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题目内容 (请给出正确答案)
单选题
____
A

propel

B

probe

C

proceed

D

prompt


参考答案

参考解析
解析:
propel推进,使……向前移动。probe探查;查明。proceed进行;着手。prompt促使;怂恿。文中讲到“这些生物利用……在水中前进”。所以正确答案为A。
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