剑桥英语3级下册(白雪公主的故事英文版)
题目
剑桥英语3级下册(白雪公主的故事英文版)
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白雪公主的英文版,看看哦!Once there was a Queen.She was sitting at the There was snow outside in the garden-snow on the hill and in the lane,snow on the huts and on the trees:all things were white with...
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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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