大师作文网求一片英语短文的意思?
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/10 23:46:20
求一片英语短文的意思?
CAN you remember a morning when you’ve woken up to the ring of your alarm clock and wished you could stay in bed?You haven’t slept well,your eyes are bleary and your hair is a mess.Worse,you can’t stop yawning.Yawning is universal to humans and many animals.Cats,dogs and fish yawn just like humans do!Yawning is an involuntary (无意识的) action during which you open your mouth and breathe deeply.The average duration of a yawn is about 6 seconds.The purpose and cause of yawning are still a mystery.Scientists are not sure what causes a yawn.People yawn when they are tired or bored,but they also yawn when they aren’t.There are many ideas explaining why we yawn.One idea is that yawning is a way for the body to become more alert by taking in more oxygen.A yawn increases the heart rate,forces carbon dioxide out of the lungs (肺) and bloodstream,and brings oxygen to the brain.But one study showed that volunteers given a lot of oxygen did not yawn any less than before,while those given a lot of carbon dioxide did not yawn more.Another idea is that early humans used yawning as a form of communication.If one decided it was time to sleep,they would tell the others by yawning and they would do it in return to show they agreed.A third explanation comes from psychology (心理学) professor Gordon Gallup of University at Albany in New York.He said that as people yawn,they cool off their brains.“Brains are like computers,” he said.“They only operate efficiently (有效率地) and effectively when they’re cool.” Many things connected to yawning,like being tired,make the brain hot,and yawning can reduce the heat,he said.Scientists have sent people into space,but there are lots of seemingly (表面上) simple things,such as why we yawn,or hiccup,that they cannot figure out.Next time you are in class in the morning,let out a big yawn and watch to see how many of your classmates yawn in response!
CAN you remember a morning when you’ve woken up to the ring of your alarm clock and wished you could stay in bed?You haven’t slept well,your eyes are bleary and your hair is a mess.Worse,you can’t stop yawning.Yawning is universal to humans and many animals.Cats,dogs and fish yawn just like humans do!Yawning is an involuntary (无意识的) action during which you open your mouth and breathe deeply.The average duration of a yawn is about 6 seconds.The purpose and cause of yawning are still a mystery.Scientists are not sure what causes a yawn.People yawn when they are tired or bored,but they also yawn when they aren’t.There are many ideas explaining why we yawn.One idea is that yawning is a way for the body to become more alert by taking in more oxygen.A yawn increases the heart rate,forces carbon dioxide out of the lungs (肺) and bloodstream,and brings oxygen to the brain.But one study showed that volunteers given a lot of oxygen did not yawn any less than before,while those given a lot of carbon dioxide did not yawn more.Another idea is that early humans used yawning as a form of communication.If one decided it was time to sleep,they would tell the others by yawning and they would do it in return to show they agreed.A third explanation comes from psychology (心理学) professor Gordon Gallup of University at Albany in New York.He said that as people yawn,they cool off their brains.“Brains are like computers,” he said.“They only operate efficiently (有效率地) and effectively when they’re cool.” Many things connected to yawning,like being tired,make the brain hot,and yawning can reduce the heat,he said.Scientists have sent people into space,but there are lots of seemingly (表面上) simple things,such as why we yawn,or hiccup,that they cannot figure out.Next time you are in class in the morning,let out a big yawn and watch to see how many of your classmates yawn in response!
你记得那个当您被你的闹钟铃声吵醒但希望仍可以躺在床上的早晨吗?你还没睡得好,你的眼睛是朦胧的,你的头发是一团糟.更糟的是,你不能停止打呵欠.打哈欠是对人类和许多动物普遍的.猫、 狗、 鱼打哈欠就像人一样 !打哈欠是一种非自愿 (无意识的) 行动,在这期间你张开嘴,深呼吸.一个哈欠的平均时间是 6 秒左右.打呵欠的目的和原因仍然是个谜.科学家们不确定什么原因导致打哈欠.人们呵欠时他们感到疲倦或无聊,但它们不是时,他们也打哈欠.有很多的想法,解释为什么我们直打呵欠.一个想法是打哈欠是使我们变得更加警觉,通过更多的氧气在身体的一种方式.一个哈欠增加心率、 强制二氧化碳从肺和血液中排出,并带给大脑氧气.但一项研究表明志愿者给予了很多氧气不打哈欠没有任何少于之前的,而那些给予大量的二氧化碳没有不打哈欠更多.另一个想法是早期人类用作为沟通的形式打呵欠.如果其中一个决定是睡着的时候,他们会告诉其他人,打呵欠的他们会用它的回报以显示他们同意.第三种解释来自大学戈登 · 盖洛普在纽约的奥尔巴尼分校的心理学 (心理学) 教授.他说,人们呵欠,他们凉快凉快他们的大脑."大脑,像电脑,"他说."只有在高效运行 （有效率地） 和有效地他们很酷."连接到打呵欠,像厌倦了,很多事情使脑热,并打呵欠,可以减少热量,他说.科学家们已派人到太空,但有很多看似 （表面上） 简单的事情,例如,我们为什么打哈欠,或打嗝,他们不能得出.下一次您上午有班,打一个哈欠,并且看一下你的同学有多少打哈欠响应 !