." It was dark inside the reception hut, and very quiet. The women{{U}} (51) {{/U}}kept watch over Amara, and her co-wife still sat with her. The man stood looking down upon her. A man must never call his wife{{U}} (52) {{/U}}her name and may never touch her{{U}} (53) {{/U}}public. The man knelt{{U}} (54) {{/U}}his wife. "Child of Lam." She did not{{U}} (55) {{/U}}. Tentatively he{{U}} (56) {{/U}}his hand on her forehead. Perhaps he thought she heard,{{U}} (57) {{/U}}he added bravely, "{{U}} (58) {{/U}}will happen to you, Amara{{U}} (59) {{/U}}wife.." He clasped her hand in{{U}} (60) {{/U}}. We sat on in silence waiting for Amara to die.

单选题Some 23 million additional U. S. residents are expected to become more regular users of the U. S. health care system in the next several years, thanks to the passage of health care reform. Digitizing medical data has been promoted as one way to help the already burdened system manage the surge in patients. But putting people's health information in databases and online is going to do more than simply reduce redundancies. It is already shifting the very way we seek and receive health care. "The social dynamics of care are changing," says John Gomez, vice president of Eclipsys, a medical information technology company. Most patients might not yet be willing to share their latest CT scan images over Facebook, he notes, but many parents post their babies' ultrasound images, and countless patients nowadays use social networking sites to share information about conditions, treatments and doctors. With greater access to individualized health information — whether that is through a formal electronic medical record, a self-created personal health record or a quick instant-messaging session with a physician — the traditional roles of doctors and patients are undergoing a rapid transition. "For as long as we've known, health care has been like this, I go to the physician, and they tell me what to do, and I do it," says Nitu Kashyap, a physician and research fellow at the Yale Center for Medical Informatics. Soon more patients will be arriving at a hospital or doctor's office, having reviewed their own record, latest test results and recommended articles about their health concerns. And even more individuals will be able to skip that visit altogether, instead sending a text message or e-mail to their care provider or consulting a personal health record or smart phone application to answer their questions. These changes will be strengthened by the nationwide shift to electronic medical records, which has already began. Although the majority of U. S. hospitals and doctors' offices are still struggling to start the changeover, many patients already have electronic medical records, and some even have partial access to them. The My Chart program, in use at Cleveland Clinic, the University of Texas Southwestern Medical Center at Dallas and other facilities, is a Web portal(门户)through which patients can see basic medical information as well as some test results. Medical data is getting a new digital life, and it is jump-starting a " fundamental change in how care is provided," Gomez says.

单选题The apartment was______at $20,000 and its owner was happy about that. (2009年北京航空航天大学考博试题)

单选题He gave each servant a ______ present of a hundred dollars every Christmas.

单选题{{B}}Part A{{/B}} Directions: There are 3 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice. Question 1-5 are based on the following passages. The main idea of these business--school academics is appealing. In a word where companies must adapt to new technologies and source of competition, it is much harder than it used to be to offer good employees job security and an opportunity to climb the corporate ladder. Yet it is also more necessary than ever for employees to invest in better skills and sparkle with bright ideas. How can firms get the most out of people if they can no longer offer them protection and promotion? Many bosses would love to have an answer. Sumantrra Ghoshal of the London Business School and Christopher Bartlett of the Harvard Business School think they have one: "Employability." If managers offer the right kinds of training and guidance, and change their attitude towards their underlings, they will be able to reassure their employees that they will always have the skills and experience to find a good job--even if it is with a different company. Unfortunately, they promise more than they deliver. Their thoughts on what an ideal organization should accomplish are hard to quarrel with: encourage people to be creative, make sure the gains from creativity are shared with the pains of the business that can make the most of them, keep the organization from getting stale and so forth. The real disappointment comes when they attempt to show how firms might actually create such an environment. At its nub is the notion that companies can attain their elusive goals by changing their implicit contract with individual workers, and treating them as a source of value rather than a cog in a machine. The authors offer a few inspiring example of companies--they include Motorola, 3M and ABB--that have managed to go some way towards creating such organizations. But they offer little useful guidance on how to go about it, and leave the biggest questions unanswered. How do you continuously train people, without diverting them from their everyday job of making the business more profitable? How do you train people to be successful elsewhere while still encouraging them to make big commitments to your own firm? How do you get your newly liberated employees to spend their time on ideas that create value, and not simply on those they enjoy? Most of their answers are platitudinous, and when they are not they are unconvincing.

单选题There is ______ conflicting information on how much iron women need in their diet.

单选题{{B}}Passage Four{{/B}} Dearest Scottie: I don't think I will be writing letters many more years and I wish you would read this letter twice--bitter as it may seem. You will reject it now, but at a later period some of it may come back to you as truth. When I'm talking to you, you think of me as an older person, an "authority," and when I speak of my own youth what I say becomes unreal to you--for the young can't believe in the youth of their fathers. But perhaps this little bit will be understandable if I put it in writing. When I was your age I lived with a great dream. The dream grew and I learned how to speak of it and make people listen. Then the dream divided one day when I decided to marry your mother after all, even though I knew she was spoiled and meant no good to me. I was sorry immediately I had married her but, being patient in those days, made the best of it and got to love her in another way. Yor came along and for a long time we made quite a lot of happiness out of our lives. But I was a man divided-- she wanted me to work too much for her and not enough for my dream. She realized too late that work was dignity, and the only dignity, and tried to atone for it by working herself, but it was too late and she broke and is broken forever. …… The mistake I made was in marrying her. We belonged to different worlds--she might have been happy with a kind simple man in a southern garden. She didn't have the strength for the big stage-- sometimes she pretended, and pretended beautifully, but she didn't have it. She was soft when she should have been hard, and hard when she should have been yielding. She never knew how to use her energies--she's passed that failling onto you. For a long time I hated her mother for giving her nothing in the line of good habit-- nothing but "getting by" and conceit. I never wanted to see again in this world women who were brought up as idlers. And one of my chief desires in life was to keep you from being that kind of persons, one who brings ruin to themselves and others. When you began to show disturbing signs at about fourteen, I comforted myself with the idea that you were too precocious socially and a strict school would fix things. But sometimes I think that idlers seem to be a special class for whom nothing can be planned, plead as one will with them--their only contribution to the human family is to warm a seat at the common table. ……

单选题Hardly a week passed ______ he got another new ide

单选题Most environmental ______—from climate changes to freshwater and forest habitat loss—have become markedly worse. A. symptoms B. highlights C. indicators D. symbols

单选题The city government is getting its residents to properly ______ their garbage.