- 单选题Does brain power（）as we get older? Scientists now have some surprising answers.
- A 、descend
- B 、decline
- C 、deduce
- D 、collapse
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参考答案【正确答案：B】
decline意思是“下降，衰退，衰落，衰弱”。译：脑力会随着我们年龄的增长而衰退吗？目前，科学家们对这个问题有了令人惊奇的答案。descend (高度）下降；deduce演绎，推断；collapse崩溃，坍塌。
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