talk about my family and my study 英语作文 50字
题目
talk about my family and my study 英语作文 50字
答案
I'am glad to tell you that i'm living in an harmonious and happy family.there are four peoples my parents and my brother and me,and i love them so as they love me.thanks!
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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