单项选择题

You may conclude from this article that it is _______ using machines to make a person breathe for years if his brain is dead.

A．a clever way
B．a wise way
C．no use
D．quite useful
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单项选择题
When a person's brain is dead, he _____.
A．will never wake up again
B．maybe wakes up again
C．will wake up again by using a machine
D．sometimes wakes up
单项选择题
Which of the following is true
A．An unconscious person knows he must die.
B．Brain death isn't a real death.
C．An unconscious person cannot realize he must die.
D．Brain death is a real death.
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