题目内容

The computer system has ______ .
A.broken outB.broken down
C.broken intoD.broken away
B
词义辨析题。电脑系统瘫痪了。A. broken out 爆发      B. broken down 出故障 C. broken into 闯入   D. broken away 挣脱   根据语境选B
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