单选题The______British theoretical physicist Stephen Hawking once said in an interview that heaven is a fairy story for people afraid of the dark.

单选题Last week, the Us bishops adopted rules to take priests who minors out of any ministerial activities.

单选题The entire family is ______ in scientific research.

单选题The international Olympic Games, A(regarded) as the world's most B(prestigious) athletic competition, C(take place) once D(every the four years).

单选题Scientists are ______certain that there is a cancer-inhibiting agent in the blood of the shark. A.dubiously B.virtually C.queerly D.randomly

单选题I hope their plan will work, but they themselves are very______ that it will.

单选题Some anthropologists claim that a few aps have been taught a rudimentary sign languages, but skeptics argue that the apes are only __________ their trainers.

单选题{{B}}Passage Three{{/B}} Scholars often seem to operate on the assumption that any analysis with a rosy outlook simply does not adequately understand the matter at hand. Ecotourism researchers have not been derelict in this regard, as the literature review earlier showed. All the researchers who have looked at Capirona's project, however, have been impressed by its grassroots nature and are optimistic about its potential as eco-development (Colvin 1994; Wesche 1993; Silver 1992). All of these researchers, however, visited the community in its early years of operation. As mentioned previously, recent, non-scholarly reports are less positive. Thus there remains some doubt as to the long-term viability of even such a model of indigenous ecotourism development as Capirona. This study originally proposed to study Capimna's project, but that community was weary of such research visits and refused a request to carry out the study there. Palo Blanco, though completing only its first year of ecotourism developmemt was chosen as an alternate site. Perhaps it should not be surprising that the prospects for ecotourism in Rio Blanco appear, as they did in Capirona quite bright. Ecotourism development efforts differ from mainstream development efforts in that, aside from start-up loans, much or all of the continuing financial support comes from tourists rather than from governments or development agencies. As a result, the two main players many ecotourism endeavor—the hosts and the guests—are driven by differing motivations. The local population hopes to improve its own lot by taking advantage of the curiosity, disposable income, and in some cases, perhaps, good intentions of ecotourists. The tourists want to "explore the natural wonders of the world," whether that be a wildebeest migration across the Serengeti or the march of leaf-cutter ants across the jungle floor (Ryan and Grasse 1991: 166). In contrast to mass tourism, ecotourism permits tourists to seek educational self-fulfillment in the form of travel, and tries to transform that activity into something that benefits the greater good—specifically, to fund environmental preservation, rural development, and even cultural survival. However, in order to satisfy everyone—tourists, environmentalists, tour operators and the local hosts—ecotourism must bring into aliganment a variety of contradictory purposes. Ecotourism promotes feelings among tourists that they are part of the solution when, in fact, the very act of flying a thousand miles or more to their destination consumes resources and pollutes the enviroment (cf. Somerville 1994). The beauty of ecotourism is that it can exploit this egotistic motivation; the flaw is that it is forever limited by it. Even a brief foray into development literature, however, shows that flawed conceptualizations are the rule, not the exception. As development, ecotourism may be no more inchoate than any other approach, and in some ways it is as progressive as any theory. For example, ecotourism twin development goals—conserving the environment and benefiting local peoples—are increasingly seen, both within and outside of tourism circles, as interdependent. Without economic development, many argue that environmental conservation is neither ethical nor sustainable (Boo 1990: 1; West and Brechin 1992: 14; Brandon and Wells 1992). Such conservation can be achieved only by providing local people with alternative income sources which do not threaten to deplete the plants and amamis within the protected zone (Brandon and Wells 1992: 557). Most research on this issue, however, assumes that the protective regulations have been established by the government or another external ageacy. In Rio Blanco, however, the people themselves are already acting to protect their land.

单选题An extensive foundation in the basic sciences should be required of all science students, ______.

单选题We think ______ possible for them to fulfil their task in a few weeks.

