单项选择题

The writer makes it obvious that______

A．sleepwalkers are often awakened by dangers
B．the underlying cause of sleepwalking is more serious than sleepwalking itself
C．most sleepwalkers are deranged or insane
D．All of the abov

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单项选择题

What is true of sleepwalking according to the passage

A．It is caused by emotional conflict or guilty conscience.
B．It is the acting out of a vivid dream.
C．Somnambulists are asleep during their sleepwalking.
D．It is dangerous to waken a sleepwalker.

单项选择题

Dr. Zelda Teplitz ______.

A．studied sleepwalking for at least ten years.
B．concluded that sleepwalkers are partially asleep in their sensory area.
C．maintained that it is a mistaken belief that sleepwalkers are immune to injury.
D．A and B