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The millions of calculations involved, had they been done by hand, all practical

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The millions of calculations involved, had they been done by hand, all practical

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

[]A．

had lost

B．

would have lost

C．

would lose

D．

should have lost

试题答案

答案：B

标签：beentheydonehandby

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