as is known to us all造句..最好是长一点的...
题目
as is known to us all造句..最好是长一点的...
答案
As is known to us all a man knows his companion in a long journey and a little inn.
众所周知：路遥知马力,日久见人心.
比楼上长那么一点儿,
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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