问题
选择题
In the middle of the night, there suddenly came a loud thunder, _____ the alarms of the cars parking below us.
A．giving off
B．setting off
C．putting off
D．going off
答案
答案：B
短语辨析. A. 发出 B. 出发;引起 C. 推迟;阻止D. 离开;进行.句意:午夜时突然传来一声雷响,引发了停在我们下方的汽车的报警声.故选B.