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Do you know why you sleep? You may think it’s because you’re tired. Or perhaps you’ve been told sleep is good for you. Yet no one knows exactly why or how people sleep.
Until the early 1950s, most scientists thought the body and brain rested during sleep. Then a scientist watched people sleep. He noticed that during periods of between 5 and 30 minutes each, sleepers’ eyes made rapid movements, as if they were watching something. He called these periods REM sleep, for Rapid Eye Movement. Periods when sleepers’ eyes did not move he called non-REM sleep.
Whenever the scientist woke people during REM sleep, they were having vivid dreams. Measurements showed that sleepers’ pulses(脉搏)went up quickly during REM sleep. Their breathing, heartbeat, and the blood going to the brain also increased. Far from being a time of rest, REM sleep is a time when the body is hard at work. Scientists still don’t know the reason for this. Some believe REM sleep makes learning easier. Babies spend a lot of time in REM sleep. Because of this, some scientists believe that REM sleep helps the brain grow. Others think REM sleep is a time for the brain to empty the day’s garbage.
One thing all the scientists agree on is that sleep is necessary. Without enough sleep, people make mistakes. Most major car accidents happen during the early morning hours, when people are sleepiest.
1.During REM sleep, a person’s breathing and heartbeat ________.
A.stop B.increase C.decrease D.stay the same
2.Which word in paragraph(段落)3 means “colorful and lively”?
A.easier B.empty C.vivid D.quickly
3.Which paragraph tells what happens when people don’t get enough sleep?
A.1 B.2 C.3 D.4
4.What is the main idea of the article?
A.REM sleep helps the brain grow.
B.REM sleep has been watched and recorded by scientists.
C.REM sleep is a time to empty the day’s garbage.
D.REM sleep is an active time when the body is hard at work.
5.You can decide from the article that REM sleep ________.
A.has a restful effect on people
B.can be avoided with lots of sleep
C.is something that all people experience
D.is something that all scientists agree on
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Michael was good at dancing as well as singing, for example, his dance moves and moon walking. He was asked to act in a film in 1978 for the first time, and in the same year he made a record on his own, which sold eight million copies all over the world.
Michael nearly didn’t go out because he was too famous. Once his fans went off in a faint(晕倒) when they saw him at the concert. No one can do it by now. He lived in a large house and kept lots of animals. He never ate meat. He often raised money for Charity. This made him win the Guinness World Records(吉尼斯世界记录)in 2006. He died on June 25th, 2009, but he would live in our heart forever.
【小题1】 How many people are there in Michael’s group?
?
A.Three. | B.Five. | C.Four. | D.Six. |
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A.“Never Say Goodbye”.? | B.“See You, See Me”. ? | C.“I Want You Back”.? | D.“On the World”. |
?
A.抄写 | B.张/份 | C.复制 | D.模仿 |
?
A.rock music | B.street dance |
C.playing the piano | D.moon walking |
?
A.Because he was too famous.? | B.Because he often felt lonely. ? | C.Because he had no friends. | D.Because his company asked him to do so. |
Michael and Dick are good friends, but they like to play jokes on each other. One holiday, they decided to go to London together. They went to the station and bought their tickets.
Michael got on the train first. He dropped his ticket on the platform when he got into the carriage. Dick, who was close behind, saw the ticket fall and quickly picked it up. He put it in his pocket, but didn’t tell Michael. After they had been in the train for a while, they heard the conductor coming down the corridor, shouting, “Tickets, please!” Michael looked for his ticket and of course couldn’t find it.
“Oh dear, I can’t find my ticket, Dick,” Michael said.
“Look for it carefully, Michael; it must be somewhere.” said Dick.
“No, I can’t find it anywhere. What shall I do?” said Michael.
“Perhaps you’d better hide under the seat; then the conductor won’t know you are here.” So Michael hid under the seat. At this time, the conductor came in. “Tickets, please,” he said. Dick handed him tow tickets and said, “This is mine. The other is my friend’s. But he prefers to stay under the seat.”
【小题1】Michael and Dick would spend their holiday in________.
A.train | B.London | C.Pairs | D.Rome |
A.On the platform | B.In the carriage |
C.In the corridor | D.Under the seat |
A.He gave it to his friend. | B.gave it to the inspector. |
C.He put it in his bag. | D.He put it in his pocket. |
A.he didn’t buy the ticket | B.he liked to hide under the seat |
C.he couldn’t find his ticket | D.he wanted to lay with the inspector |
A.angry | B.happy | C.sad | D.worry |