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课件网) Unit 2 Building the future Period 5 Extended reading(1) 文本理解与阐述 内容索引 学习目标 活动方案 学 习 目 标 1. Understand the text “Global warming: islands in hot water” by skimming & scanning； 2. Retell the text in your own words and write a summary of it. 活 动 方 案 Ⅰ. Choose the best answers to the following according to the text. ( ) 1. How much may the sea levels worldwide rise by 2100 according to what scientists expect A. By more than 1.6 metres. B. By at least 1.1 metres. C. By less than 0.5 metres. D. By at least 0.6 metres. Activity 1: Read the lines. [学生用书P33] D ( ) 2. What is NOT the most obvious sign of rising sea levels A. Sea water becomes fresher. B. Sea water flows into houses. C. Sea water reaches further inland. D. Sea water can be seen over ro A ( ) 3. What will happen to fish without healthy reefs A. The islanders won't have enough to eat. B. Fish will move away. C. The price of fish in the city will rise a lot. D. No fish will live in the sea. B ( )4. The mangrove trees may have the feature that _____． A. they might die away where there is no fresh water B. they can't grow without warm water C. they can be used to replace crops D. they can be planted where there is salty water D ( )5. How can islanders keep the damaging salt away from their crops A. They have to stay on the island for less time. B. They may get rid of salt from the sea water. C. They have to grow crops in containers. D. They irrigate the crops less to avoid using sea water. C Ⅱ. Answer the following questions according to the text. 1. What will be the result if ice sheets and glaciers at the North and South Poles melt 【答案】It will release additional water into the ocean, and then warm water takes up more room than cool water. As a result, the ocean becomes warm and sea levels rise further. 2. What are the effects of global warming on the Pacific islands 【答案】Firstly, increasing temperatures cause ice sheets and glaciers at the North and South Poles to melt, releasing additional water into the ocean, so sea levels rise further. Beaches or even whole islands disappear. Extreme temperatures generate extreme rainfall patterns. What is more, many coral reefs, which act as natural barriers and are home to a rich diversity of ocean species, are dying. Without healthy reefs, fish move away, and the islanders have less to eat. 1. Why is an entire village on Vanua Levu in Fiji mentioned in the text 【答案】It tells us that because of increasing global temperatures, many islanders have no choice but to move away from the ocean. The ocean has been part of their lives for generations, so it's really a hard decision for them. Many people like these islanders lose their homes because of global warming. Activity 2: Read between the lines. [学生用书P34] 2. What efforts are Pacific islanders making to save their homes and live ... ...
