问题补充:
The computer system suddenly while he was searching for information on the Internet.
A. broke down
B. broke out
C. broke up
D. broke in
答案:
(答案→)A. broke down
B. broke out
C. broke up
D. broke in
解析:考查动词短语语意的区别。句意为:“正当他在网上查信息的时候,电脑系统突然瘫痪了。”break down: (机器或车辆)出故障、坏掉。break out: (战争、打斗等不愉快事件)突然开始。break up:结束;解散,散开;变得虚弱、垮掉。break in:强行进入;破门而入。选A。