the fox and the cat 2是2,翻译一篇文章
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the fox and the cat 2是2,翻译一篇文章
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It happened that the cat met Mr.Fox in the woods.She thought,"He isintelligent and well experienced,and is highly regarded in the world," soshe spoke to him in a friendly manner,"Good-day,my dear Mr.F...
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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