求一篇介绍宿舍及室友的英语作文
题目
求一篇介绍宿舍及室友的英语作文
大神来吧
答案
For most university students,dormitory life is a new experience.Most students have never lived far away from their parents before coming to university.They have always had their parents to depend on f...
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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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