求2007年北京市中考英语完型翻译
题目
求2007年北京市中考英语完型翻译
答案
Jessie was driving home happily when a truck went past her car. The driver was moving much too fast. When Jessie neared her exit, she saw something and stopped her car to the right of the highway. An ...
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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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