单项选择题

If you rub certain things together, their surfaces become ______ static electricity.

A．caught up with
B．charged with
C．kept up with
D．put up with
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单项选择题
The doctors ______ the medicines to the people in the flood area.
A．distributed
B．allotted
C．spread
D．scattered
单项选择题
In Nigeria, rules have been handed down orally from generation to generation and now form the country's ______ law.
A．traditional
B．conventional
C．customary
D．conservative
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