问题
选择题
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
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。