补全对话 根据上下文把下面的对话补充完整。（共5个小题，每小题2分）

A: What are you going to do after the exams?

B   小题1:  . Do you have any good ideas?

A: Yes l went to relax myself .So I want to go on a trip

6: Sounds great！小题2: ?

A: I’d like to go somewhere interesting and exciting.

6: There is a new zoo in Changsha   小题3:  ?

A: No, I haven’t.What about you?

B: 小题4:  . But my cousin went there last week. He toldmepeople could watchthe animals there in a more natural environment.

A Really? That sounds interesting.Let’s go to the zoo together B: OK. We can go there by bus tomorrow.

A 小题5:  ? It’s not too far from here. And riding a bike is a kind of good exercise .

B. OK I can’t wait. 

在虚存系统中，选择最近一段时间最久没有被访问的页面先调出的页面调度算法是（ ）

A．最佳调度算法(OPT)

B．最近最久未使用调度算法(LRU)

C．最近最不常用调度算法(LFU)

D．先进先出调度算法(FIFO)