even children and old people can drive them to schools or parks 同一句
题目
even children and old people can drive them to schools or parks 同一句
答案
They can be even driven by children and old people to schools or parks.
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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