有关What did you do on may day的作文带翻译
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有关What did you do on may day的作文带翻译
答案
May first is a Sunday this year.And it is the Labor’s Day.My mother said to me :“Open your eyes!And look out of the window.What a fine day!Let’s go to park,” So my mother,my classmate and I went t...
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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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