Scientist now have some surprising answers about whether brain power __________ as we get older．

A．deduces

B．descends

C．collapses

D．declines

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参考答案

答案解析

【参考译文】对于大脑的功能是否会随着年龄的增长而衰退，科学家们现在有了令人惊讶的答案。
【答案解析】本题考查动词词义辨析。decline，(数目、价格、比率)下降，衰退，衰落；descend指事物从一个较高的位置上落到较低的位置上，表示空间方位的变化，所以选项D符合句意。deduce，推断；collapse，倒塌，崩溃。

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