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 children are about one year old, they start to yawn when they see others yawning. That's why scientists seem to ...
A. Yawning is not limited to humans. B. It will make you lose interest in your work. C. But this is not always the cause for a yawn. D. Even reading the word YAWN can make people yawn. E. However, it doesn't mean that you need rest or relaxation. F. Other people believe ...
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 children are about one year old, they start to yawn when they see others yawning. That's ...
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 children are about one year old they start to yawn when they see others yawning. That’s why scientists seem to ...
What is the first thing you want to do when you see someone yawn (打哈欠) ?You want to yawn,too!Yawn iscontagious. 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 ...
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 ...
What did a study by the University of Nottingham discover about people's urge to yawn?A) It can be prevented with electrical stimulation.B) It doesn't exist when we observe others yawning.C) It's highly contagious between humans.D) It increases when volunteers are told not to yawn. 相关...
Questions 17--20 are based on the following monologue about yawn. You now have 20 seconds to read Questions 17--20.What physiological reason for yawning is mentioned A.To exercise the jaw muscles.B.To eliminate fatigue.C.To get greater strength for attacking.D.To gain more oxygen. 点击查看...
Yawning iscontagious. 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 children are about one year old, they start to yawn when they see others yawning. That's why...
E.Even reading the word YAWN can make people yawn. F.However, it doesn't mean that you need rest or relax??ation. G.Other people believe that yawning is a sign that danger is near. H.Another common theory is that a yawn helps regulate our body temperature. ...