The result is a big yawn.”和“They said that the reason people yawned was to cool down their brains.”,可知人们打哈欠是因为他们感觉累,并且排除二氧化碳,使他们的大脑冷静下来;故选D。 (3)题详解: 推理判断题。本文叙述了当你看见某人打哈欠的时候你第一件事想要做什么?打哈欠是传染的。但是科学...
B. Yawning is not limited to humans. C. It will make you lose interest in your work. D. But this is not always the cause for a yawn. E. Even reading the word YAWN can make people yawn. F. However, it doesn't mean that you need rest or relaxation. G. Other people believe ...
(去除)enoughcarbondioxide(CO 2)inourbodies.Whenthereistoomuchcarbondioxide,ourbodieswilltellthebrains(大脑)tobreathedeeply.Theresultisabigyawn.In2007,scientistssuggestedanewreason.Theysaidthatthereasonpeopleyawnedwastocooldowntheirbrains的理解,可知人们打哈欠是因为他们感觉累;使他们的大脑冷静下来;并且排除...
yawn. Researchers have found that 40-60% of people who see a picture of someone yawning will yawn themselves. Even reading the word YAWN can make people yawn.Some people think that yawning is rude and suggests that you are bored or uninterested. Maybe a yawn is a signal to ...
【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中两项为多余选项。What is a yawn (哈欠) and why do people yaw
What is the first thing you want to do when you see someone yawn (打哈欠) ?You want to yawn,too!Yawn is contagious. 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...
What is the first thing you want to do when you see someone yawn? You want to yawn, too! Yawning is contagious. 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...
A very short time.◆解析1.由“Sometimes people feel sleepy. They can't stayinterested in what they are doing.”可知。2.由“We callthis a yawn. It makes a pretty silly face."可知。3.由“Scientists do not know much about yawns. But theyhave some ideas.”可知。4.由“And the air ...
When a person is tired or has not slept properly, the temperature of the brain in-creases. 47 , and the brain temperature gets stabilized(稳定)too.If you yawn too much at work, the reason could be tiredness or boredom. According to a social theory, in ancient times, people used to ...
But it is not for long. Watch out! Herecomes another yawn.yawn/j5:n/n.呵欠sleepy /'sli:pi adj.困倦的,想睡的pretty /'prIti adv.非常silly/'sI/ ad.可笑的tired /tarad/ adj.疲劳的句子仿写。And the air wakes up our mind.空气能让我们的大脑清醒。马上醒来并穿衣。and dress at once.他的...