单项选择题

When we visited the country, our principal impression was one of poverty and hardship.

A．main
B．central
C．unforgettable
D．strong
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单项选择题
Gambling is lawful in this state.
A．legal
B．irresistible
C．enjoyable
D．profitable
单项选择题
They have been tightening their belts for months, adapting themselves to a war economy.
A．modifying
B．adopting
C．arranging
D．adjusting
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