准确问题(包括文章了)
题目
准确问题(包括文章了)
Tom,Sam,Jim and Jack
Tom,Sam,Jim and Jack live in a building of four floors.They live on different floors.They have different jobs—an engineer,a worker,a teacher and a doctor.Tom lives above Sam,but blow Jim.Jack lives on the third floor.The doctor lives above the teacher,but below the worker.The engineer lives on the ground floor.What are their jobs?Which floor does each of them live on?
1.What does Sam do
2.Which floor does Jim live on?
3.What does Jack do
4.Which floor does Tom live on?
答案
1.Sam is an engineer.
2.Jim lives on the fourth floor
3.Jack is a doctor
4.Tom lives on the second floor
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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