单选题 I find it wholesome to be alone the greater part of the time, to be in company, even with the best, is soon wearisome and dissipating, and I never found a companion so companionable as solitude. We are for the most part more lonely when we go abroad than when we stay in our chambers, for solitude is not measured by the space that intervenes between a man and his fellows. The farmer, who can work alone all day without feeling lonesome, but must recreate with others at night, wonders how the student can sit alone at night; he does not realize the student, though in the house, is actually at work in his field, chopping his wood as the farmer is in his. Society is commonly too cheap: we meet at very short intervals, not having had time to ac- quire any new value for each other; we meet at meats three times a day and try to give each other a new taste of that musty old cheese that we ate; we live thick and are in each other's way, and I think that we thus lose some respect for one another. We have now agreed on a certain set of rules, called etiquette and politeness, to make this frequent meeting tolerable; certainly less frequency would suffice for all important and hearty communications between men. It would be better if there were but one inhabitant to a square mile, as where I live, for as the value of a man is not in his skin, we need not touch him.

单选题She said it did not help for foreign leaders to badger the United States into action.

单选题______ yelling at me like this? It"s you who are to blame for this affair.

单选题In addition to curricula, programs, and comprehensive support services, schools ______ sexist bias, harassment, and violence, so a number of school districts and states are currently adopting sexual harassment policies.

单选题The newspaper gave a very different ______of what took place.

单选题Whether the giant panda belonged to the bear of raccoon families was a matter of zoological contention for years.

单选题"Tie the knot" in the first line of the first paragraph means ______.

单选题Would you please bring me some ______catalogues? These are too old. A.modern B.fashionable C.up-to-date D.out-of-date

单选题Your plan sounds very attractive, but I don't think it's ______.

单选题 The most exciting kind of education is also the most. Nothing can {{U}}(61) {{/U}} the joy of discovering for yourself something that is important to you. It may be an idea or a bit of information you {{U}}(62) {{/U}} across accidentally--or a sudden {{U}}(63) {{/U}}, fitting together pieces of information or working through a problem. Such personal {{U}}(64) {{/U}} are the "pay off'" in education. A. teacher may {{U}}(65) {{/U}} you to learning and even encourage you in it--but no teacher can make the excitement or the joy happen. That's {{U}}(66) {{/U}} to you. A research paper, {{U}}(67) {{/U}} in a course and perhaps checked at various stages by an instructor, {{U}}(68) {{/U}} you beyond classrooms, beyond the texts for classes and into a {{U}}(69) {{/U}} where the joy of discover and learning can come to you many times. {{U}}(70) {{/U}} the research paper is an active and individual process, and ideal learning process. It provides a structure {{U}}(71) {{/U}} which you can make exciting discoveries, of knowledge and of self that are basic to education. But the research paper also gives you a chance to individualize a school assignment, to {{U}}(72) {{/U}} a piece of work to your own interests and abilities, to show others {{U}}(73) {{/U}} you can do. Waiting a research paper is more than just a classroom exercise. It is an experience in {{U}}(74) {{/U}} out, understanding and synthesizing, which forms the basis of many skills {{U}}(75) {{/U}} to both academic and nonacademic tasks. It is, in the fullest sense, a discovering education. So, to produce a good research paper is both a useful and a thoroughly {{U}}(76) {{/U}} experience! To some, the thought of having to write an assigned number of pages often more than ever produced {{U}}(77) {{/U}}, is disconcerting. To others, the very idea of having to work {{U}}(78) {{/U}} is threatening. But there is no need to approach the research paper assignment with anxiety, and nobody should view the research paper as an obstacle to {{U}}(79) {{/U}} Instead, consider it a goal to {{U}}(80) {{/U}}, a goal within reach if you use the help this book can give you.

单选题Miss Tracy moved to New York in the early 1960s, apparently to escape jealous friends who were becoming increasingly ________ of her success.

单选题The writer asserts that in design strategies and schemes ______.

