单项选择题

Color-blind people often find it difficult to ___________ between red and green.

A．identify
B．distinguish
C．separate
D．compare
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单项选择题
Many people were deprived ___________ food and clothing in order to supply the growing armies.
A．for
B．of
C．by
D．from
单项选择题
According to the urban construction program old buildings that are ___________ should be pulled down.
A．under repair
B．out of repair
C．in repair
D．beyond repair
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