单项选择题

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

<上一题目录下一题>

热门试题

单项选择题

The new type of machine ______ the year after next.

A. is going to being turn out
B. is going to have turned out
C. is going to turn out

D. is going to be turned out

单项选择题

As early as 1647 Ohio made a decision that free, tax-supported schools must be established in every town ______ 50 households or more.

A. having

B. to have
C. to have had

D. having had

相关试题