单项选择题

A drug that is ______ reaches the brain faster than if it is smoked or sniffed.

A．ejected
B．poked
C．stung
D．injected
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单项选择题
France's ______ of nuclear testing in the South Pacific last month triggered political debates and mass demonstrations.
A．assumption
B．consumption
C．presumption
D．resumption
单项选择题
Other spots are characterized by their ability to modify or ______ sound, even to the point of audio saturation.
A．intensify
B．amplify
C．enlarge
D．reinforce
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