单项选择题

We learned from the show that some insects could be used as medicine, ______ ants and bees.

A．in case of
B．such as
C．just like
D．as an example
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单项选择题
Although this disease is incurable at present, they keep expecting ______.
A．magic
B．miracles
C．wonders
D．wisdom
单项选择题
They have cooperated so well that they decide to ______ their agreement for another five years.
A．renew
B．recall
C．recover
D．refine
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