写雨的短文
题目
写雨的短文
答案
I am fond of rain , delighted its water-like cleaning up is pure, say that the same floating is distant and indistinct, fog-like dim moonlight. I also like to be burning the fine rain dusk , one's own...
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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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