初二英语作文：MY FRIEND JACK
题目
初二英语作文：MY FRIEND JACK
答案
MY FRIEND JACKI have a good friend .His name is Jack.He is clever and hard-working.He always helps me .I am glad to play and study with him.I get a lot from him .I hope to be good friends with him for...
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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