单项选择题


A．before
B．after
C．long after
D．before long
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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
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
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