单选题America is changing its eating habits. Though medical evidence mounts that we are 1 what we eat, consuming a healthier diet has become almost a national passion in the United States. The food-for- fitness phenomenon began in the late 70"s when a U.S. Senate committee 2 the conclusion that six out of ten leading causes of death such as heart disease and cancer might 3 diet. The government issued dietary guidelines 4 Americans to eat a variety of food, maintain proper weight, and limit intake of fat, salt, and sugar. For most Americans, what to eat is a matter of personal choice, 5 one of supply. An excellent nationwide food distribution system assures that fresh 6 is readily available in all parts of the country, 7 the season. Taking advantage of this abundance, many people are forsaking traditional meat-and- potatoes fare 8 lighter meals of salads, fruits, and vegetables. One of the most significant trends in the American way of eating is the healthful change in restaurant food. One of 9 two meals in the United States is eaten outside the home. Restaurants are making special efforts to provide low-fat, low-salt, and low-calorie items. Saladbars, 10 with fresh greens and raw fruits and vegetables, are found everywhere.

单选题The author mentions that English literature "was not part of any academic curriculum" in the early 19th century in order to______.

单选题The word "pristine" in paragraph 2 is closest in meaning to ______.

单选题When I became president of the University of Michigan, affirmative action in higher education was under siege. Buoyed by a successful lawsuit against the University of Texas law school's admission policy and by ballot initiatives such as California's Proposition 209, which outlawed race as a factor in college admissions, the opponents set their sights on affirmative-action programs at college across the country. The rumor that Michigan would be the next target in this campaign turned out to be correct. I believed strongly that we had no choice but to mount the best legal defense ever for diversity in higher education and take special efforts to explain this complex issue, in simple and direct language, to the American public. There are many mispereeptions about how race and ethnieity are considered in college admissions. Competitive colleges and universities are always looking for a mix of students with different experiences and backgrounds — academic, geographic, international, socioeconomic, athletic, public-service oriented, and, yes, racial and ethnic. It is true that in sorting the initial rush of applications, large universities will give "points" for various factors in the selection process in order to ensure fairness as various officers review applicants. Opponents of Michigan's undergraduate system complain that an applicant is assigned more points for being black, Hispanic, or Native American than for having a perfect SAT score. This is true, but it trivializes the real issue: whether, in principle, race and ethnicity are appropriate considerations. The simple fact about the Michigan undergraduate policy is that it gives overwhelming weight to traditional academic factors — some 110 out of a total of 150 points. After that, there are some 40 points left for other factors, of which 20 can be allocated for race or socioeconomic status. Race has been a defining element of the American experience. The historic Brown v. Board of Education decision is almost 50 years old, yet metropolitan Detroit is more segregated now than it was in 1960. The majority of students who each year arrive on a campus like Michigan graduated from virtually all-white or all-black high schools. The campus is their first experience living in an integrated environment. Diversity is not merely a desirable addition to a well-rounded education. It is as essential as the study of the Middle Ages, of international politics, and of Shakespeare. For our students to better understand the diverse country and world they inhabit, they must be immersed in a campus culture that allows them to study with, argue with, and become friends with students who may be different from them. It broadens the mind, and the intellect-essential goals of education. Reasonable people can disagree about affirmative action. But it is important that we do not lose the sense of history, the compassion and the largeness of vision that defined the best of the civil-rights era, which has given rise to so much of what is good about America today.

单选题I was entrusted to______to a newspaper article making predictions for the New Year. A. contribute B. detract C. convert D. entail

单选题Many of these writers used to study in writing clinics .

单选题The little girl caught her______ as she saw the man fall from the tree.

单选题The arguments that cloning will have harmful effects ______.

单选题Scientific evidence from different {{U}}disciplines{{/U}} demonstrates that in most humans the left half of the brain controls language.

单选题I arrive at nine o'clock, teach until twelve thirty and then have a meal; that is my morning ______.