2020-2021学年度第40期总第832期
Beneath Olympic ice
吉林毓文中学 赵传彦
I. Lead-in
What do you know about Beijing Winter Olympics?
 
logo
 
“Ice Ribbon”
 
Bing Dwen Dwen, the mascot
 
Let's watch a video to know more!!!
II.Prediction
Beneath Olympic ice
 
III. Read for structure  
 
III. Read for structure  
Divide the passage into four parts.
para 1 Background: Beijing Winter Olympics
para 2 Introduction: Olympic ice
para 3-7 Ice-making: Raw material; technology; reason
para 8 Ending: Outlook
IV. Read for details  
1. What's the difference between the ice in the Winter Olympics and the ice people usually think of?
2. How was the ice for the Winter Olympics made?
3. Why was CO2 used as a refrigerant?

  
1. What's the difference between the ice in the Winter Olympics and the ice people usually think of?
In the Winter Olympics, where races can be won or lost by a small time gap, tiny imperfections in the ice can make all the difference.
 
“It’s a much more fascinating and complex substance than people would normally think.”
 
2. How was the ice for the Winter Olympics made?
 
3. Why was CO2 used as a refrigerant?
Because its greenhouse effect is much lower than that of other synthetic refrigerants. 
Using CO2 in ice-making will reduce carbon dioxide emissions greatly. 

China attaches importance to environmental protection, take carbon dioxide emissions seriously and think highly of sustainability of the Games.

Our country's ideas and technology are at the forefront.

V. Deep thinking
What does Kenneth Golden mean by “more fascinating and complex substance”?
Purifying the water is to remove the impurities that don’t fit in the regular hexagonal structure of ice that forms as water freezes.
 
At least a year before the Olympic Games, they sprayed hundreds of layers of ultra pure water on the skating rink, which took about five days of continuous operation.
 
For every sport, the ideal ice temperature and thickness are different.
 
VI. Language study
Can you find these expressions in the text?
1. 进入尾声
2. 地标性场所
3. 微小瑕疵
4. 除......外
5. 最先进的技术 
6. 大规模地
7. 投入使用
8. 温室气体
9. 以一种更壮观的方式
 
The more pure the water is, the more consistent the ice surface, according to Smithsonian. 
Imitative Writing
你越用功，进步就越大。
The harder you work, the greater progress you will make. 
越是危险，我们越应勇敢。
When we are more in danger, we should be braver. 
Homework
What did you learn from this passage?