单项选择题

A．9.
B．10.
C．11.
D．12.
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单项选择题
A．Hesitate to take any pills.B．Take two pills.C．Take eight pills.D．Take the doctor’s advice.
A．Hesitate to take any pills.
B．Take two pills.
C．Take eight pills.
D．Take the doctor’s advice.
单项选择题
A．To keep the heat inside.B．To prevent insects from escaping.C．To reduce the risk of fire.D．To keep the wood dry.
A．To keep the heat inside.
B．To prevent insects from escaping.
C．To reduce the risk of fire.
D．To keep the wood dry.
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