21 年前
视频简介
偏僻的半山村住着九岁的丁保健和他多病的母亲。一天，保健的母亲死了，村长决定让保健吃百家饭。不久村长被告知保健外出打工的父亲死于艾滋病，并要求他保密。一次记者的采访捅出了保健的病情，村民拒绝保健和他们的孩子一起上学。上级领导要来检查工作，为了应付检查，村长找到村里的闲人老赵先给保健代几天课。谁知领导不来了，可这仅有一老一少的两个人的教室却没有停课……。NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One ...。
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