I want to improve my oral English,can you tell me your good method?
题目
I want to improve my oral English,can you tell me your good method?
答案
First, i want to tell you rome wasn't bulit in a day. And then, i'll show you another saying: The way to learn a language is to practice speaking it as often as possible.Practice makes perfect. Prac...
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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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