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.

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单项选择题

Dale Jorgenson points out that the 2.78 grow rate will be continued in the next years.

A．2 years
B．10 years
C．20 years
D．5 years

单项选择题

Whom does the provision intend to sell the wild horses for

A．federal government
B．the horse-lovers
C．the people who kill the wild horse
D．the native people