Almost all animals do it. Even small mice and huge elephants have been yawning.根据短文内容,判断句子正(T)、误(F)。Yawning is a way to get more oxygen.ATBFNewborn babies do not know how to yawn.ATBFYawning can help you keep awake.ATBFIf you yawn, other people around you often yawn,...
(每小题1.5分,满分7.5分)Why do people yawn(打哈欠)?It is a way to get more oxygen(氧气). When people are sleeping, they yawn to help stay awake.73. D. Yawning is one thing that newborn babies do often.When one person yawns, others often begin to yawn, too. Once a film of ...
Sometimes westay up late. The next morning when weget up, we cannot stop yawning. We yawn even without thinking about it.Why do we yawn when we are tired? Some people believe that our bodies yawn when we need moreoxygen. When...
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根据文中Yawning is one thing that newborn babies do often.打哈欠是新生儿经常做的一件事。可知新生儿是知道如何打哈欠的,故填B。 【3】细节理解题。根据文中When people are sleepy, they yawn to help stay awake. This is because of fresh oxygen.当人们困倦时,他们打哈欠帮助保持清醒。这是因为新鲜的...
根据第一段最后一 句:Scientists have different ideas about why we yawn, but no one knows them for sure.科学家们对我们为什么打哈欠有不同 的看法,但没有人确切知道。这里知道的内 容代指前半句提到的different ideas about why we yawn,故答案为:A。 (2)D解析:细节理解题。根据倒数第二段倒数 第二...
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.Did you yawn while reading this article? A. Yawning is ...
Yawning is something we all do –maybe because we're bored carrying out tedious tasks or because we're tired. Sometimes, just seeing other people yawn can set you off. But is this biological function really contagious, and why do we do it in the first place? Many of us think we open...
Laura Donovan
Yawningis something we all do – maybe because we’reboredcarrying out tedious tasks or because we’retired. Sometimes, just seeing other people yawn canset you off. But is thisbiological functionreallycontagious, and why do we do it in the first place?