1、Unit 3 Environmental ProtectionReading and ThinkingBefore Reading1.What is the graph about?What information can you get from it?2.Have you ever seen the photo before?What might be the story behind it?Activity 1:Before you read,look at the graph and the picture below and discuss these questions in gr
2、oups.Activity 1:Before you read,look at the graph and the picture below and discuss these questions in groups.1.What is the graph about?What information can you get from it?2.Have you ever seen the photo before?What might be the story behind it?No,I havent seen this photo before.The story may be tha
3、t the polar bear suffered from the increasing global temperature.The graph is about the change of the global surface temperature.It shows that the global temperature is rising.Before ReadingActivity 2:Read the text and answer the questions.1.What happened to the polar bear in the photo?Why did the w
4、riter write about it?2.Why is the“natural”greenhouse effect important and necessary?3.What are the consequences of high greenhouse gas emissions?4.Why did the author mention the climate scientists warning?5.What is the authors purpose of writing this text?（点击此处播放音频）Before ReadingDifferent forms of a
5、rtWhile ReadingKeys:1.The polar bear in the photo died of starvation.The writer wrote about it because it showed one of the effects of rising temperatures due to climate change.2.The“natural”greenhouse effect is important because it warms the Earths surface and keeps it habitable.3.High greenhouse g
6、as emissions lead to more heat energy being trapped in the atmosphere and rising temperatures.4.Because the writer wanted to warn us of how urgent it was for us to take appropriate actions.5.To arouse our awareness of the problem and encourage us to take appropriate measures to deal with global warm
7、ing.Activity 2:Read the text and answer the questions.Fast reading.1.What does the passage mainly tell us?A.Some polar bears died of starvation.B.What the greenhouse effect is.C.How the polar bears find food.D.Global warming has caused some disasters and we must pay attention to it.While Reading2.Re
8、ad the text and find out the main idea of each paragraph.Para.1A.We need to do something to reduce greenhouse gas emissions.Para.2B.The rise in temperature has caused natural disasters.Para.3C.Earth is getting warmer and warmer.Para.4 D.A dead polar bear was found,which alarmed some experts.Para.5E.
9、Why is Earth getting warmer and warmer?Fast reading.While Reading Careful reading.Read the passage carefully and choose the best answer.1.From the second paragraph we can learn that .A.all the polar bears have died of starvationB.the expert knows nothing about the polar bearC.the polar bear couldnt
10、find enough food because of climate changeD.the polar bear liked travelling long distancesWhile Reading2.According to the passage,help(s)Earth sustain life.A.the natural greenhouse effectB.the man-made greenhouse effectC.the carbon dioxide released into the atmosphereD.greenhouse gases produced by p
11、eople Careful reading.While Reading3.Which of the following statements is TRUE according to the passage?A.According to climate scientists,the warming trend will stop.B.Extreme weather results from the rise in temperature.C.People should burn more fossil fuels.D.It is the governments responsibility t
12、o reduce greenhouse gas emissions.Careful reading.While Reading4.We can learn from the passage that .A.it doesnt matter whether we pay attention to global warming or notB.heat from the sun keeps Earth habitableC.the rise in temperature doesnt affect peoples lifeD.the rise in temperature only affects
13、 some animals Careful reading.While ReadingAfter ReadingActivity 3:Read the text again and create a diagram describing how the greenhouse effect works.Draw a diagramDiagrams are very useful tools that can be used to brainstorm ideas,map out processes,show cause and effect relationships,explain a new
14、 idea or concept,and so on.When you read an essay about scientific issues,you can try drawing a diagram,which will not only allow you to visualise the problems more clearly but also can help demonstrate your creative thinking and problem-solving.Key:Activity 3:Read the text again and create a diagra
15、m describing how the greenhouse effect works.After ReadingHomework Activity 4:Discuss these questions in groups.1.What examples of extreme weather and disasters do you know?Can you make a list?2.Do you think climate change is the result of human activity?Give your reasons.3.Who do you think should t
16、ake responsibility for dealing with climate change?What can we do?Homework Activity 4:Discuss these questions in groups.Keys:1.Tornado,hail,typhoon,strong cold wave,sandstorm,etc.2.Yes,I think so.It is the burning of fossil fuels by human beings that has added more heat to the atmosphere.3.Everyone of us should take responsibility for it.We can buy things that are economical with energy and recycle paper bags,cans and bottles.
