What is the first thing you want to do when you see someone yawn? You want to yawn, too! Yawning iscontagious.
Scientists have found that all people yawn. Babies start to yawn even before they are born. The earliest yawn takes place when a baby is still inside its mother. When young children are about one year old, they start to yawn when they see others yawning. That's why scientists think yawning is contagious.
It’s no secret that yawning is contagious, but why do we yawn? Well, scientists are not really sure.
Some think we yawn because we feel bored. Others believe yawning has something to do with breathing. When there is too much carbon dioxide(CO2) in our bodies, our bodies will tell the brains to breathe deeply. That causes a big yawn.
In 2007, scientists said people yawned to cool down their brains. These scientists found people yawned more often if they were warmer than others.
Scientists are still trying to find out why yawning happens and why it is so contagious. But they are only sure that when one person yawns, immediately everyone else nearby wants to yawn, too.
1.The underlined word "contagious" in Paragraph 1 means__________.
A. helpful to our health B. passing from one person to another
C. hard to understand D. getting into one trouble after another
2.According to the scientists, people start to yawn when they are__________.
A. born B. one year old C. 17 or 19 years old D. inside their mothers
3.Which of the following is NOT RIGHT according to the passage? __________
A. People yawn to catch others' attention. B. People yawn because they are bored.
C. People yawn to cool down their brains. D. People yawn to get rid of carbon dioxide.
4.We can probably read this passage in a__________.
A. story book B. movie poster C. science magazine D. travel guidebook
1.B 2.D 3.A 4.C 【解析】文章讲述了人们打哈欠的事情。 1.根据 when you see someone yawn, You want to yawn, too!可知是传染,传递;故选B 2.根据The earliest yawn takes place when a baby is still inside its mother.故选D ...科目:初中英语 来源:牛津译林版8AUnit 2 School life单元测试卷 题型:完型填空
Tom was sitting in his English class. It was a hot afternoon and he was feeling sleepy. It was a grammar lesson and Tom was so bored. He _____ grammar. He wanted to leave school and work. Tom looked out of the _____. He looked at the trees and flowers. Then he started day-dreaming.
After ten minutes the teacher stopped ____. He asked the students to do a grammar exercise in their books. The students took out ____ exercise books and pencils and they started writing. The teacher looked at Tom. He saw that he wasn't writing so he said, "_____ aren't you writing, Tom?"
"What,sir?" Tom said.
"_____, Tom! " the teacher said. "Why aren't you writing?"
Tom thought for a moment and replied, "I got no pencil. "
The teacher looked _____ Tom and said, "You got no pencil? You mean you don't have a pencil"
Tom didn't understand the English teacher ____ he said, "Sorry, sir?"
The teacher said in a ( n) _____ voice, "I don't have a pencil. He doesn't have a pencil. She doesn't have a pencil. We don't have pencils. They don't have pencils. Now, Tom, do you understand?"
Tom looked at the teacher for a moment and then he said, "My goodness! What happened to all the ______ sir? "
1.A. hated B. loved C. studied D. enjoyed
2.A. book B. blackboard C. window D. desk
3.A. thinking B. talking C. shouting D. listening
4.A. their B. his C. our D. your
5.A. When B. How C. What D. Why
6.A. Sit down B. Come in C. Wake up D. Get up
7.A. after B. at C. for D. through
8.A. because B. when C. while D. so
9.A. happy B. angry C. excited D. sad
10.A. books B. pens C. papers D. pencils
1.A 2.C 3.B 4.A 5.D 6.D 7.B 8.D 9.B 10.D 【解析】文章讲述了一个上课不听课,做白日梦的男孩的故事。 1.句意:他讨厌语法。A. hated 讨厌; B. loved 爱; C. studied学习; D. enjoyed享受;根据后文He wanted to leave school and ...查看答案和解析>>
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A. go to bed earlier. B. ride a bike. C. move the alarm clock away.
C 【解析】此题为听力题,解析略。查看答案和解析>>
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Why won’t the woman go to the concert (音乐会)?
