I always think you, without you, I did not eat, sleep well, where you are!
题目
I always think you, without you, I did not eat, sleep well, where you are!
答案
Perhaps this life we will not be able to stay together,never mind shan-his.You're the love of my life,but also my this life eternal!
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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