初中英语作文,介绍自己集邮的!50词左右
题目
初中英语作文,介绍自己集邮的!50词左右
答案
I like collecting stamps. I began to collect stamps when I was a child. I thought they were beautiful at that time. Now I can learn more from the stamps. I have a lot of stamps. Some stamps are about history, some are about birds, flowers. Some stamps tell us a story. They are very beautiful.
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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