问题
选择题
Many people are ________ as to what to do when there is a fire.
A．at a loss
B．at risk
C．at ease
D．at a distance
答案
答案：A
题目分析：此处at a loss不知所措； at risk 冒着生命危险； at ease轻松地；at a distance遥远地；久远地；句意：许多人当有火灾的时候不知所措。根据句意选A。