听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

单选题 How does the man feel about David's way of sleeping?

A、

[A] It's effective.
B、

[B] It's strange.
C、

[C] It's the best.

【正确答案】 B

【答案解析】[听力原文]6-8 M: How come David is always so full of energy? W: He has a strange but highly effective way of sleeping. M: What is that? W: He takes a short sleep for an hour every six hours and has a total of four hours of sleep each day. M: Where did he get that strange idea? W: He read flora a book which said it was the best way for human beings, and he believed it. M: How many hours do you sleep a day? W: I need at least seven hours. I once tried to follow David's example, but it never worked out for me. M: If I sleep during the day, I can never wake up. W: Not everyone is a David I guess. [精解] 题干问：“这位男士觉得戴维睡觉的方式怎么样?”对话开始男士问：“戴维为什么总是这么精力充沛?”女士回答说：“戴维有一个奇怪而又高效的睡觉方式；他每六个小时睡一次，每次睡一个小时，每天共睡四个小时。”男士又问：“他从哪儿得来的这个奇怪的主意?”从男士第二次的问句可知，男士认为戴维睡觉的方式很奇怪。所以答案选B。

单选题 How many hours does David sleep a day?

A、

[A] Four.
B、

[B] Six.
C、

[C] Seven.

【正确答案】 A

【答案解析】[精解] 题干问：“戴维一天睡几个小时?”从女士的答语可知他一天总共睡四个小时。所以答案选A。

单选题 What does the woman suggest at the end of the talk? [A] People should develop a habit like David's. [B] People need longer hours of sleep. [C] People have different sleeping habits.

【正确答案】 C

【答案解析】[精解] 题干问：“谈话的最后这位女士建议什么?”对话的最后女士说：”我想并不是所有的人都和戴维一样。”言外之意是“人有不同的睡觉方式。”即答案选C。