求一两篇英语日记,简短,难度普通
题目
求一两篇英语日记,简短,难度普通
答案
Dear boys and girls,
Have you ever found any bad behaviors in our school campus?Some students drop the litter everywhere,that makes our school dirty.Would you mind not litter any more?In the meantime,it is not right for some of the students to have graffiti on the wall.It is also not right to talk dirty and spit on campus.In addition,fighting to each other is strictly forbidden,any one who fights on campus will be punished seriously.
Let's make our school more beautiful and civilized by behaving ourselves in good manners.
The Students' Union
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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