A common superstition says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth. __5__ Today most people do not believe these superstitions and know that a yawn is a physical reflex. A. Did you yawn while reading this article? B...
Everybody yawns(打哈欠).But why do people yawn? It's clear that it's because we are tired,but why does being tired make us strong? How does yawning help us? The truth is that we don't know the answers to these questions. Scientists have different thoughts about why we yawn, but no...
But why dopeople yawn? It's clear that it's because we aretired, but why does being tired makes usstrong? How does yawning help us? The truthis that we don't know the answers to thesequestions. Scientists have different ideas aboutwhy we yawn, but no one knows them forsure.The ...
But why do people yawn? It’s clear that it’s because we are tired, but why does being tired makes us strong? How does yawning help us? The truth is that we don’t know the answers to these questions. Scientists have different ideas about why we yawn, but no one knows them for...
15.A。根据最后一段“if you see another person yawn, then you willbe more likely to yawn,too"可知,如果看到边上的人打呵欠,你也更有可能打呵欠。 结果一 题目 【题目】Everybody yawns (打哈欠). But why do people yawn? It's clear that it's because we aretired, but why does being tired...
her mouth when yawning so that the soul does not escape through the mouth. Other people believe that yawning is a sign that danger is near.Today most people do not believe these superstitions and know that a yawn is a physical reflex.Did you yawn while reading this article?
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does not make you yawn less.Also,breathing more carbon dioxide does not make you yawn more.Another idea is that yawning stretches6the lungs7and other parts of your body.It can be a way to stretch muscles and joints8,increase heart rate,and feel more awake.Other people believe that yawning...
If it does, next time you yawn in company, don’t feel too embarrassed. You’re just showing off yourpeople skills. 词汇表 contagious 会传染的 motor 肌肉运动的,运动神经的 cortex (尤指大脑或其他器官的)皮层 involuntary 不由自主的 physiolog...
A common superstitions says that a person must cover his or her mouth when yawning so that the soul does not escape through the mouth. 5. __T oday most people do not believe these superstitions and know that a yawn is a physical refler.A. Did you yawn while reading this article?B....