《我最好的朋友》英语作文
题目
《我最好的朋友》英语作文
答案
My best friends
My best friend are Meimei and Canzhi.Meimei is Chinese.She is twelve years old.She is a good girl.She can speak some languages----Chinese,American,Japanese,Korean.Canzhi is Korean(韩国人）.He is ten years old.He likes playing footballb.He studys very well.So he always gets good marks(分数）.
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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