Teenagers who don’t get enough rest have more learning, health, behavior and mood problems than students who get at least nine h

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问题 Teenagers who don’t get enough rest have more learning, health, behavior and mood problems than students who get at least nine hours a night.

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答案休息不足的青少年比那些每晚至少睡9个小时的学生有更多的学习、健康、行为及情绪问题。

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