用英语最高级造句四句.
题目
用英语最高级造句四句.
答案
He is tallest boy in his class.
His father is the richest person in his city.
The dog is the nicest one in the neighbourhood.
She is the youngest woman in the family.
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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