题目

听下面一段较长对话，回答以下小题。【1】What does the woman ask the man to do?A. Throw away her sofa.B. Clean her living room.C. Help her move something.【2】Why is Jack giving the woman his sofa?A. It’s old and dirty.B. He’s moving abroad.C. His new place is too small.【3】How does the man know Jack?A. They’re neighbors.B. They’re co-workers.C. They’re classmates.【4】What is the man hoping will happen?A. He’ll get a new truck.B. Jack will give him some furniture.C. He’ll find a place with a great view.在电脑里先输入一个数x，它会按给定的指令F进行如下运算：如果x是偶数，就把它除以2；如果x奇数，就把它加上3，运算结果记为F（x）．如F（16）-8，F（11）-14，当F{F[F（x）]}-27，则原来输入的数x是216或105或102216或105或102．