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If one of the computers _______, the whole networks would be unable to work.
A.broken downB.broke upC.broke outD.broke in
A

试题分析:考查动词短语辨析。Break down抛锚,出故障;身体垮掉;分解;break up关系破裂;分解;break out爆发;break in闯入;句意:如果有一台电脑出故障,整个网络系统都会瘫痪。根据句意说明A正确。
点评:此类固定短语,在理解句意的基础上,要分清各个之间意思侧重的不同。这就要求学生在平时的学习中,遇到类似的题目需要将用法积累、牢记在脑海中,并且要学会举一反三,这样才能在多变的题目中找到不变的规律。
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