there is no royad to learning the secret success is consistency to purpose
题目
there is no royad to learning the secret success is consistency to purpose
答案
：today is a new day your tomorrows are as bright as you want to make them There is no reason to carry the darkness of the past with you into today Today is a wonderful new experience Full of every po...
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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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