can i ask you a question?
题目
can i ask you a question?
it serves you right,if you find it impossible to escape from some idle or inquisitive chatterbox,or from someone who wants something for nothing.还有“wants something for nothing
答案
你活该,如果你认为不可能逃避某些闲置或好奇的喋喋不休之前,还是来自有人想不劳而获.
不劳而获
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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