My friend and I 英语作文 翻译
题目
My friend and I 英语作文 翻译
答案
My friend's name is ______.She is my best friend and when I need her she is always there.Once,I remember that I got a very horrible grade and I started crying,but she comforted me by giving me a hug a...
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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