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The millions of calculations involved, had they been done by hand, ______all pra
The millions of calculations involved, had they been done by hand, ______all pra
游客
2025-03-21
18
管理
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、could lose
B、would have lost
C、might lose
D、ought to have lost
答案
B
解析
题干:所涉及的数以百万计的计算量如果用手算的话,到算完时也会完全失去实际价值了。本题测试虚拟语气。这是一个与过去事实相反的虚拟语气句,从句had theybeen done by hand插在主句中,采用倒装形式省略了连词if,表示非真实条件,主句中有明确的时间状语by the time they were finished,所以B选项是正确选项。
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