英语作文 游泳
题目
英语作文 游泳
一篇关于暑假学游泳的作文.词数100左右.
答案
Today is Sunday. This morning, I went to the swimming pool with my mum.I decided to learn swimming today.At first, I could not swim at all. My mother was very patient. She taught me how to swim.Three ...
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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