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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杜耀豪的母亲与兄弟姊妹的合影，摄于1954年。（受访者供图）

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小麦变身记（三餐四季），详情可参考搜狗输入法2026

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