PIRI

What is a fact about yawning?

• It is something we cannot control

• It is something only humans do

• It is a result of boredom.

• It happens after birth.

Which of the following might make us yawn?

• reading a book

• being in a crowded room

• being around plants

• being in a small air-conditioned car

What does the word "involuntary" mean?

• expected

• unexpected

• within control

• uncontrollable

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.

According to the selection, what is most likely to happen after we yawn?

• a. We will become more alert.

• b. We will be less tired.

• c. We will be less sleepy.

• d. We will be calmer.

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 breathe more air

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.

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.