单项选择题

Which of the following can’t doctors do

A．It is difficult to find out how the brain works.
B．After an arm is cut off, the doctors cannot put it back.
C．We should stop studying the brain because it is so dangerous.
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单项选择题
A．789-3545.B．987-3554.C．798-3455.
A．789-3545.
B．987-3554.
C．798-3455.
单项选择题
A．There is no elevator in the famous Statue of Liberty.B．There are elevators but they don’t reach the top of it.C．There are elevators and they reach the crown.
A．There is no elevator in the famous Statue of Liberty.
B．There are elevators but they don’t reach the top of it.
C．There are elevators and they reach the crown.
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