题型:阅读选择 题类: 难易度:普通
广东省广州市2023-2024学年九年级上学期12月份月考英语试卷
Do you yawn? There are about 20 reasons that scientists think are possible for yawning after research. They do not know exactly why yawning happens, but they do know many facts about yawning.
We know that everyone yawns in the same way. First you open your mouth slowly. Your mouth stays open for about five seconds. You take in a lot of air and then push it out. Then you quickly close your mouth. We also know that yawning is contagious. When you see someone yawn, you yawn, too.
Many people say they yawn because they are bored or tired. That might be true. People do often yawn before they sleep and after they wake up. However, we know that people also yawn when they are excited or nervous. Olympic runners, for example, often yawn before a race. Why is that? In 2007, scientists found that a yawn could help a warm brain cool down.
Some scientists believe that yawning makes you notice things more quickly. When you yawn, you breathe deeply. You also stretch(伸展)the muscles in your face, mouth, and neck. Your eardrums stretch, too. Maybe this helps you to be quicker to notice things.
In some countries, people think yawning is not nice. People put their hands over their mouths to cover a yawn. In other countries, people think yawning is healthy. They think that opening the mouth very big can let good things in. When they breathe out, they think that bad things go out of the body with the air.
All in all, scientists do not spend much time studying yawning. That is probably because yawning does not hurt. It is just something we do.
The National Student Exchange is a study chance that allows you to take new courses, see new places, make new friends, and make new choices. You can study for a term or year at one of nearly 200 NSE member schools in the places listed below. New York Canada Guam Puerto Rico U. S. Virgin Islands |
The program is open to students now enrolled (登记) at one of NSE's member schools. You can take part in NSE to: broaden (开阔) your mind learn from different teachers experience a different growth find new ways of study learn to live by yourself experience life from a different culture If your school is not an NSE member, you'd better bring the program to the attention of your head teachers. NSE is open to schools in the United States and Canada. Membership information is useful at the Prospective Member site. |
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Friendship High School
Name: Li Hua Grade: 9 Term: Spring Date: April 19, 2024
Subject | Score | Comments |
Chinese | B | Pays attention well but is often late for class |
Math | D | Must try harder |
Science | F | Very poor |
Social Studies | C+ | Shows interest |
Art | A+ | Has great ability |
English | B | Is making progress |
Average: C
To Parents:
Li Hua is a good student in subjects he likes, but he does not really try the ones he doesn't like. He must try harder if he wants to succeed at school.
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