Unit 3 Environmental Protection Reading and Thinking 课件-2022-2023学年高中英语人教版（2019）选择性必修第三册

选择性必修三 Unit 3 Earth provides enough to satisfy every man’s needs, but not every man’s greed. ——Mohandas K Gandhi 地球能满足每个人的需要,但满足不了每个人的贪婪。 ——莫罕达斯 卡拉姆昌德 甘地 P. 26 Discuss climate change 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? The graph shows the change in the Global Surface Temperature between 1920 and 2016. It shows the temperature anomaly, which shows how much the temperature has risen above what it would usually be at a base level. I haven’t seen this photo, but I have seen photos like it. The story is that the polar bear starved to death because it could not find enough to eat. 2 Read the text and answer the questions. 1 What happened to the polar bear in the photo? Why did the writer 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 author’s purpose of writing this text? P. 26 P. 26 2 Read the text and answer the questions. 1 What happened to the polar bear in the photo? Why did the writer 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 author’s purpose of writing this text? P. 26 The author’s purpose is to inform the reader and inspire them to do whatever they can to deal with this problem. 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. The “natural” greenhouse effect is important because it warms the Earth’s surface and keeps it habitable. High greenhouse gas emissions lead to more heat energy being trapped in the atmosphere