单项选择题

China started in nuclear power industry only in recent years, and should ______ no time in catching up.

A．delay
B．lose
C．lag
D．lessen
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单项选择题
If you ______ our teacher, what would you tell her
A．are to see
B．must see
C．will be going to see
D．were to see
单项选择题
Before 8,000 B.C. wheat did not grow as prolifically ______ it does today.
A．like
B．as
C．for
D．than
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