全国职称英语考试综合类AB级课堂笔记34(4)
文章出处： 发布时间：2006-07-09
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 production（A错误）--probably 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 of these gene changes．）
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 genes that continued to behave like young genes．
C)Calorie restriction that works in people．
D)Dieting that makes sure a drug is effective．
4． A。 分析：借助题干中出现的修饰词most interested 和核心词researchers作为答案线索，同时注意被选项中出现的核心结构，这样找到答案相关句：
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 production--probably 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（该结构与题干中的most interested呼应）was that the mice that only started dieting in old age also benefited from 70 per cent of these gene changes．该句暗示A比更能让研究者感到兴趣，因为句子中用了most surprising的结构
“This is the first indication that these effects kick in pretty quickly,” says Huber Warner from the National Institute on Aging near Washington，D．C．．
No one yet knows if calorie restriction works in people as it does in mice, but Spindler is hopeful．（该句否定了C）“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．
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