odd positions: 9,7,5,3,1 sum to 25;
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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回归到中国品牌来说，选择接盘日本彩电巨头，本身就是为了着眼于国际市场，目前在全球范围内虽然中国品牌如今增速凶猛，但还同样面临着三星这样的强劲对手，三星目前在全球70多个国家和地区电视销量排名第一，品牌美誉度广泛，即便退出液晶面板领域，仍掌控芯片、偏光片等上游核心环节，这也让其在高端市场底气充足。
Elderly people with frailty, which affects up to one-quarter of over-50s, increased their endurance after a single dose of stem cells.