英语作文:题目是我在敬老院工作!
题目
英语作文:题目是我在敬老院工作!
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Today my classmates and I went to the Home for the Elderly to have our deepest sympathies with the old by bus at 2'clock p.m..With pleasure,we helped the old clean their clothes and sweep the floor.We...
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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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