We met at the wrong time,but separated at the right time.The most urgent is to take the most beautif
题目
We met at the wrong time,but separated at the right time.The most urgent is to take the most beautiful scenery,the deepest wound was the most real emotions.的意思是什么?
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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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