单项选择题

Questionsll-14 are based on the following passage. What does not happen in the brain in the active sleep

A．The brain becomes very active.
B．The brain becomes very inactive.
C．The brain temperature rises.
D．The brain blood rises.
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单项选择题
The United Nations' experts are supposed to______.
A．construct strong buildings
B．put forward proposals
C．detect disastrous earthquakes
D．monitor earthquakes
单项选择题
Which of the following CAN NOT be concluded from the passage
A．The number of earthquakes is closely related to depth.
B．Roughly the same number of earthquakes occur each year.
C．Earthquakes are impossible at depths over 460 miles.
D．Earthquakes are most likely to occur near the surfaces.
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