单项选择题

All gases and most liquid and solids expand _______ heated.

A．in
B．how
C．when
D．about
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单项选择题
On January 1st many people make a New Year _______.
A．intention
B．determination
C．dedication
D．resolution
单项选择题
A．atmosphereB．gasC．aerialD．liquid
A．atmosphere
B．gas
C．aerial
D．liquid
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