英语翻译
题目
英语翻译
Paris has a beautiful name,the City of Lights.Do you know what it means Many beautiful buildings are lighted at night .The streets are very bright .When you walk in Paris,you must not turn on your headlights of the car after dark.Paris is full of life all day and all night.But this is not the only reason for its beautiful name.Paris is the center of science and art.Many scientists come to study here.For this reason,too,people call it the City of Lights.
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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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