2. 自考
  3. The millions of calculations involved, had they been done by hand, ______all practical value by the time they finished.

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

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问题 The millions of calculations involved, had they been done by hand, ______all practical value by the time they finished.
选项 A、could lose
B、would have lost
C、might lose
D、ought to have lost
答案B
解析
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