uncle tom lived with seven sons.he sent one to buy a book,two to catch fish,three to go hunting in
题目
uncle tom lived with seven sons.he sent one to buy a book,two to catch fish,three to go hunting in
答案
貌似文不完整啊…翻译：汤姆叔叔有七个儿子.他让一个儿子去买书,两个儿子去抓鱼,三个儿子去打猎…
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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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