单选题Almost overnight, Ames became a hero of environmentalists when his finding led to new and ______ bans on certain chemicals. A. regulations B. authorities C. orders D. suggestions

单选题An ethics crisis at one of the world's most successful human embryonic stem cell laboratories has plunged the controversial field of research into a new swirl of uncertainty. The accusations surrounding Korean cloning expert Woo Suk Hwang of Seoul National University--the first scientist to grow stem cells inside cloned human embryos--has already killed a spate of planned studies that sought to prove the cells' medical potential. The claims that Hwang may have obtained human eggs for his studies from women who felt pressured to donate are also reigniting a long-smoldering debate in the United States over the ethics of paying young women for their eggs, which are difficult to obtain but essential to the production of stem cells tailored to individuals. Egg donation, which is generally safe but occasionally leads to serious and even life-threatening complications, has been a wedge issue in the stem cell debates, linking feminists and other liberal thinkers to conservatives who favor tighter limits on stem cell research. "We're in danger of making women into guinea pigs for this research even before there are any treatments to be tested," said Marcy Darnovsky, associate director of the Center for Genetics and Society in Oakland, Calif. "We really need clear rules that someone is enforcing." With current techniques, it takes dozens of eggs to make a single cloned human embryo, which is destroyed in the process of extracting the stem cells. That means that if the field of therapeutic cloning is to advance--a field involving the creation of cloned embryos as sources of stem cells that would be genetically matched to particular patients--a significant number of eggs will be needed both to fuel the initial research and eventually to satisfy the demands of patients. Scientists at Advanced Cell Technology of Worcester, Mass. , made the decision to pay women only after a long analysis by an ethics board created by the company, said scientific director Robert Lanza. He still thinks it is the right way to go, Lanza said, given the painful injections involved, the uncomfortable egg suction procedure, and the approximately 5 percent chance of a serious case of hormonal over-stimulation, which can require hospitalization. Others say such payments cannot help but be coercive, especially for poor women who might feel compelled to take on those risks just to make ends meet. In April, the National Academies, chartered by Congress to advise the nation on matters of science, released a report that recommended against payments for human eggs beyond expenses incurred by the donors, in part because of the "sensitivities" inherent in the creation of embryos destined for destruction. But the report's impact remains uncertain as research institutions, fertility clinics and the biggest wild card of them all--Congress--mull the Academies' findings.

单选题He is such a ______ that he built a porch for his house last summer during his vacation. A. productive B. versatile C. authoritative D. solitary

单选题Management was not acting in good faith when it alleged that worker's wages would have to be cut for the company to remain Usolvent/U.

单选题Let's ______ the arrangements with the others before we make a decision.

单选题If I keep this oath faithfully, may I enjoy my life and practice my art, ______ by all men and in all times; but if I swerve from it or violate it, may the reverse be my lot. A. being respected B. respecting C. respectfully D. respected

单选题Which of the following that the author should have said when she quarreled with her former husband but she did not?

单选题Some ______ good luck brought us nothing but trouble.(2003年上海交通大学考博试题)

单选题Soon after Beijing graduate student Gang Dong-chun landed in Taiwan last year to research its political development, the United Daily News invited him to write a guest column. Gang quickly discovered, however, that there was a huge gap between his views and those of his Taiwanese comrades. The result: The Beijing University researcher came in for stinging criticism in the same newspaper. One critic asked how someone from the university whose students launched China's historic plutodemocracy movement of May 4, 1919, could argue that things such as national and economic development should take precedence over democracy. The episode illustrated both the problems and the promise of educational exchanges across the Taiwan Strait. Gang was nevertheless just the first of what may soon be a steady trickle of students, teachers and researchers taking part in educational exchanges. Until now, these have been limited to brief conferences and getting-to-know-you tours of each side's educational centers. But now Taipei and Beijing are allowing longer stays for study and research a significant breakthrough that could help reduce the two sides' many differences. Ironically, the exchanges are gaining momentum despite recent cross-strait tensions. In mid-January, university presidents and administrators from two dozen educational institutions in mainland China met their Taiwanese counterparts for 10 days at National Cheng Kung University in the southern city of Tainan. They discussed how to move from perfunctory to substantive exchanges. "In the past, academics were led by politics," says Wu Jin, the university's president. "This is not right. We should deal with academics and politics separately. " The conference concluded with a politically neutral statement with the bland title: To Create the 21st Century for the Chinese People Through Academic Cooperation. In it, the presidents of leading schools in Taiwan and prestigious mainland institutions agreed to open teaching posts in each others' universities, cooperate on research projects and open doors for students to study on both sides. Weng Shilie, an engineering professor who's president of Shanghai's Jiaotong University, says "Education is forever," implying that political problems are merely temporary. Temporary or not, the obstacles to cooperation remain formidable. Neither side recognizes the other's academic credentials and both governments impose paralyzing restrictions on students. In Taiwan, screening committees at two ministries must vet applications from mainland-Chinese students. Taipei allowed an estimated 6,000 Chinese residents to visit Taiwan for education and cultural exchanges last year, an increase of 50% over 1994. Most were athletes, performing artists and scholars attending conferences. Following Gang's three-month stay last year, Taiwan agreed to let 14 graduate researchers come from China to study; the first are expected to arrive in March. They will research Taiwan-related topics at nine universities. Each student will receive a monthly scholarship of NT $15,000 ($546) for his first four months, a round-trip air ticket, accommodation and health insurance. Education officials in Taipei say they hope to increase the number of scholarships to 20 next year. "We have opened the door," says Bruce Wu, who administers the scholarships from the Chinese Development Fund of the Mainland Affairs Council, a cabinet-level agency in Taipei. "Everything now depends on China's cooperation. " Given the political stalemate between Taipei and Beijing, however, skepticism abounds. In practice, says political scientist Lu Ya-li of National Taiwan University, it is very difficult for the two sides to treat education in a politically neutral way. "Cross-strait academic exchanges are very important. But so far no professors can come here for a long-term teaching assignment, and some schools are against these exchanges for political reasons. " Recent visitors to China say there are already some Taiwanese students studying on the mainland without official approval, Lu and other Taiwanese academics say there is an even stronger attraction among mainland-Chinese professors to teach in Taiwan because salaries are higher and research resources more plentiful. Says Lu. "Some schools here are trying to recruit acuity, mostly in such fields as Chinese literature and the natural sciences. " Still, that may be a pipe dream. Lu says the gap in the social sciences is far too great for such exchanges because of four decades of Marxist ideology. "In political science," sighs Lu, "we still don't speak the same language. /

