This is the man who had not known if he was Scrooge and asked for money for the poor.
题目
This is the man who had not known if he was Scrooge and asked for money for the poor.
答案
就是这个人不知道他是个吝啬鬼,还向他为穷人筹款.
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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