work out how much money you need and take enough money with you
题目
work out how much money you need and take enough money with you
答案
算下你需要多少钱,身上要带足够多 的钱
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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