单项选择题

A．Its drab color.
B．A scarcity of it.
C．Its stale smell.
D．A problem in storing it.
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Fever is a _____________ to infection, and no major problems generally come from fever itself.
单项选择题
A．Art history.B．Elementary education.C．American literature.D．Psychology.
A．Art history.
B．Elementary education.
C．American literature.
D．Psychology.
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