用英语介绍你的房间
题目
用英语介绍你的房间
答案
I have a neat and clean room where i can do everything i like.There is a comfortable bed beside my table.I have many interesting book in the shelf.I like my room so i often stay my room to do somethin...
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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