My lost sunday英语作文,要附上中文翻译
题目
My lost sunday英语作文,要附上中文翻译
答案
my last sunday.I had a great sunday.In morning,I played soccer with my brother.In the noon,my mother cooked delicous foods.In afternoon,my father took me to the zoo.we saw many animals in there.we had...
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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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