单选题 High-grade written paper is frequently obtained from cotton rags.

单选题The author believed that the remedy--for the social problems is ______.

单选题Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound (为地球引力所束缚的) experience in the summer of 1980,when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point, was assigned to the Marshall Space Flight Center"s propulsion (推进) lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seals could have led to destructive results for the astronauts who relied on them. "I worked a bit with NASA engineers," says Voss, "but I did it mostly by analysis. I used a handheld calculator, not a computer, to do a thermodynamic (热力学) analysis." At the end of the summer, he, like the other NASA-ASEE fellows working at Marshall, summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of NASA, deepened his desire to fly in space, and intensified his application for astronaut status. It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly, and was finally accepted in 1987. Since then he has participated in three space missions. The 50 year-old Army officer, who lives in Houston, is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000. Voss says the ASEE program is wonderful for all involved. "It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA, and establishes a link with our colleges and universities," Voss explains. "There is an exchange of information and an exchange of perspectives that is very important." For the academic side, Voss says, the ASEE program also "brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real-world problems and take it back to the classroom."

单选题I was shocked to learn that such an eminent professor was ignorant to a proverb.

单选题It is______that every one of us should rebuild his world outlook.(2007年中国矿业大学考博试题)

单选题 Engineering students are supposed to be examples of practicality and rationality, but when it comes to my college education I am an idealist and a fool. In high school ! wanted to be an electrical engineer and, of course, any sensible student with my aims would have chosen a college with a large engineering department, famous reputation and lots of good labs and research equipment. But that's not what I did. I chose to study engineering at a small liberal-arts(文科) university that doesn't even offer a major in e lectrical engineering. Obviously, this was not a practical choice; I came here for more noble reasons. I wanted a broad education that would provide me with flexibility and a value system to guide me in my career. I wanted to open my eyes and expand my vision by interacting with people who weren't studying science or engineering. My parents, teachers and other adults praised me for such a sensible choice. They told me I was wise and mature beyond my 18 years, and I believed them. I headed off to college sure I was going to have an advantage over those students who went to big engineering "factories" where they didn't care if you had values or were flexible. I was going to be a complete engineer: technical genius and sensitive humanist(人文学者)all in one. Now I'm not so sure. Somewhere along the way my noble ideals crashed into reality, as all noble ideals eventually do. After three years of struggling to balance math, physics and engineering courses with liberal-arts courses, I have learned there are reasons why few engineering students try to reconcile (协调) engineering with liberal-arts courses in college. The reality that has blocked my path to becoming the typical successful student is that engineering and the liberal arts simply don't mix as easily as I assumed in high school. Individually they shape a person in very different ways; together they threaten to confuse. The struggle to reconcile the two fields of study is difficult

单选题______in conversation, we did not see him go out,

单选题Therefore, A since technical advances in food production and B processing will perhaps be needed to ensure C food availability , meeting food needs will depend D much more on equalizing economic power among the various segments of the populations within the developing countries themselves.

单选题The board of directors required that Mr. Brown {{U}}justify{{/U}} buying the expensive equipment at a time when the company was practicing strict economy.

单选题A man______escaped death when a fire broke out in his home on Sunday morning.

单选题The situation there has become ______ grave in the last few days.

单选题In early limes an armed contest was sometimes initiated by a(n)______to fight and decide the issue.

单选题{{B}}Directions:{{/B}} There are 4 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 and mark your answer on the ANSWER SHEET by blackening the corresponding letter in the brackets.{{B}}Passage One{{/B}} We are told that the mass media are the greatest organs for enlightenment that the world has yet seen; that in Britain, for instance, several million people see each issue of the current affairs program. Panorama. It is true that never in human history were so many people so often and so much exposed to many intimations about societies, forms of life, attitudes other than those which they obtain in their local societies. This kind of exposure may well be a point of departure for acquiring certain important intellectual and imaginative qualities; width of judgment, a sense of the variety of possible attitudes. Yet in itself such exposure does not bring intellectual or imaginative development. It is no more than the masses of stone which lie around in quarry (采石场) and which may, conceivably, go to the making of a cathedral. The mass media cannot build the cathedral, and their way of showing the stone does not always prompt others to build. For the stones are presented within a self-contained and self-sufficient world in which, it is implied, simply to look at them, to observe fleetingly individually interesting points of difference between them, is sufficient in itself. Life is indeed full of problems on which we have to—or feel we should try to—make decisions, as citizens or as private individuals. But neither the real difficulty of these decisions, nor their true and disturbing challenge to each individual, can often be communicated through the mass media. The disinclination to suggest real choice, individual decision, which is to be found in the mass media, is not simply the product of a commercial desire to keep the customers happy. It is within the grain of mass communication. The organs of establishment, however well-intentioned they may be and whatever their form (the State, the Church, voluntary societies, political parties), have a vested interest (既得利益) in ensuring that the public boat is not violently rocked; and will so affect those who work within the mass media that they will be led insensibly towards forms of production which, though they go through the motions of dispute and inquiry, do not break through the skin to where such inquiries might really hurt. They will tend to move, when exposing problems, well within the accepted cliche assumptions of democratic society and will tend neither radically to question these cliches nor to make a disturbing application of them to features of contemporary life. They will stress the "stimulation" the programs give, but this soon becomes an agitation of problems for the sake of the interest of that agitation in itself; they will therefore, again, assist a form of acceptance of the status quo. There are except, ions to this tendency, but they are uncharacteristic.

单选题The United States Food and Drug Administration has shown itself to be particularly Uwary/U with regard to alleged "miracle" drugs in recent times.

单选题Individuals may at various points in their lives experience discrimination in the allocation of re sources either ______ of being too old or too young.

单选题 The drama critic, on the other hand, has no such advantage. He cannot be selective; he must cover everything that is offered for public scrutiny in the principal playhouses of the city where he works. The column space that seemed, yesterday, so pitifully inadequate to contain his comments on Long Day's Journey Into Night is roughly the same as that which yawns today for his verdict on the latest scrap of milk-fed Kitsch that has chanced to find for itself a numbskull hacker with a hundred thousand dollars to lose. This state of affairs may help to explain why the New York theater reviewers are so often, and so unjustly, stigmatized as baleful and destructive fiends. They spend most of their professional lives attempting to pronounce intelligent judgments on plays that have no aspiration to intelligence. It is hardly surprising that they lash out occasionally; in fact, what amazes me about them is that they do not lash out more violently and more frequently. As Shaw said of his fellow-critics in the nineties, they are "a culpably indulgent body of men." Imagine the verbal excoriations that would be inflicted if Lionel Trilling, or someone of comparable eminence, were called on to review five books a month of which three were novelettes composed of criminal confessions. The butchers of Broadway would seem lambs by comparison.

单选题The lady ______ her skirt by sitting on the seat while flying. A. disordered B. disarranged C. creased D. crashed

单选题Which of the following is NOT mentioned as a possible cause of lung diseases?

单选题Every chemical change either results from energy being used to produce the change, or causes energy to be ______ in some form.

单选题The hum of conversation ______ as the chairman mounted the rostrum. A. died out B. died off C. died of D. died away