题目内容
In the cross-lake swimming race, a boat will be ____in case of an emergency.
| A.standing by | B.turning on | C.getting on | D.running on |
A
句意:有船只严阵以待,预防紧急情况。stand by 为不及物短语:to wait and be ready for action if needed 准备行动;待机;turn on 打开;get on进展;run down撞倒。根据句意,B 、C、D 三项均不符合。
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