单选题Connerly insists that the Court's ruling should ______.

单选题As we know, blood types A and B cannot receive AB, but AB may receive A or B. Type O can give to any other group; hence it is often called the ______ do- nor.

单选题They are a firm of good repute and have large financial______.

单选题His work shed {{U}}provocative{{/U}} yet necessary light, on an important way to slow the spread of this deadly virus.

单选题In China, although people in many regions earn much less than those in prosperous regions, they also pay much less for ______ commodities, such as housing. A. disposable B. redundant C. equivalent D. interchangeable

单选题While watching television______.

单选题{{B}}Passage Three{{/B}} In the late 20th century, information has acquired two major utilitarian connotations. On the one hand, it is considered an economic resource, somewhat on par with other resources such as labour, material, and capital. This view stems from evidence that the possession, manipulation, and use of information can increase the cost-effectiveness of many physical and cognitive processes. The rise in information-processing activities in industrial manufacturing as well as in human problem solving has been remarkable. Analysis of one of the three traditional divisions of the economy, the service sector, shows a sharp increase in information-intensive activities since the beginning of the 20th century. By 1975 these activities accounted for half of the labour force of the United States, giving rise to the so-called information society. As an individual and societal resource, information has some interesting characteristics that separate it from the traditional notions of economic resources. Unlike other resources, information is expansive, with limits apparently imposed only by time and human cognitive capabilities. Its expansiveness is attributable to the following: (1) it is naturally diffusive; (2) it reproduces rather than being consumed through use; and (3) it can' be shared only, not exchanged in transactions. At the same time, information is compressible, both syntactically and semantically. The second perception of information is that it is an economic commodity, which helps to stimulate the worldwide growth of a new segment of national economies-the information service sector. Taking advantage of the properties of information and building on the perception of its individual and societal utility and value, this sector provides a broad range of information products and services. By 1992 the market share of the U.S. information service sector had grown to about $ 25 billion. This was equivalent to about one-seventh of the country's computer market, which, in turn, represented roughly 40 percent of the global market in computers in that year. However, the probable convergence of computers and television (which constitutes a market share 100 times larger than computers) and its impact on information services, entertainment, and education are likely to restructure the respective market shares of the information industry before the onset of the 21st century.

单选题I would like to get another table like this one, but the company that made it is out of ______.

单选题It is impossible for parents to shield their children from every danger.

单选题Today, we have the longest peacetime expansion in our history. After years and years of deficits, we now have budget surpluses for years ahead. More people have a chance to realize the American Dream than ever before. More children have a chance to realize their full potential than ever before. We"ve laid a foundation to preserve our prosperity for future generations. Now, as the budget deadline rapidly approaches this year, we face many of the same tough choices again. And once again, I think the answer is clear: To build a strong nation in the new century, we must continue to invest in our future. That means we must strengthen social security, secure and modernize medicare, and pay off the national debt in fifteen years, making America debt-free for the first time since 1835. And once again, it means we must invest in education, not sacrifice it. Months ago, I sent Congress a responsible budget to maintain our fiscal discipline and honor our commitment to our Children"s education. So far the Republicans in Congress haven"t put forth a budget of their own. In fact, they"re so busy trying to figure Out how to pay for their irresponsible tax plan that they"re in serious danger of not meeting their obligation to finish the budget by the end of the budget year. Even worse, they"re preparing to pay for their own pet projects at the expense of our children"s education. We know now that the Republicans" risky tax cut would force us to slash vital funding for education by as much as 50 percent over the next ten years. But what many people don"t know is that next year alone, the Republican plan would cut the bill that funds education by nearly 20 percent. Now, ff carried out, this plan would lead to some of the worst cuts in education in our history. More than 5,000 teachers could be laid off. Fifty thousand students could be turned away from after-school and summer-school programs. More than 2 million of our poorest students in our poorest communities would have a smaller chance of success in school and in the workplaces of the future. These aren"t just numbers on a balance sheet; they"re vital investments in our children and our future. In a time when education is our top priority, Republicans in Congress are making it their lowest priority. So let me be clear: ff the Republicans send me a bill that doesn"t live up to our national commitment to education, I won"t hesitate to veto it. If it undermines our efforts to hire high-quality teachers to reduce class size in our public schools, I will veto it. If it fails to strengthen after-school, and summer-school programs, I"ll veto it. If it underfunds college scholarship programs, I will veto it. If it sends me a bill that turns its back on our children and their future, I"ll send them back to the drawing board. I won"t let Congress push through a budget that"s paid for at the expense of our children and our future prosperity.