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Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.
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Materials science
居民委员会应当设立居务公开栏，可以采用现代信息技术进行居务公开。公布的期限不得少于十五日。居民委员会应当保证公布事项的真实性，并接受居民的查询。