Question

The calculations, had they been done by hand, ______all practical value by the time they were finished.

A. had lost  B. would lose   C. should have lost  D. would have lost

 

Answer 1

【答案】

D

【解析】

試題分析:句意：這些計(jì)算如果用手工進(jìn)行的話，那么當(dāng)他們完成后將失去所有的實(shí)際價(jià)值。句中had they been done是if they had been done的省略，是對(duì)過(guò)去的虛擬，所以主句謂語(yǔ)應(yīng)該用would have done，選D。

考點(diǎn)：考查動(dòng)詞時(shí)態(tài)。