问题： [单选,材料题] 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 0ld genes that continued to behave like young genes．
C . Calorie restriction that works in people．
D . Dieting that makes sure a drug is effective．
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发表于 2022-3-20 17:09:03
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