2. 外语
  3. Does brain power______as we get older? Scientists now have some surprising answers.

Does brain power______as we get older? Scientists now have some surprising answers.

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问题 Does brain power______as we get older? Scientists now have some surprising answers.
选项 A、descend
B、deduce
C、decline
D、collapse
答案C
解析 decline“衰退”，有一个过程，如：His health is declining；collapse“倒塌，崩溃，垮台”，含彻底性意义和最终结果；descend指缓慢地向下运动，多指具体动作；deduce“演绎，推断”。题句意为：随着年龄的增长，脑力是否在逐渐衰退?科学家目前有一些惊人的答案。所以用decline合适。
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