say sorry to your self because you were once tough to yourself for someone.
题目
say sorry to your self because you were once tough to yourself for someone.
答案
对自己说声抱歉吧,因为你曾为了某人让自己吃了苦头
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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