关于My vacation的作文
题目
关于My vacation的作文
答案
I went to Beijing last vacation.First I went to the Great Wall.It is very long and great.Then I went to a Beijing Hutung.It was interesting and I bought some souvenirs there.I also went to Tian'an Men Square.It's so large.There were lots of people on the square.I took many photos.I had Beijing duck for dinner.It was delicious.
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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