典范英语6的1海象参加表演的梗概
题目
典范英语6的1海象参加表演的梗概
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North Pole was going to be a show and anyone could be in it. Arctic Fox are going to do skating ,andPolar Bear are going to do tumbling. Seal will sing.Whale are going to do diving .But Walrus was...
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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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