单项选择题

A compound consists of atoms ______ different chemical properties.

A．of
B．by
C．for
D．with
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单项选择题
No one will go out in the downpour, ______
A．will he
B．won't he
C．will they
D．won't they
单项选择题
79（）

A．Out of
B．Of
C．To
D．Into
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