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.

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单项选择题According to the last paragraph, ______.

A．the women could perceive colors when she read words
B．Russian words may be dull and hard to remember as they are black and brown
C．simple words are not colorful
D．German may be easy to remember as they are with strange colors

单项选择题Who was supposed to be the world' s champion sleepwalker

A．The man walked sixteen miles along a dangerous road.
B．The boy walked five hours in his sleep.
C．The student habitually walked to the Iowa River and swam in his sleep.
D．The man danced a minuet in his sleep.

单项选择题What does the phrase taken with a barrel of salt mean at end of the second paragraph

A．Inconceivable.
B．Unbelievable.
C．Suspected.
D．Implausibl

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 above

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