pumpkin eater是什么意思?
题目
pumpkin eater是什么意思?
答案
英国的一首童谣： Peter, Peter, pumpkin eater, Had a wife and couldn't keep her; He put her in a pumpkin shell, And then he kept her very well. Peter, Peter, pumpkin eater, Had another, and...
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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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