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

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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.

单项选择题

The author advises parents ______.

A．to take medicines before children
B．to avoid taking drags in front of children
C．to throw away old medicines
D．to teach children about medicines