关于美国肯尼迪图书馆的英文介绍,
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关于美国肯尼迪图书馆的英文介绍,
答案
The John F.Kennedy Presidential Library and Museum is dedicated to the memory of our nation's thirty-fifth president and to all those who through the art of politics seek a new and better world.Locate...
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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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