【題目】一 When did the computer crash?

一 This morning, while I the reading materials downloaded from some websites.

A.have sortedB.was sortingC.am sortingD.had sorted

【答案】B

【解析】

考查時(shí)態(tài)。句意：——計(jì)算機(jī)是什么時(shí)候崩潰的?——今天早上，當(dāng)我從一些網(wǎng)站下載閱讀材料的時(shí)候。首先根據(jù)時(shí)間狀語(yǔ)this morning知道是發(fā)生過(guò)的事情，去除A、C兩項(xiàng)，然而本句指的是“過(guò)去正在進(jìn)行的動(dòng)作”，所以用過(guò)去進(jìn)行時(shí)，B項(xiàng)正確。

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