健康的生活方式 英语作文
题目
健康的生活方式 英语作文
答案
We should try to eat a lor of vegetables,and we should eat fruit and drink milk everyday,we should not drink coffee,of course,everyone loves junk food,because they are delicious,but in fact,they are bad for our health,so we should not eat them often.Oh!and we should exercise everyday.A healthy lifestyle helps us to study better.
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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