laws-a-me什么意思
题目
laws-a-me什么意思
He's full of the Old Scratch,but laws-a-me!he's my own dead sister's boy,poor thing,and I ain't got the heart to lash him,somehow.Every time I let him off,my conscience does hurt me so,and every time I hit him my old heart most breaks.,
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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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