单项选择题

Scientists predict that the world’s known oil resources will _____ early in the next century.

A．run off
B．run out
C．run up
D．run over
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单项选择题
The environmental costs were regarded more as temporary inconveniences than as _____ liability.
A．imaginative
B． peculiar
C．persistent
D．original
单项选择题
According to government mandate in the Lion City, tipping is not ______.
A．admitted
B．remitted
C．permitted
D．emitted
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