单项选择题

Excessive use of some pain-killers can cause ______.

A．heart damage
B．brain damage
C．muscle damage
D．kidney damage
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单项选择题
From the passage, we can infer that ______.
A．alcohol is good
B．drugs should be bought and taken by prescription
C．people should take more drugs to cultivate a drug culture
D．aspirin is not considered a drug
单项选择题
What are side effects according to the passage
A．Withdrawal symptoms.
B．Overdoses.
C．Certain effects other than intended ones.
D．Sidewalk effects.
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