on the weather in shanghai
题目
on the weather in shanghai
答案
：How are you,xxx?
:Fine.The weather is so nice today,right?
:Yeah.Where are you going now?
:Shopping to the xxx.Do you want to go with me?
:Mum,sorry,I have to buy some books.
:Ok,well,next time!Bye now.
:Byebye.See you.
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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