I have been to.
题目
I have been to.
答案
I have been to Beijing
last year,i went to beijing with my parents.i can remember many things about beijing.
first,wo went to the great wall.it was so wonderful.it is like a drogan .And it goes across the east and west.then wo went to gugong.it has a good view.When we left beijing,i was very excitied .beijing is very beautiful.
I like beijing very much.Have you been to beijing?
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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