单项选择题

SECTION A CONVERSATIONS In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now listen to the conversation. What is an extended family according to the woman

A．A family with father, mother and the children.
B．A family with a lot of friends dropping in.
C．A family with elderly and unmarried relatives.
D．A family with in-laws and married siblings.

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单项选择题

What was the woman doing at lunchtime

A．Giving a lecture.
B．Discussing political science.
C．Working on a science problem.
D．Reading books in a library.

问答题

[听力原文]How and Why We SleepIt’s apparent that everyone needs to sleep. However, most people rarely think about how and why they sleep. We know that if we sleep well, we feel rested. If we don’t sleep enough, we often feel tired and irritable. It seems there are two purposes of sleep: physical rest and emotional and psychological rest. We need to rest our bodies and our minds, both of which are important in order for us to be healthy. Each night we alternate between two kinds of sleep: active sleep and passive sleep. The passive sleep gives our body the rest and prepares us for active sleep, in which dreaming occurs. Throughout the night, people alternate between passive and active sleep. The brain rests, then it becomes active, then dreaming occurs. The cycle is repeated several times throughout the night. During eight hours of sleep, people dream for a total of one and half hours on the average.

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