She is the head teacher She is tall ,She is stri
题目
She is the head teacher She is tall ,She is stri
She is the head teacher She is tall ,She is strict
答案
他是老师的头儿,他很高,他很严格
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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