I want to find an English-Speaking friend as my english speaking&writing teacher
题目
I want to find an English-Speaking friend as my english speaking&writing teacher
I'am a Chinese ,and working in Shanghai as an engineer for Sun in which is mostly use us-English on work .I want to make friends with someone who comes from an English-Speaking country.So i need to improve my english speaking,writing and reading skills.Someone could help me
答案
I'm not sure...I was born in the US and have lived there for nine years but I'm twelve...English is my native language.
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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