谁有睡美人的英语剧本啊!单词尽量简单点
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谁有睡美人的英语剧本啊!单词尽量简单点
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A long time ago and far away there lived a King and a Queen .They were very happy, for their first child, a girl, had been born. We must have a grand christening for her, said the King , who was delig...
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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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