单项选择题

All gases and most liquids and solids expand when ______ .

A．heated
B．heating
C．being heating
D．heat
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单项选择题
The case is ______ anyone can imagine.
A．a great deal more complicated than
B．a lot of more complicated than
C．as just complicated as
D．far much complicated than
单项选择题
He never hesitates to make ______ criticisms ______ are considered helpful to others.
A．so…that
B．so…as
C．such…that
D．such…as
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