单选题Passage Five The difference between avian flu and human flu that should be commanding our rapt attention today is that avian influenza, specifically the H5N1 strain known as bird flu, threatens to become the young people's plague. And it is a growing contender to cause a devastating worldwide pandemic in the next few years. We are too used to thinking of flu as an annual annoyance that kills only the frail and elderly. But that just isn't the case for H5N1. With a mortality rate of over 50 percent, this bird flu has killed over 110 people, striking the young and able-bodied the hardest. Its victims cluster predominantly among 5-to-30-year-olds, a pattern that has held up in the 34 known to have died from bird flu so far this year. This vulnerability may stem from the robust and fast-responding immune systems of the young. The victims overreact to the alien virus, triggering a massive immune response called a cytokine storm, turning healthy lungs into a sodden mass of dying tissues congested with blood, toxic fluid, and rampaging inflammatory cells. As air spaces choke off, the body loses oxygen and other organs fail. Scientists have recently shown that H5N1 has ominous parallels with the devastating 1918 flu pandemic, which also jumped directly to humans from birds and disproportionately attacked the young and the strong. With a pattern highly suggestive of a cytokine storm, death sometimes come within just hours, turning many World War I troop ships into death ships. Now imagine hundreds of thousands of young people laboring on respirators, or lying alone in corridors and makeshift hospital rooms, to sick to be helped when the supply of beds, equipment, and trained staff run out. Seem like hype? Not to the medical experts who discussed these scenarios during last week's U.S. News Health Summit on emergency preparedness. This picture puts a face on the U.S. Department of Health and Human Services' projections that, if H5N1 mutates into a readily human-transmissible form, 209,000 to 1.9 million Americans could die. Part of our readiness thinking should be to heed the blunt words of HHS Secretary Michael Leavitt at the summit; any family or community that fails to prepare for the worst, with the expectation that the federal or state government will come to the rescue, will be "tragically wrong". In a pandemic, the government's medical resources will be stretched thin, and it won' be able to guarantee first-line help to any hometown, local hospital, or college campus. Even the national stockpile of Tamiflu, the antiviral that is the best we have to prevent or lessen the impact of the illness, has its limits. If a college student is hospitalized with a possible H5N1 infection, the feds will provide drugs. But they will not make it available to fend off the virus in the many others who may have come in close contact with the infected student. In the existing federal guidance on H5N1, the young and healthy fall into the lowest-priority group for antiviral drugs and vaccines. Student health centers or other providers had better scrounge up their own stockpiles. Containing possible outbreaks on college campuses may be all but impossible. Social distancing- avoiding close contact with other people with air kisses instead of smooches, or even by donning masks and gloves--will be tough to enforce. The threat poses a uniquely difficult challenge. In the best of all scenarios, the virus will lose its fury and leave in its wake a new culture of individual and community preparedness. But we need to get ready now, and not for the best scenario but for the best scenario but for the worst.

单选题______ but I still like him. A. Selfish though he is B. Selfish as he is C. Whether he is selfish or not D. Selfish he may be

单选题Although they are very succinct ——that is why they caught on ——cliches are wasted words because they are ______ expressions rather than fresh ones.

单选题The Greek's lofty attitude toward scientific research—and the scientists' contempt of utility—was a long time dying. For a millennium after Archimedes, this separation of mechanics from geometry inhibited fundamental technological progress and in some areas repressed it altogether. But there was a still greater obstacle to change until the very end of the middle ages: the organization of society. The social system of fixed class relationships that prevailed through the Middle Ages (and in some areas much longer) itself hampered improvement. Under this system, the laboring masses, in exchange for the bare necessities of life, did all the productive work, while the privileged few—priests, nobles, and kings—concerned themselves only with ownership and maintenance of their own position. In the interest of their privileges they did achieve considerable progress in defense, in warmaking, in government, in trader in the arts of leisure, and in the extraction of labor from their dependents, but they had no familiarity with the process of production. On the other hand, the laborers, who were familiar with manufacturing techniques, had no incentive to improve or increase production to the advantage of their masters. Thus, with one class possessing the requisite knowledge and experience, but lacking incentive and leisure, and the other class lacking the knowledge and experience, there was no means by which technical progress could be achieved. The whole ancient world was built upon this relationship—a relationship as sterile as it was inhuman. The availability of slaves nullified the need for more efficient machinery. In many of the conmonplace fields of human endeavor, actual stagnation prevailed for thousands of years. Not all the glory that was Greece and the grandeur that was Rome could develop the windmill or contrive so simple an instrument as the wheelbarrow—products of the tenth and thirteenth centuries respectively. For about twenty-five centuries, two-thirds of the power of the horse was lost because he wasn't shod, and much of the strength of the ox was wasted because his harness wasn't modified to fit his shoulders. For more than five thousand years, sailors were confined to rivers and coasts by a primitive steering mechanism which required remarkably little alteration (in the thirteenth century) to become a rudder. With any ingenuity at all, the ancient plough could have been put on wheels and the ploughshare shaped to bite and turn the sod instead of merely scratching it—but the ingenuity wasn't forthcoming. And the villager of the Middle Ages, like the men who first had fire, had a smoke hole in the center of the straw and reed thatched roof of his one-room dwelling (which he shared with his animals), while the medieval charcoal burner (like his Stone Age ancestor) made himself a hut of small branches.

单选题I had my eyes tested and the report says that my ______ is perfect.

单选题If you go to the park every day in the morning, you will ____ find him doing physical exercise there.