求 新概念英语第二册58课课文摘要
题目
求 新概念英语第二册58课课文摘要
答案
课文内容：The tiny village of Frinley is said to possess a 'cursed tree'.Because the tree was mentioned in a newspaper,the number of visitors to Frinley has now increased.The tree was planted near the...
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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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