求写英语作文 名字为 My Ideal Room
题目
求写英语作文 名字为 My Ideal Room
答案
My bedroom isn't big but it is always clean and tidy. Of course there is a bed in it. There are two pictures of movie stars above the bed.Next to the bed there is a desk and a chair. I often read book...
举一反三
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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