结构有点混乱看不懂.
题目
结构有点混乱看不懂.
the most upscale hotel may attract customers with the latest trend in holiday packages abut will not have their loyalty if Bell Service wasn't notified to take down luggage by the Room Attendant in Housekeeping Department.
答案
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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