题目内容

蟾毒配基的结构特点是

A. 甾核17位有五元不饱和内脂
B. 甾核17位有六元不饱和内脂
C. 甾核3位O连精氨酸
D. 甾核17位有六元饱和内脂
E. 甾核17位有五元饱和内脂

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If the Federation of American Scientists made a list of educational video games, you might expect to find Oregon Trai, the Story of Conestoga Wagons Trekking into the American West, or the geography favorite Where in the World Is Carmen Sandiegol And don’t forget Half-Life 2. That’s the one where you burn alien zombies to death with exploding barrels of fuel. OK, that’s exaggerating—but only a little. Where parents see hours wasted in front of a screen, these scientists see potential. An FAS study released this week, titled "Harnessing the Power of Video Games for Learning," reports that best-selling games are built in surprisingly pedagogical ways. Players improve at their own pace. Beating a level requires experimentation, failure and learning from mistakes. Most new games can be played online, requiring collaboration and leadership. Game play is precisely calibrated to balance challenge and progress. It’s a stark contrast to a typical classroom in which one teacher tries to engage 30 students with printed information. "It’s like hiring an individual tutor for every student," says FAS president Henry Kelly of using video games to teach. "There’s a big argument going on now about whether kids are being tested too much or too little. In a game, you’re continuously being tested and you don’t mind it." Some commercial games are already being used in the classroom. The Civilization series lets users build empires in ancient Persia and other historical periods, and Roller Coaster Tycnon, Where players construct a theme park, combines physics and business management. And the U. S. military makes extensive use of video simulations: the Army reports 7.6 million users have registered for America’s Army, a training and recruiting game. The report calls for a new generation of educational games that are as immersive and graphics-intensive as megabudget titles like Madden NFL 07 and Battlefield 2142. "When you show a child a traditional educational game, they’ll roll their eyes," says Kay Howell, a coauthor of the study. "But I don’t think they roll their eyes because it’s learning; I think it’s because there’s such a huge and obvious gap in quality compared to what they play at home." The federal government, she says, should close that gap by under-writing new game-publishing houses. But some educational observers find the video game recommendations too unorthodox. "This is really silly," says Chester E. Finn, president of the Thomas B. Fordham Foundation, a K-12 education research group in Washington. "Are they next going to propose government-funded studies of the educational value of comic books, reality TV shows and instant messaging" Other critics contend the report’s recommendations shouldn’t be seen as a cure all. "We think it’s a good idea that this stuff is being explored," says Chad Colby, a spokesman for the Department of Education. "People do tend to look at these things as silver bullets, or a fix in themselves, when it’s really one tool out of many." The larger problem with the federation’s ideas, Colby says, is a lack of familiarity with how education funding works: only 8.3 percent of the country’s total education budget comes from the federal government, and most of that is targeted toward students in poverty. The study’s recommendations might be hard to implement: not all school districts have computers and networks capable of running high-end games. The FAS report calls for the production of games that can be Web-based and downloadable to PCs, but it might be less expensive to design games for the established consoles that many families already have at home. "These are technologies that kids and young adults are living with every day of their lives," says Howell. "Why do we expect\ Some people are opposed to the report because

A. parents dislike the recommendations.
B. it has certain practical problem.
C. instant messaging is better than video games.
D. it sounds silly and isn’t useful.

巴豆中含有

A. 醇苷
B. O-苷
C. S-苷
D. C苷
E. N-苷

The United Nations was founded to promote peace, prosperity and human rights. It is doing somewhat better on the first two counts than its critics sometimes make out. The last, however, has been such a failure that it is threatening to bring the whole edifice down. Once revered as the creator of all the great universal human-rights rules and instruments, the 53-member Commission on Human Rights has been thoroughly discredited. If it cannot be fixed it needs to be scrapped. In its present form it serves only to make a mockery of the cause. The reason for this is simple enough. The present committee is packed with members who are themselves serial abusers of human rights. Kofi Annan, the UN Secretary-General, admits that their main purpose in being on the committee is not to strengthen human rights but to protect themselves from criticism. At present, these members include exemplars of virtue such as Zimbabwe, Sudan, Cuba, Saudi Arabia, Nepal and Russia—a veritable roll call of the worst offenders. A plan of sorts exists to reform this mess. Mr. Annan called for the replacement of the commission, which at present meets for just six weeks once a year, by a leaner, tougher, year-round Human Rights Council, which would be ready to act whenever serious abuse was discovered, and whose members should have a solid record on human rights. America and the other leading democracies backed the idea. The serial abusers did not. In the wrangling at a summit on wider UN reforms, Mr. Annan’s baby was reduced to a skeleton. Many wondered whether it could survive. Amazingly, it has just. There is now agreement on the need for a new body, on a par with the Security Council, that would meet several times a year including, when necessary, for emergencies. But its size, powers and composition are still up for grabs. The Americans want no more than 30 members, all with solid human-rights credentials, elected by a two-thirds majority of the General Assembly, along with a routine review of human rights in all 191 UN member states. The abusers want as big a body as possible, elected by a simple majority, as at present, with no membership criteria, and no automatic peer review. Any reform must not just shrink the commission, but must also change the way in which members are elected. At present, regions usually put forward a slate of candidates corresponding to their allotted number of seats, which the General Assembly votes on to the commission as a block. Under one sensible proposal, regions would be required to put forward more contestants than their quota. Each candidate country would then stand separately for election by the General Assembly. Early peer review of all members would further reduce the temptation for thugs to try to get seats. But opposition is fierce, not only from the most notorious offenders, but also from those middle-ranking ones who fear their relatively minor abuses would be put under the spotlight. Timing is tight. The old, unreformed commission is due to hold its next annual meeting. Mr. Annan wants a new one to be ready to take over by then. That means reaching agreement on a blueprint within the next few weeks. If agreement is stymied, the next-best solution will be to wind the existing commission up altogether. Human rights matter too much for the UN to continue to shunt the subject off to a cynical talking shop that has become home to the worst violators. That just blackens the overall reputation of the UN. Kofi Annan hopes that the future commission on human rights should include

A. those without human rights abuse.
B. more than 30 members.
C. examplars of virtue such as Sudan and Russia.
D. members which may function every week.

甲公司2008年1月1日以6 000万元的价格购入乙公司40%的股份,另支付相关费用30万元。购入时乙公司可辨认净资产的公允价值为22 000万元(假定乙公司各项可辨认资产、负债的公允价值与账面价值相等),双方采用的会计政策、会计期间相同。2008年8月10日乙公司出售一批商品给甲公司,商品成本为600万元,售价为800万元,甲公司购入的商品作为存货管理。至2008年年末,甲公司仍未对外出售该存货。乙公司2008年实现净利润1 200万元。甲公司取得该项投资后对乙公司具有重大影响。假定不考虑所得税因素,该投资对甲公司2008年度利润总额的影响为( )万元。

A. 400
B. 3 170
C. 2 770
D. 480

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