单项选择题
The millions of calculations involved, ______ by hand, would have lost all practical value by the time they were finished.
A. had they been done
B. having been done
C. they had been done
D. they were done
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单项选择题
What does the speaker think future advertisers should do
A.Be more careful about what they advertise.
B.Spend less money on advertising.
C.Advertise more for their products.
D.Use new advertising techniques.
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单项选择题
What does Hilda say is most important about a bike
A.Price.
B.Condition.
C.Brand.
D.Comfort.
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