2021-2022学年度第42期总第872期 (6版)
Taming air power (Page 6)

I. Answer the following questions.
1. What is the writer's purpose? 
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2. What is Bernoulli’s Principle?
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3. How can you cool the room quickly using the Bernoulli’s Principle? 
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II. Fill in the blanks. 
 

III. Further thinking. 
What other physical principles are used in our daily life?
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参考答案：
I. 
1. The writer intends to introduce the Bernoulli’s Principle to readers.  
2. It’s named after Daniel Bernoulli, a Swiss mathematician and physicist who published it in a book in 1738. Basically, when fluids (liquids and gases) move quickly, they immediately create low-pressure zones behind. Surrounding high-pressure fluids will rush to fill the low-pressure zone, creating even more pressure.
3. Point an electric fan toward the window. However, don’t put it too close. When the fan runs, it will create a low-pressure zone and the hot air will go out the window.     
II. a Swiss mathematician and physicist
move
low-pressure zones
Surrounding high-pressure fluids
pressure
fly
quickly clear smoke out of a house
cool