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Doing sports at least one hour a day helps to        ourselves       .
A. build...up             B. send...up               C. pick...up
A

试题分析:build...up建立,增强;send...up 提出,使上升;pick...up捡起,学会.句意:每天最少做一个小时的锻炼有助于增强我们的体质。故选A。
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