单项选择题

In times of war, we must take precautions against acts of ______ as well as of direct violence.

A．viciousness
B．sabotage
C．pretext
D．hatefulness
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单项选择题
The spring floods had washed away the bridge, we were forced to take a ______ route.
A．circular
B．fantastic
C．damp
D．circuitous
单项选择题
He planned to go to France to ______ his art of painting.
A．cut out
B．come by
C．brush up
D．make up
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