给我一个介绍全家福的英语作文,我急用!
题目
给我一个介绍全家福的英语作文,我急用!
答案
一张全家福(A photo of my family)Look at this photo.This is a nice picture of my family.There are five people on it.I am in the middle.I’m laughing.It looks that I am very happy.There’re some pretty ...
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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