单项选择题


A．up
B．on
C．off
D．ont
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单项选择题
A．thatB．ifC．whatD．whether
A．that
B．if
C．what
D．whether
单项选择题
How does aspirin reduce fever
A．It slows down human reactions to fever.
B．It prevents the formation of the fever-related chemical reactions.
C．It interferes with the formation of some acids.
D．It makes human body unconscious of pains.
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