Question

【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。选项中有两项为多余选项。

What is a yawn and why do people yawn? A yawn is often associated with a person being tired. 【1】____ People yawn for many reasons including stress, boredom, emotion and overwork.

Have you noticed that yawning seems to be contagious(会传染的)? If one person yawns, this appears to cause another person to yawn. Researchers have found that 40－60% of people who see a picture of someone yawning will yawn themselves.__ 【2】__

Some people think that yawning is rude and suggests that you are bored or uninterested. Maybe a yawn is a signal to a group that it's time to go to sleep, or if someone yawns when they're bored, it may be a sign to change the topic of conversation. _【3】__ Animals of all types yawn. If you have a dog or cat, you've probably seen your pet yawn several times. Even some birds yawn such as cockatiel parrots, Adelie penguins and Emperor penguins.

Some of the scientific explanations of why we yawn claim it is caused by physical needs. One likely explanation is that the yawning reflex happens when our blood needs more oxygen. The deep breath helps supply the levels of oxygen in our blood. _【4】_ It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn.

Superstitions about yawning have been around for hundreds of years and can date back to the ancient Greeks. 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.

A. Did you yawn while reading this article?

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. Other people believe that yawning is a sign that danger is near.

G. Another common theory is that a yawn helps regulate our body temperature.

Answer 1

【答案】

【1】D

【2】E

【3】B

【4】G

【5】F

【解析】

试题分析:本文是一篇关于打哈欠的文章，文章介绍了打哈欠对人身体的影响以及人们对为什么人会打哈欠的猜想等。

【1】D考查对上下文的理解和推理判断能力。根据People yawn for many reasons including stress, boredom, emotion and overwork.可知人们打哈欠的原因有很多，劳累并不是总是打哈欠的原因，D选项But this is not always the cause for a yawn.，符合，故选D。

【2】E考查对上下文的理解和推理判断能力。根据 Researchers have found that 40－60% of people who see a picture of someone yawning will yawn themselves可知人们看见和YAWN有关的标志就会打哈欠，故 E选项Even reading the word YAWN can make people yawn.，符合，所以选择E.

【3】B考查对上下文的理解和推理判断能力。根据Animals of all types yawn可知打哈欠不止限于人类，动物也会，B选项Yawning is not limited to humans.，符合，故选B。

【4】G考查对上下文的理解和推理判断能力。根据The deep breath helps supply the levels of oxygen in our blood. 以及It is also thought that the same chemicals in our brain that affect our moods and emotions cause us to yawn.可知这里要写的是打哈欠对人身体的影响，G选项Another common theory is that a yawn helps regulate our body temperature.，符合，故选G。

【5】F考查对上下文的理解和推理判断能力。根据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.可知这里要写的是对打哈欠的一些看法，F选项Other people believe that yawning is a sign that danger is near.符合 ，故选F