In Dement's experiment, deprived the participant of REM or dream sleep for four nights.
A.
正确
B.
错误
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【单选题】听力原文:M: If the traffic was not so bad, I could have been home by 6 o'clock. W: What a pity! Michael was here to see you. What happened to the man?
【单选题】听力原文:M: If the traffic hadn't been so busy, I could have been home by 6:00. W: What a pity! John was here to see you. Q: What happened to the man? (17)