my life style 的作文
题目
my life style 的作文
答案
I am sure everyone likes to talk about his or her lifestyle.Especially these things you like to do after school or on weekends.Some of my friends like going to movies and some like talking to friends ...
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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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