Look!How hard the people are working.对还是Look!How hard the people working are
题目
Look!How hard the people are working.对还是Look!How hard the people working are
答案
不要再问个不停了!肯定是：“Look!How hard the people are working!”正确!
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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