There axe in general two opinions about what we experience in a dream: Based on what is discussed in this writing, an adult may

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问题 There axe in general two opinions about what we experience in a dream:
Based on what is discussed in this writing, an adult may have at most about ______ of the time of his or her sleep dreaming.

选项 A、90%
B、50%
C、25%
D、20%

答案C

解析 第二段中说一般人睡眠时有四到五个REM阶段,这几个阶段约占整个睡眠时间的 25%。由于梦通常在REM阶段发生,所以睡眠中可能最多只有25%的时间在做梦。
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