2020年北师大版高中英语选修8课件:Unit22 Warm--up & Lesson 1 Global Warming—Pre--reading
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1、,Unit 22 Environmental Protection,We need to protect the Earth because it is our home. 我们需要保护地球,因为它是我们的家。,单元核心素养:思维品质,Today rainforests are disappearing from the surface of the globe.Despite growing international concern,rainforests continue to be destroyed at a pace of over 80,000 acres per day.Wor
2、ld rainforest cover now stands at around 2.5 million square miles.Human activities have had an effect on much of this remaining area. Deforestation(滥伐森林) of rainforests has a global effect on species disappearance and the loss of renewable resources.Most people agree that the problem must be solved,
3、but the means are not as simple as building fences around the remaining rainforests or banning the wood trade.Economic,political,and social pressures will not allow rainforests to continue to exist if they are completely closed off from use and development.,话题导入,So,what should be done to protect rai
4、nforests?The solution must be based on what is very practical and depend on developing an approach built on the development of rainforests.Beyond the responsible development of rainforests,efforts to restore damaged forest lands along with protected areas are the key to securing rainforests for the
5、long-term benefits they can provide for mankind. Historic approaches to rainforest protection have failed,as shown by the increased rate of deforestation.In many regions,closing off forests as untouchable parks and reserves has neither improved the quality of living or economic opportunities for the
6、 rural poor,nor stopped forest clearing by illegal woodcutters and developers.,The problem with this traditional approach to preserving wildland in developing countries is that it fails to develop proper economic motives(动机) for preserving the forest.Local people and the government itself must see e
7、conomic returns to prove the costs of maintaining(维持) parks from economic activities.,阅读短文,判断正(T)误(F) 1.The damage to rainforests has caused the loss of renewable resources.( ) 2.Economic returns cant make a difference in protecting rainforests.( ),查看答案,T,F,PART 1,读前清障,PART 2,课文理解,Warm-up & Lesson 1
8、 Global WarmingPre-reading,PART 1,读前清障,匹配左边的单词与右边的汉语意思,查看答案,1.trap A.原则,道德准则 2.botanical B.顾问 3.consultant C.使困住 4.reserve D.植物的 5.principle E.保护区,第一组,6.boycott A.保护 7.corrupt B.一致的意见 8.conservation C.贪污受贿的,腐败的 9.consensus D.超出 10.beyond E.(联合)抵制,第二组,查看答案,查看答案,11.relevant A.反弹 12.bounce B.巧合 13.agri
9、culture C.迫使(某人)陷于不幸的境地 14.coincidence D.有关的 15.condemn E.农业,第三组,16.sacrifice A.代替品,代用品 17.advocate B.回收利用 18.recycle C.威胁 19.substitute D.牺牲;献出 20.threaten E.主张,提倡,第四组,查看答案,PART 2,课文理解,Tell whether the following statements are true(T) or false(F). 1.Global warming will surely be the biggest environ
10、mental problem in the 21st century.( ) 2.The temperature of the Earth depends on carbon dioxide.( ) 3.Without carbon dioxide,we couldnt live on the Earth.( ) 4.Without human beings activities,there wouldnt be global warming.( ) 5.Not just the government but all of us have a responsibility to do some
11、thing to help reduce global warming.( ),Step 1 Fast-reading,T,F,F,T,查看答案,F,Read the passage carefully and choose the best answer. 1.The main purpose of the first paragraph is . A.to introduce the topic of global warming to the readers B.to remind the readers of human activities in the past C.to intr
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