英语作文falure is the mother of sliccess 100子内
题目
英语作文falure is the mother of sliccess 100子内
答案
Falure is the Mother of SuccessThere is an old proverb,it says "Falure is the Mother of Success".It means that when you fail in doing something,you can achieve it at the end.There are many examples of...
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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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