梦想家园(现在时态) 英语小作文 急
题目
梦想家园(现在时态) 英语小作文 急
答案
My dream home is very big .It has three floors.On the ground floor,there are two sitting-rooms,two kitchens and a very large sport room.I can play ball with my friends in the sport room.There are fift...
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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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