单项选择题

It can be inferred from the directions that this medicine ______.

A．helps you to fall asleep quickly
B．may be dangerous to small children
C．cannot be taken if one feels sleepy
D．should not be taken by children under six

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单项选择题

This text is most probably taken from a ______.

A．textbook
B．newsreel
C．doctor's notebook
D．bottle of medicine

单项选择题

How many tablets at most can a person over 12 have in 24 hours

A．Three.
B．Four.
C．Six.
D．Eight.