A. Because she hasn’t got a ticket for the concert.
B. Because she is too busy at work.
C. Because of some visitors’ arrival.
C 【解析】M: Mary, I have an extra ticket for the concert tonight. Can you come with us? W: I’d love to, but we’ll have some visitors tonight. Thank you, anyway. 听力题,解析略。查看答案和解析>>
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What is the weather like tomorrow?
A. B. C.
B 【解析】M: What does the radio say about tomorrow’s weather? W: It says it will be rainy tomorrow. 听力题,解析略。查看答案和解析>>
科目:初中英语 来源:浙江省平阳县2017-2018学年第一学期第二次阶段检测八年级英语试卷 题型:单选题
--- What’s your plan for the coming weekend?
---______ go to fly kites?
A. Why not B. Why don’t C. How about D. Let us
A 【解析】句意:——到来的这个周末你计划干什么?——为什么不去放风筝呢? Why not 后用动词原形; Why don’t后要有主语,不能直接接动词; How about 后用doing形式; Let us 是肯定的祈使句,不能用问号;故选A查看答案和解析>>
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The two teams are warming up on the playground. They will play ____ each other.
A. at B. to C. for D. against
D 【解析】句意:这两个队在操场上热身,他们将进行对抗比赛。play against对抗比赛;故选D查看答案和解析>>
科目:初中英语 来源:牛津译林版9B Unit1 Asia 单元测试卷 题型:单选题
-Oh, what a bad memory I have! I forgot your umbrella.
-_______. It is sunny. I don't need it today.
A. Never mind B. You're welcome
C. No problem D. All right
A 【解析】句意:噢,我的记性真差!我忘了你的雨伞。——没关系。天气阳光明媚,我今天不需要它。A. Never mind没关系;B. You're welcome欢迎你;C. No problem没问题;D. All right好吧。根据上下文的语境可知A选项符合题意,故答案选A。查看答案和解析>>
科目:初中英语 来源:安徽省亳州市涡阳县2017-2018学年八年级上学期期末教学质量检测英语试卷 题型:阅读单选
When I was young,I liked to play jokes on people I knew, especially on my parents and friends. One day my mother was cooking and I was playing with my younger brother Tony. Suddenly I ran to my mother and said: “Tony fell from the open window!” She was very worried and ran out of the kitchen. Then I said: “Don’t worry, I’m just joking.” My mother shouted at me, “If you do it again, I’ll hit you.”
Another day I went swimming with my friends in the sea. I wanted to play a joke on them. In the beginning I swam fast and I called out “Help!”. All my friends came to help me. However, they found that I was joking. But half an hour later I wasn’t joking. I was so fast, soon I got tired and couldn’t swim on in water. I tried my best to call my friends for help, but this time nobody came to help me.
In the end they found I was telling the truth. They came and saved my life. They took me to the hospital. This is the best lesson in my life. From then on I haven’t joked on anyone.
1.When he was young, the writer liked to _______.
A. play with his brother B. help his mother cook
C. play jokes on people D. go swimming with his friends
2.What happened when the writer was playing with his brother? ______
A. He got tired. B. He played a joke on his mother.
C. Tony fell from the open window. D. His mother hit him.
3.In the beginning, all his friends came to help him because he ______.
A. swam fast B. called for help
C. would sink in water D. couldn’t swim on in the water
4.When the writer called his friends for help for the second time, they ______.
A. took him to the hospital at once
B. came and saved him immediately
C. thought at first he was joking again
D. did nothing because the writer had lied to them
5.The story tells us that ________.
A. swimming is dangerous
B. the writer is a naughty boy
C. one can play jokes only on people he knows
D. if someone always tells lies, others won’t trust (信任) him
1.C 2.B 3.B 4.C 5.D 【解析】试题分析:这是一个英文版的狼来了的故事。文中的主人公喜欢跟人开玩笑,但是在一次自己差点因此送命之后,就再也不和人开玩笑了。 1. 2. 3. 4. 5.查看答案和解析>>
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