获奖英语短文 Hao to be a good student(有中文翻译)
题目
获奖英语短文 Hao to be a good student(有中文翻译)
答案
It seems that Li Hao has changed a lot.You may ask,"Why he changed a lot."The answer to the question is that our class have a activity Learn to Be Your Star.What is he changed? first,he do things more...
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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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