单项选择题

A．A local anesthetic.
B．A laughing gas.
C．A pain killer.
D．No drug is needed in the case.
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单项选择题
A．Indifferent.B．Surprised.C．Worried.D．Confident.
A．Indifferent.
B．Surprised.
C．Worried.
D．Confident.
填空题
underestimate
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