Pagsagot po please YAWNING
What makes us yawn? Yawning is something that we cannot
control. Even in the mother's womb, eleven-week-old babies have been
observed to yawn. But why do we do it? One popular explanation for
yawning is that a person may be tired or bored. Although many believe this
to be true, it cannot explain why athletes yawn before an event or why
dogs yawn before an attack,
It is said that yawning is caused by a lack of oxygen and excess
carbon dioxide. A good example of this is when we yawn in groups. We
yawn because we are competing for air. Others even believe that we yawn
to cool our brains off. Cool brains allow us to think more clearly so yawning
is said to help us become more alert.
Reference: McManus, M. R. (2001). What makes us Yawn? Retrieved from: Howstuffworks com
http://science.howstuffworks.com/life/inside-the-mind/human brain/question 572.htm
a.
C.
Questions
1. What is a fact about yawning?
a. It is something we cannot control.
b. It is something only humans do
c. It is a result of boredom.
d. It happens after birth.
2. Which of the following might make us yawn?
a. reading a book
b. being in a crowded room
c. being around plants
d. being in a small air-conditioned car
3. What does the word "involuntary" mean?
a. expected
b. unexpected
c. within control
d. uncontrollable
4. Which of the following may be a benefit of yawning?
a. It warns us of possible attacks by dogs.
b. It provides us the carbon dioxide we need.
c. It cools our brains.
d. It balances the amount of oxygen and carbon dioxide.
​5. According to the selection, what is most likely to happen after we yawn?
A. We will be become more alert.
B. We will be less tired.
C. We will be less sleepy.
D. We will be calmer.
6. In the selection, how is the word 'compete' used in the phrase "competing for air?
A. Struggling to take in some air.
B. Arguing about breathing.
C. Battling it out for oxygen.
D. Racing to the breathe more air.
7. Which of the following shows evidence that" yawning " is" competing for air?
A. The passengers in an elevator yawned.
B. Several people yawned while picnicking at an open field.
C. Two people yawned inside a room with air-conditioning.
D. Three students yawned in a big empty room.
8. Which of the following is the best response when we see a person /animal yawn?
A. Have the person eat a food item that is a good source of energy.
B. Change the topic of conversation to a more interesting one.
C. Turn on an electric fan or source of ventilation.
D. Run away to avoid being attacked.
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