Unit 3 Reading and thinking ppt课件 -（2022新）人教版高中英语选择性必修第三册.pptx

1、Reading and Thinking 先听视频然后听取信息先听视频然后听取信息 Weve had_ days with the mercury hitting a _35 degrees Celsius._are set to rise even further this week Right now, human beings are facing greatest_:climate change. Scientists were _ that climate change would happen in the future. The_ of climate change can be

2、 seen. For example, greater storms, greater_, greater heat waves, _ sea level rises Scientists firmly believe that we risk a _future and the _actions is needed.hot; scorching; Temperatures; threat; predicting; impact; floods; extreme; devastating; urgent1. What type of writing is this passage?A. Arg

3、umentative writing B. Narrative writingC. Expository writing D. Advertising writingC2. In which part of a newspaper or magazine may we find this passage?A. Entertainment B. EconomyC. Education D. EnvironmentDRead the passage quickly, and choose:1. What is the graph about? What info. can u get from i

4、t?The graph shows the change in the Global Surface Temperature between 1920 and 2016. Look at the graph and discuss the questions in groups.2. What can you see in the photo?The polar bear starved to death because it could not find enough to eat.3. What are the relationship between them?It showed one

5、 of the effects brought by the rising temperature.What is the benefit of using a diagram?What is the benefit of using a diagram?Diagrams are very useful tools, which will not only allow you visualise the problems more clearly.Para 1: We have known about climate change for decades.There is little dou

6、bt that Earth is gettingwarmer and warmer(see the graph).A warming ocean and atmosphere along with melting iceand rising sea levels provide evidence of a dramatic change in the global climate.Para 2 In 2013,a lot of people were shocked by a news photo of a dead polar bear that was found on Norways A

7、rctic island of Svalbard.According to the scientists who found its dead body,all thatremained of the polar bear was skin and bones.An expert who has studied polar bears formany years said that from the position of its dead body.the bear appeared to have starved anddied.Experts claimed that low sea-i

8、ce levels caused by climate change meant the bear couldnot hunt seals as before.so it had to travel greater distances in order to find food.This alarmingcase showed how the increase in temperature had an impact on Earths ecology.The evidence of dramatic climate change that had an impact on Earths ec

9、ologyUnderlined the key words in each para and then summarize the main ideaPara 3: Then what is causing the increase in the global average surface temperature?Climate scientistsoften mention a key climate process called the greenhouse effect.which has two commonmeanings:the naturalgreenhouse effoct

10、and the man-madogreenhouse effect.The naturalgreenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earths surface as short-wave radiation.The heat is released back into space at longerwave lengths.Greenhouse gases in the atmosphere,such as methane and carbon dio

11、xide.trap some of the heat,keeping Earths climate warm and habitable.Without this process,Earth could not sustain life.However,the man-madegreenhouse effect has now becomea big problem.When people produce huge amounts of extra greenhouse gases by burningfossil fuels,more heat energy is trapped in th

12、e atmosphere and causes Earths surfacetemperature to rise quickly.The cause of the increase in the global average surface temperature The consequences of the rise in temperature There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natu

13、ral disasters worldwide,not only causing serious damage,but also costing human lives. Climate scientists have warned that it we do not take appropriate actions, this warming trend will probably continue and there will be a higher price to pay. In fact,rlews reports are frequently broadcast about ext

14、reme rainstorms and heatwaves causing deaths and economic losses.The solutions to reducing greenhouse gas emissions Continued greenhouse gas emissions will result in further warming and long-lasting changes tothe global climate. This requires the attention of people all over the world. Governments n

15、eed to consider making policies and taking appropriate actions and measures to reduce greenhousegas emissions. We as individuals,can also reduce our carbon footpript by restricting theamount of carbon dioxide our lifestyles produce.It is our responsibility to seize every opportunityto educate everyo

16、ne about global warming, along with its causes and impacts,because this isthe most serious issue affecting all of us on this planet.So what will you do to help? What is the authors purpose of writing this text?The authors purpose is to inform the readers and inspire them to do whatever they can to deal with this problem.Earth provides enough to satisfy every mans needs, but not every mans greed. Mohandas K. GandhiHow do you understand the quote? U strong desire for more wealth, power贪婪贪婪