Question

【题目】 Why do people yawn(打呵欠)? It is a way to get more oxygen(氧气). When people are sleepy, they yawn to help stay awake. This is because of fresh oxygen. Yawning is one thing that newborn babies do often.

When one person yawns, others often begin to yawn, too. Once a film of someone yawning was shown, and almost everyone in the theater started to yawn.

Try yawning in a room full of people. Watch how soon others begin to yawn. See if the fact that they are yawning makes you want to yawn more.

Human people are not the only creatures(生物) that yawn. Almost all animals do it. Even small mice and huge elephants have been yawning.

根据短文判断正误, 判断正（A）误（B）题。

【1】Yawning is a way to get more oxygen.

【2】Newborn babies do not know how to yawn.

【3】Yawning can help you keep awake.

【4】If you yawn, other people around you often yawn as well .

【5】Very large animals do not yawn.

Answer 1

【答案】

【1】A

【2】B

【3】A

【4】A

【5】B

【解析】

本文叙述了当你看见某人打哈欠的时候，你也会打哈欠。但是科学家们还没有找到原因，只知道一个人打哈欠，他附近的人也想打哈欠。不仅人类会打哈欠，几乎所有的动物都会打哈欠。

【1】细节理解题。根据文中It is a way to get more oxygen(氧气). 这是一种获得更多氧气的方法。可知打哈欠是为了得到更多的氧气，所以本题是正确的，故填A。

【2】细节理解题。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。这是因为新鲜的氧气。可知打哈欠可以让人们变得清醒，故填A。

【4】细节理解题。根据文中When one person yawns, others often begin to yawn, too. 当一个人打哈欠时，其他人也经常打哈欠。可知当一个人打哈欠时，另外的人也会跟着打哈欠，故填A。

【5】细节理解题。根据文中Human people are not the only creatures(生物) that yawn. Almost all animals do it. Even small mice and huge elephants have been yawning. 打哈欠的不仅仅是人类。几乎所有的动物都这样做。就连小老鼠和大象也在打哈欠。可知大的动物也会打哈欠，故填B。