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

試題分析：考查動(dòng)詞短語辨析。Break down拋錨，出故障；身體垮掉；分解；break up關(guān)系破裂；分解；break out爆發(fā)；break in闖入；句意：如果有一臺(tái)電腦出故障，整個(gè)網(wǎng)絡(luò)系統(tǒng)都會(huì)癱瘓。根據(jù)句意說明A正確。
點(diǎn)評(píng)：此類固定短語，在理解句意的基礎(chǔ)上，要分清各個(gè)之間意思側(cè)重的不同。這就要求學(xué)生在平時(shí)的學(xué)習(xí)中，遇到類似的題目需要將用法積累、牢記在腦海中，并且要學(xué)會(huì)舉一反三，這樣才能在多變的題目中找到不變的規(guī)律。
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