Question

In the swimming race, three boats will be ____in case of an emergency.

A. standing by       B. turning on       C. getting on           D. running on

Answer 1

       A      

解析:

       题意：有有三只船严阵以待，预防紧急情况。stand by 准备行动；待机；turn on 打开；get on进展；run down撞倒。