【题目】The computer system _________ suddenly while he was searching for some important international news .
A. broke down B. broke out
C. broke up D. broke in
在线课程【答案】A
【解析】
考查动词短语。A．broke down出故障 B．broke out爆发 C．broke up 分手，打碎 D．broke in插入。句意：当我正在网上搜索信息时我的电脑系统突然出故障了，故选A。