帮忙写一篇英语作文,有要求.
题目
帮忙写一篇英语作文,有要求.
介绍你的朋友,他的情况如下：男孩,13岁,法国人,棕色头发,大鼻子,大眼睛,个高且瘦,想他的父亲等.约五十个单词.
答案
This is my good friend,Henry.He is a boy who comes from France.He is at the age of 13.He has brown hair.He has a big nose.His eyes are big.And he is tall and thin.He looks like his father.We're good friends.
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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