单项选择题

The brain drain of experts away from developing countries will greatly influence these coun tries' development of sophisticated industry.（）

A．principal
B．advanced
C．primitive
D．collective

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单项选择题
Women are assumed to be weaker, slower and less skilled than men.（）

A．supposed
B．estimated
C．branded
D．suspected
单项选择题
He keeps on saying, I'm broke . What does he mean （） that.

A．in
B．by
C．on
D．with
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