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要求：1. 表达清楚，语句通顺，意思连贯；
2. 不得使用真实的地名、校名和姓名等；
3. 词数：80左右。文章的开头与结尾部分已给出，不计入总词数。
部分参考词汇：熬夜stay up；垃圾食品junk food；均衡饮食keep a balanced diet；按时饮食have meals regularly
How to Keep Healthy
Nowadays, more and more people know the importance of keeping healthy……
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___________________________________________________________________________________________________________________. In this way, we can enjoy a happy life.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
