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【题目】If you do fall out of the boat, your lifejacket will help you to ______ until we can fish you out.

A. stand up B. keep up

C. follow up D. stay up

【答案】D

【解析】句意如果你真从船上掉下去了救生衣就可帮助你漂浮在水面上直到我们把你搭救上来。A. stand up站起来坚持竖立站得住脚;B. keep up保持继续不低落不落后;C. follow up跟踪坚持完成继续做某事;D. stay up熬夜守夜不倒不沉根据句意可知选D。

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