. The millions of calculations involved, had they been done by hand, _____ all practical value by the time they were finished.
| A．could lose | B．would have lost | C．might lose | D．ought to have lost |
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. The millions of calculations involved, had they been done by hand, _____ all practical value by the time they were finished.
| A．could lose | B．would have lost | C．might lose | D．ought to have lost |
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