who are your teacher? 修改错误 I have three new teacher 修改错误 NO, she is 修改错误
题目
who are your teacher? 修改错误 I have three new teacher 修改错误 NO, she is 修改错误
还有个 she very kind.修改错误
答案
who is your teacher
I have three new teachers
NO,she is not
she is very kind
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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