166. The computer system ___________suddenly while he was searching for information on the Internet. 在他上网查找资料的时候计算机系统突然瘫痪。 A. broke down 坏了 B. broke out C. broke up D. broke in

166. The computer system ___________suddenly while he was searching for information on the Internet. 在他上网查找资料的时候计算机系统突然瘫痪。
A. broke down 坏了 B. broke out C. broke up D. broke in

出自：东华大学大学英语4

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