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The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
admin
2012-10-20
30
问题
The millions of calculations involved, had they been done by hand, ______ all practical value by the time they were finished.
选项
A、had lost
B、would lose
C、would have lost
D、should have lost
答案
C
解析
考查与过去事实相反的虚拟语气中主句和从句的时态。本句中,从句省略了if而倒装,正常语序应为“if they had been done by hand”,从句的时态是过去完成时,因此主句的谓语形式应为would have done,所以选项C正确。
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专业英语四级
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