Where is the bus stop?The bus stop is over there.Look!It is across from the post office.
题目
Where is the bus stop?The bus stop is over there.Look!It is across from the post office.
()?It is a pleasure.就这样了
答案
我十分确定是提印错了,明天问老师也是这样,绝对的.
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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