写一篇英语作文.Rose,an American girl,is going to visite China.Please write an e-mail to
题目
写一篇英语作文.Rose,an American girl,is going to visite China.Please write an e-mail to
tell her something about eating habits and how to eat heathily in China.
要求：一百个词左右.
答案
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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