介绍罗马的英文文章
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介绍罗马的英文文章
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Near the banks of the Tiber River,2,700 years ago on seven hills,the foundation of Rome was laid.It is one of the most ancient cities in Europe.Since then,it has been continuously inhabited and has gr...
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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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