简单初一英语编对话100字
题目
简单初一英语编对话100字
答案
A:helloB:hiA:what did you do on your vacationB:I went to the mountions.how about you A:oh,I didn't go every places .I stayed at home and watched tv.B:so you were boring in your vacation.A:yeah.B...
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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