单项选择题

The writer implies that ______.

A．sleep is important for good mental and physical health
B．a light sleep is as restful as a deep sleep
C．memory is improved during sleep
D．sleep is relatively unimportant for human beings

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热门试题

单项选择题

From the amount of sleep Napoleon, Edison, and Darwin required, we can concluded ______.

A．that they were famous
B．that they were executives
C．that they were intelligent
D．None of the above

单项选择题

If injured, the fireman will ______.

A．be treated immediately with the computer's help
B．hardly get proper treatment with the help of the information given by the center
C．appreciate the computer's help very much
D．ask doctors and nurses for help