Some biologists believe this is an ancient survival strategy, a diet with 30 percent fewe

Some biologists believe this is an ancient survival strategy, a diet with 30 percent
fewer calories than usual increased life span.
A. for which
B. to which
C. of which
D. in which

A. for whichB. to whichC. of which(答案→)D. in which解析：可联系答.案.网客服索取。

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