《Traffic accidents》英语作文
题目
《Traffic accidents》英语作文
答案
How to reduce traffic accidentsRecently,with more and more people owning private cars,more traffic accident are reported.As we all know ,the traffic accidents have been the social heated topic becasue...
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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