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Had I known about this computer program,...

Had I known about this computer program, a huge amount of time and energy       .

A.would have been saved                  B.had been saved

C.will be saved                           D.was saved

 

A 【解析】 试题分析:考查虚拟语气,表示与过去事实相反的情况。其句型为“ if + 主语 + 动词的过去完成式,主语 +would / could / should / might + have + 动词的过去分词”。这道题里从句Had I known about this computer program是省略了if 然后倒装的="If" I had known about this computer program. 主句中a huge amount of time and energy和save是被动关系,所以用would have been saved.句意:如果我(早)知道这计算机程序,就能节约大量短时间和精力了,选A。 考点:考查虚拟语气
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