’t.There are many ideas explaining why we yawn. One idea is that yawning is a way for the body to become more... and many animals. Cats, dogs and fish yawn just like humans do! Yawning is an involuntary (无意识的、不自 ……

为什么打哈欠会传染？When we see or hear someone yawn (打哈欠), we cannot help but do so as well. It seems.... Animals like chimpanzees (黑猩猩) and dogs will also yawn when others yawn. But kids under the age ……

they are tired or bored, but they also yawn when they aren’t.There are many ideas explaining why we yawn. One.... Cats, dogs and fish yawn just like humans do! Yawning is an action in which you open your mouth ……

yawn just like humans do.When you are yawning you open your mouth and breathe (呼吸) deeply... they are tired or bored, but they also yawn when they aren’t.There are many ideas explaining why we yawn ……

Why do people yawn?Why do people yawn?Q: Why do peopleyawn(打哈欠)?A: A yawn isdefined(定义) as "To open...或厌倦)." As to why we yawn, no one is really sure. Many scientists think that it is the body's way ……

is that when we see another person yawn, it makes us do it too. In other words, yawning is contagious...我们为什么会打哈欠？词数 360 建议阅读时间 5分钟 测试见7版YAWNING is often the first thing we do when we wake up, and we ……

为什么打哈欠时会流眼泪？When you see someone yawn (打哈欠), you might yawn, too, and something else may also happen. You might release a tear or two. Why?When we yawn, the facial muscles (脸部肌肉) around our eyes pull ……

– or “catch a yawn”, as it is called. This suggests that the reason we yawn when others do is psychological... area of our brain when we react to yawning as we do when we consider others.However, young children ……

a strange phenomenon. It is contagious (会传染的) – we yawn when we see someone else do it and we even do so... theory is that yawning cools down the brain because experiments have shown that when we yawn, a few ……

). But dogs also yawn when they are tired, just like humans do! The answer is C. When dogs are stressed...;The answer is C. When dogs are stressed, they often yawn to calm (使……冷静) themselves down, says ……

to discuss.Why do we yawn? (P6)Choose the best answer:13. What’s the purpose of the description.... To explain how humans start yawning.C. To explain why humans yawn.D. To complain about being woken up ……

. Only Chinese users have access to the new serviceWhy do people yawn? (P2)True or false:____ 7. Only... 10. People yawn when they are tired or bored.____ 11. Scientists are sure that yawn is a way ……

that _______.A. people yawn when they feel exhaustedB. people yawn so their brains can get a restC. people yawn more in cold weatherD. people stop yawning when they move outdoors2. What can we ……

among humans.C. To explain why some animals yawn and others do not.D. To show how yawning spreads from....A. humans become more empathetic as they grow oldB. kids younger than four don’t yawn when they see ……

欠) – from unborn babies to great-grandparents. But why, exactly, do we yawn? 1...欠) – from unborn babies to great-grandparents. But why, exactly, do we yawn? 1 ……