单项选择题

There is an abundant supply of cheap labor in this country.

A．a steady
B．a plentiful
C．an extra
D．a stable
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单项选择题
Cement was seldom used in building the Middle Ages.
A．crudely
B．rarely
C．originally
D．occasionally
单项选择题
The govemment is debating the education laws.
A．discussing
B．defeating
C．delaying
D．declining
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