单项选择题

The general director of the project ordered that the work ________at once.

A．be started
B．was started
C．had started
D．started
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单项选择题
All ________knowledge originates in direct experience.
A．generous
B．genuine
C．genius
D．gentle
单项选择题
He________ at his watch and then looked at the sky.
A．scanned
B．skimmed
C．glanced
D．glimpsed
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