用what how why
题目
用what how why
用what,when,why,how,who,where,作对话
答案
what's your job?
when you comes here?
why not?
how long have you been there?
who is you wife?
where are you from?
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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