题目内容
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[主观题]
Which of the following statements is true according to the passive？A．We have about the sam
Which of the following statements is true according to the passive？
A．We have about the same amount of passive sleep and active sleep.
B．We usually have less passive sleep than active sleep.
C．Passive sleep is often followed by active sleep.
D．Passive sleep comes after active sleep.
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