Three hundred firemen raced to the hotel after a smoke detector________the alarm soon after midnight

题目简介

Three hundred firemen raced to the hotel after a smoke detector________the alarm soon after midnight

题目详情

Three hundred firemen raced to the hotel after a smoke detector________the alarm soon after midnight.
[      ]
A. set off 
B. set out
C. give away  
D. give off
题型:单选题难度:中档来源:同步题

答案

A

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