英语作文My class mate 和Ahappy day in Spring Festival
题目
英语作文My class mate 和Ahappy day in Spring Festival
答案
1.My classmate My best friend and also my classmate is xxx.She is fifteen years old with long ang black hair,big and sparkling eyes.She is good at dancing.She says dancing can keep people healthy and ...
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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