单项选择题

The amount of sleep required may ______.

A．tire an individual mind
B．help infants grow older
C．apply pressure on an executive
D．depend on an individual age
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单项选择题
If a person is not allowed to follow his own sleep routine, he will probably ______.
A．never fall asleep
B．not sleep well
C．lose his memory
D．begin to daydream
单项选择题
From the amount of sleep Napoleon, Edison, and Darwin required, we can conclude ______.
A．that they were famous
B．that they were executives
C．that they were intelligent
D．None of the above
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