题目内容
He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system _________.
A. broke in B. broke up C. broke out D. broke down
D
【解析】
试题分析:A. broke in闯入,插话,B. broke up 分手,解体,C. broke out 爆发,D. broke down崩溃,破裂,出故障,句意:他不时的停顿擦前额的汗,因为空调系统出故障了。所以选D。
考点:考查动词短语
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