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Unit 21 Human Biology
单词注释
导读诱思
健康是人类永恒话题,人类历史就是与疾病抗争历史。疾病威胁着人类生存与发展。怎样预防疾病、保持健康是每个人必修课。Everyone wants to have a healthy lifestyle if they can afford it.There’s no step-by-step guide to keeping healthy,but we can try the following tips.Eat healthilyAs the saying goes,“We are what we eat.” Think of this whenever you feel like pigging out.We need to have a balance of fruit,vegetables and meat.
Exercise regularlyPhysical activity might be hard especially when we lead busy lives,but we should make a ...
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