单项选择题

A．Anesthetics.
B．Pulled teeth.
C．Home service.
D．Pain-free service.
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单项选择题
A．Asia.B．Africa.C．America.D．Europe.
A．Asia.
B．Africa.
C．America.
D．Europe.
单项选择题
A．He ran into a tree.B．He ran into truck.C．He was driving too fast.D．He hurt his back and his head.
A．He ran into a tree.
B．He ran into truck.
C．He was driving too fast.
D．He hurt his back and his head.
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