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1、 卫生c阅读押题 本课其它级别最好也听听!因为本文在下列国家教材中同时出现。第16篇Eat to Live 卫生C新增文章(押题)第25篇 理工B第39篇 综合A孙老师特别提示:卫生c今年阅读没有新增文章,押题也就变成了猜题,极不靠普,请大家做好无原题或押不中的准备!共1篇文章 第十六篇Eat to Live卫生C新增文章(押题) 第13课 (补充练习)理解课文 Late-night Drinking 卫生c阅读押题 Eat to Live机会只给有准备的人。Opportunities are only for the prepared person. 共1篇文章 Eat to LiveA m
2、eager diet may give you health and long life, but its not much funand it might not even be necessary. We may be able to hang on to most of that youthful vigor even if we dont start to diet until old age. Stephen Spindler and his colleagues from the University of California at Riverside have found th
3、at some of an elderly mouses 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 wont reverse other damage caused by time for the mouse, but could help its liver metabolize drugs or get rid of toxins. Spindlers t
4、eam 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 oldequivalent to about 70 human years. The researchers checked the activity of 11,000 genes from the mou
5、se livers, and found that 46 changed with age in the normally fed mice. The changes were associated with things like inflammation and free radical productionprobably bad news for mouse health. In the mice that had dieted all their lives, 27 of those 46 genes continued to behave like young genes. But
6、 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 thee effects kick in pretty quickly,” says Huber Warner from the National Institute on Aging near Washington, D. C. No one yet
7、 knows if calorie restriction works in people as it does in mice, bus Spindler is hopeful. “Theres 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, out bodies are less efficient
8、 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 isnt sure the trade-off is worth it. “The mice get less disease, they live longer but theyre hungry,” he says. “Even seeing what a diet does, its stil
9、l hard to go to a restaurant and say: I can only eat half of that.” Spindler hopes we soon wont need to diet at all. His company, Life Span Genetics in California, is looking for drugs that have the effects of calorie restriction.练习:1. According to the passage, which of the following is NOT true?A.
10、Eating less than usual might make us live longer.B. If we go on a diet when old, we may keep healthy.C. Dieting might not be needed.D. We have to begin dieting from childhood.2. Why does the author mention an elderly mouse in paragraph 2?A. To describe the influence of old age on mice.B. To illustra
11、te the effect of meager food on mice.C. To tell us how mices liver genes behave. D. To inform us of the process of metabolizing drugs.3. What can be inferred about completely normally fed mice mentioned in the passage?A. They will not experience free radical production.B. They will experience more g
12、enetic rejuvenation in their lifetime.C. They have more old liver genes to behave like young genes.D. They are more likely to suffer from inflammation.4. According to the author, which of the following most interested the researchers?A. The mice that started dieting in old age.B. 27 of those 46 old
13、genes that continued to behave like young genes.C. Calorie restriction that works in people.D. Dieting that makes sure a drug is effective.5. According to the last two paragraphs, Spindler believes thatA. calorie restriction is very important to young peopleB. seeing the effect of a diet, people wil
14、l eat less than normal.C. dieting is not a good method to give us health and long life.D. drugs do not have the effects of calorie restriction. Eat to Live 为生存而食 本文中心:A meager不足的 diet节食A meager不足的diet节食may give you health and long life, but its not much fun娱乐 and it might not even be necessary. We m
15、ay be able to hang on to保持住most of that youthful vigor活力 even if we dont start to diet until old age.粗茶淡饭或许能给你健康和长寿,但这并不有趣-很有可能也没必要。即便在年老以后才 开始节食我们也能在很大程度上保持住青春活力。Stephen Spindler and his colleagues from the University of California at Riverside have found that some of an elderly mouses liver genes
16、can be made to behave as they did when the mouse was young simply by limiting限制 its food for four weeks. The genetic rejuvenation wont reverse other damage caused by time for the mouse, but could help its liver metabolize drugs or get rid of toxins.加州大学Riverside分校的斯蒂芬o斯潘德尔及其同事发现,只要连续四周限制一些衰老的老 鼠进食,它
17、们的肝脏基因就会变得和衰老前一样充满活力。虽然老鼠的肝部基因恢复活力不会逆 转它们在其他方面的老化,但是却有助于这些老鼠的肝脏对药物的新陈代谢和清除毒素。Spindlers team fed three mice a normal diet for their whole lives, and fed another three on half-rations3. Three more mice were switched from the normal diet to half-feed3 for a month when they were34 months oldequivalent t
18、o about 70 human years.斯潘德尔的队员们一直给其中的三只老鼠正常量的饲料,而给另外三只老鼠正常量饲料的一半,给三只34个月大的老鼠(相当于人类年龄的70岁)喂了一个月的半量饲料,之前这三只老鼠 的饲料量是正常的。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 i
19、nflammation炎症 and free radical production4probably bad news for mouse health. In the mice that had dieted all their lives, 27 of those 46 genes 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
20、 of these gene changes.研究者们检查了这些老鼠肝脏的11,000种基因的活性,发现正常饲养的老鼠有46种基因随年龄的改变而改变。这些改变都与炎症和体内自由基的产生有关-这对老鼠的健康来说不是什么好消息。而对于那些终身都在节食的老鼠来说,那46种基因中的27种仍然继续保持着青春活力。但 是最令人吃惊的发现却是那些只是在老年时期节食的老鼠们受益于70%的基因变异。 “This is the first indication that these effects kick in5 pretty quickly,” says Huber Warner from the Natio
21、nal Institute on Aging near Washington, D.C.这只是第一个这些效果迅速起作用的暗示,来自华盛顿特区周边的国家老年学学院的哈勃o华纳说。No one yet knows if calorie restriction works in people as it does in mice, but Spindler is hopeful. “Theres attracting and tempting evidence out there that it will work,” he says.至今仍然没有人清楚卡路里的控制对人类来说是否如同对老鼠那样有效,
22、但是斯潘德尔对此 充满了希望:有足以引人注意的证据表明这同样有效。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.如果
23、这确实也对人类有效,我们有理由相信肝脏也可能恢复活力。举个例子,随着我们一天天衰老,我们的身体对药物的新陈代谢越来越没有效率。短时期内的节食,斯潘德尔说到,完全足以保证药效。But Spindler isnt sure the trade-off 交易 is worth it, 6 “The mice get less disease, they live longer, but theyre hungry,” he says. “Even seeing what a diet does, its still hard to go to a restaurant and say” I can
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