怎么用英语来描述我自己的房间
题目
怎么用英语来描述我自己的房间
答案
I have a lovely bedroom. There is a bed in my bedroom. There is a desk near my bed. There is a pink doll on my bed. I sleep with it every night. There is a big window in my bedroom. The yellow lamp is...
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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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