题目内容
根据下列文章,请回答 36～40 题。
Eat to Live
A meager(不足的)diet may give you health and a long life，but it's not much fun and it might not even be necessary．We may be able to hang on to most of that youthful vigor even if we don’t start to diet until old age．
Stephen Swindler and his colleagues from the University of California at Riverside have found that some of an elderly mouse’s liver genes can be made to behave as they did when the mouse was young simply by limiting its food for four weeks．The genetic rejuvenation(恢复活力)won’t reverse other damage caused by time for the mouse，but could help its liver metabolize(新陈代谢)drugs or get rid of toxins(毒素)．
Swindler’s team fed three mice a normal diet for their whole lives，and fed another three on half-rations．Three more mice were switched from the normal diet to half-feed for a month when they were 34 months old——equivalent to about 70 human years．
The researchers checked the activity of 11，000 genes from the mouse livers，and found that 46 changed with age in the normally fed mice．The changes were associated with things like inflammation and free radical(自由基)production—probably bad news for mouse health．In the mice that had dieted all their lives，27 0f those 46 9enes continued to behave like young genes．But the most surprising finding was that the mice that only started dieting in old age also benefited from 70 per cent of these gene changes．
“This is the first indication that these effects kick in pretty quickly,” says Huber’ Warner from the National Institute on Aging near Washington，DC．
No one yet knows if calorie restriction works in people as it does in mice，but Spindler is hopeful．“There’s attracting and tempting evidence out there that it will work，”he says．
If it does work in people，there might be good reasons for rejuvenating the liver．As we get older，our bodies are less efficient at metabolizing drugs，for example．A brief period of time of dieting。says Spindler,could be enough to make sure a drug is effective．
But Spindler isn’t sure the trade—off(交换)is worth it．“The mice get less disease，they live longer, but they’re hungry,” he says．“Even seeing what a diet does，it's still hard to go to a restaurant and say：‘I can only eat half of that’．”
Spindler hopes we soon won’t need to diet at all．His company, Life Span Genetics in California，is looking for drugs that have the effects of calorie restriction．
第 36 题 According to the passage，which of the following is NOT true？
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(2008，40)在商务谈判报价中，运用不同的表达方式，其效果也不一样。将价格与产品的使用周期结合起来，计算出单位时间的用度及其所对应的支出，以表明价格不贵的方法，属于（）。
下列属于现场海关已经放行但尚未结关的进境货物是： ____________。
货物报关的进口阶段是指进口货物收货人或其代理人根据海关对进境货物的监管要求，在货物进境时，向海关办理相关手续的过程，包括___________环节。
根据下列文章,请回答 23～30 题。
The Science of Sport
1 At the 2004 Olympic Ga mes in Athens, the Chinese athlete Liu Xiang equaled the world record for the 110 metres hurdles (跨栏) when he ran the race in 12.91 seconds. This record time had been set in 1993 by British sprinter （短跑运动员） Colin Jackson and 9 years went by before another athlete was able to run as fast.
2 Record-breaking in all track events is slowing down and we appear to be moving much closer to the limits of human performance. Nevertheless, every four years, records which were previously thought to be unbeatable are broken. So what's behind this never-ending improvement in performance？ And how long can we keep breaking records？ is there alimit to human performance or will athletes continue to gain seconds？
3 Most experts a gree that it isn't the athletes' bodies which ha ve changed but the huge advances in sport science which ha ve enabled them to improve their performances. The individual athlete obviously has to ha ve the necessary skill and determination to succeed, but the help of science and technology can be significant. Research has brought abetter understanding of the athlete's body and mind but the advances in sports equipment technology ha ve also had an important impact on human performance.
4 Scientists ha ve shown that an athlete's body's needs vary according to the type of sport. This research has helped top sports people to adapt their training progra mme anti diet better to their particular needs. Running the marathon and cycling, for exa mple, are endurance (耐力) sports and require adifferent parathion (硝苯硫磷脂) to that of a 100-metre sprinter. In some sports, changes in techniques ha ve significantly !reproved performance.
5 But in any sport, aplayer's success or failure results from Acombination of both physical and mental abilities. Most coaches use psychological techniques to help their athletes cope with stress and concentrate on their performance. For exa mple, the English football tea m listens to music in the changing rooms before a ga me to help the players rela x and not feel so nervous. Before Adifficult match, tennis players are encoura ged to use visualization (想象) techniques to build confidence and this is almost as good as practice.
6 But as science begins to dominate sport, are we in danger of losing sight of the head of the competition, the sporting challenge？ What's more, are all these advanta ges fair？
第 23 题 Paragraph 2_____________
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