急求一篇英语作文：A person I will never forget 80字左右 要写关于朋友的
题目
急求一篇英语作文：A person I will never forget 80字左右 要写关于朋友的
答案
A Person I Will Never ForgetMary is the person I will never forget.She was once my classmate.She was a good person.Though she was sometimes unpleasing,she was helpful and warmhearted.She learnt well,b...
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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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