◎ 题干
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
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Had I known about this computer program, a huge amount of time and energy _____. [ ]A. would have been savedB. had been saved C. will be saved D. was saved …”主要考查了你对  【虚拟语气】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。