I am a good boy.I can speak English and a little Chinese
题目
I am a good boy.I can speak English and a little Chinese
I live in a big house.Iwant to lrean Chinese and very good!Can you help me
答案
If you tell me how to learn Englishi.I can tell you how to learn Chinese.
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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