单项选择题

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单项选择题
When does dreaming occur
A．During passive sleep.
B．During active sleep
C．Between passive sleep and active sleep
D．After active sleep.
单项选择题
Question 6 is based on the following news. At the end of the news item , you will be given 10 seconds to answer the question. Now listen to the news.
Question 6 is based on the following news. At the end of the news item , you will be given 10 seconds to answer the question. Now listen to the news.
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