问题
选择题
The computer system broke _____ suddenly while he was searching for information on the Internet．
A．down
B．out
C．up
D．in
答案
答案：A
考查动词搭配：break down崩溃，垮掉，break out“爆发”，break up分手，解体，break in闯入，句意是：当他在网上搜索信息时，电脑系统突然崩溃了。选A.
.