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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It's a job that can only be done under the cover of darkness.

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"And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day."

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长期资产进项税额抵扣的具体操作办法,由国务院财政、税务主管部门制定。