英语作文 How to stay healthy 50字左右 分三段
题目
英语作文 How to stay healthy 50字左右 分三段
答案
We all hope to be healthy.How to stay healthy?
First,we need to keep strong body.We need to exercise.Second,we need good eating.We should eat more fruits and vegetables.Third,we must maintain[保持] adequate[充足的] sleep.
This is a way to stay healthy.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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