用 School Rules写篇英语作文
题目
用 School Rules写篇英语作文
答案
Our school has many rules.We have to dress uniform everyday,we can't eat in the library and class,and we can't talk in class,we must finish our homework after school,we should talk in a polite way,we ...
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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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