单项选择题

22（）

A．easy
B．difficult
C．clean
D．simple

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单项选择题
21（）

A．say
B．mean
C．like
D．have
单项选择题
This year they have produced ______ grain ______ they did last year.
A．as less... as
B．as few... as
C．less... than
D．fewer... than
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