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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问答题
Fat on human beings is distributed in different ways. Some fat people have a large stomach and no waistline --which makes them look round, rather like apples. Others are fatter below the waist, which makes them appear pear-shaped. There arc two types of fat: external fat and internal fat. Doctors, who have been examining the relationship between health and fatness have found that the ’ pears’ have less internal fat, but the ’ apples’ have more internal fat than external fat. This seems to be what causes the health problems. The best treatment for fatness is to reduce the internal fat. But unfortunately it seems that dieting simply makes an apple-shaped person into a smaller apple and a pear-shaped person into a smaller pear. l At the moment there is no known way of reducing the internal rather than external fat.
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
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