It's clear that everyone needs to sleep. Most people seldom {#blank#}1{#/blank#}．how and why they sleep, however. We know that if we sleep well, we feel rested. If we don't sleep enough , we often{#blank#}2{#/blank#}.

    It seems there are two purposes of sleep: physical rest and mental （精神的）rest. We need to rest our bodies and minds. Both are important in order {#blank#}3{#/blank#}. Each night we change between two kinds of sleep: active sleep and passive sleep. The passive sleep gives our body the rest that is needed and prepares us for active sleep, in which dreams occur（发生）.

    people change between passive and active sleep {#blank#}4{#/blank#}. The brain rests, then it becomes active, then dreaming occurs. The {#blank#}5{#/blank#}is repeated. This cycle is repeated several times. During eight hours of sleep, people dream for a total of one and half hours.

A: Hey, Ann, long time no see. How is everything going?

B: Hi, John. Not bad. How are you today?

A: Fine, thanks. {#blank#}1{#/blank#} are you going?

B: I'm going to the library to return some books.

A: I see. By the way, {#blank#}2{#/blank#} to take your umbrella with you. The recent weather is quite strange.

B: Right, thank you. I will take it. I hear that it's going to show {#blank#}3{#/blank#} tonight.

A: Oh, my god! Then it will be quite {#blank#}4{#/blank#}.

B. We need to wear more clothes. And we can make {#blank#}5{#/blank#}.

A: Yes, it's interesting.

—No. I don't know them.

    Tom is an American boy. He's tall and healthy. He likes {#blank#}1{#/blank#} sports very much. {#blank#}2{#/blank#} is his favorite. so he often watches basketball games on TV. He thinks the games are great. Tom often plays basketball with his friends on {#blank#}3{#/blank#}. One day, he went to the {#blank#}4{#/blank#} with his friends. They had a basketball game with the boys in No. 2 Middle School, They played very well, but at last they lost the game. They felt very {#blank#}5{#/blank#} After the game, Tom sat down and {#blank#}6{#/blank#} with his friends. Then, a man walked to them. Wow! The man is a great basketball {#blank#}7{#/blank#} in the city. Many people know him. He's {#blank#}8{#/blank#} with his students. Some of the basketball players in CBA are his students. The man said Tom played very well. He asked him to {#blank#}9{#/blank#} the city basketball club, It's really a piece of good news for Tom. He will make new {#blank#}10{#/blank#} and become a good player in the club.