Rick,on weekend,my friend,I,often ,go to a movie ,with
题目
Rick,on weekend,my friend,I,often ,go to a movie ,with
2、Beijing Opera,I ,look at ,stay ,and ,pic-tures ,of ,at home
3、Chinese history ,learn,I,about,can,a lot
答案
I often go to a movie with my friend Rick on weekend
举一反三
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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