本人急需初1的2人英语对话要简单的 有的9999
题目
本人急需初1的2人英语对话要简单的 有的9999
有的 大侠 见义勇为下 .
答案
旁白：Once upon a time,there was a queen.She had a pretty daughter named Snow White.Soon after the child was born,the queen died.The queen married another queen.The stepmother was very jealous.She dre...
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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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