英语作文,The performance of Chinese and American students in their studies 大约200字
题目
英语作文,The performance of Chinese and American students in their studies 大约200字
答案
Many of us are aware of the better performance of the chinese students on their studies as compared with the americanstudents.However,do you know what are the reasons behind this?Yes,to have performed...
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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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