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:短语辨析。A. 发生故障;失败 B.爆发 C. 打碎;结束 D.打断;闯入。句意:当他正在网上查找信息时,电脑系统突然出故障了。选A。