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高中英语 Unit22 Environmental Protection Period 1 Reading Comprehension导学案 北师大版选修8-北师大版高二选修8英语学案

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Unit22 Environmental Protection Period 1 Reading ComprehensionUnit 22 Environmental Protection Lesson3 Natural DisastersPeriod 1 Reading ComprehensionStep1:Learning Aims(学习目标):1.To learn about some natural disasters.2.To practice students' reading skills — fast reading and careful reading. Important and Difficult Points(重难点):To improve students’ reading skills. Step2:Lead-in(情景导入)Let’s appreciate some pictures together.Step3: Preview detection(检查预习)Use the strategies to complete the gaps in the text(1-5)with these sentences(a-g). There are two extra sentences you do not need.But evidence shows that 73.000years ago there was a much greater eruption.(b) Even Europe has suffered and large areas have been underwaer.(c) That is probably not the most important factor either.(d) Third, the other bits of land you might have been able to farm are now useless.(e) On top of that, add global warming.(f) For example, the yellow river, once famous for flooding, failed to reach the sea at all for 226 days in 1997(g) One answer is overpopulation.Step4:Self-study(学生自学)Read the text again and answer these questions.1.What is the attitude of the journalist towards the future?2.Who are most likely to be the victims of natural disasters?3.Why are there now more hurricanes, floods and droughts?4.Why are volcanoes and earthquakes more dangerous now?5.What could be the biggest threat to the planet in the future?6.What effects might this threat have?Step5: Group-work(合作探究)In the last ___ years , there are more and more disasters such as _____ , ________, thunderstorms, earthquakes, ________, volcanic _________and _____ fires all over the world.Why are so many disasters ? One of the reasons is over- __________.__ additi...

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高中英语 Unit22 Environmental Protection Period 1 Reading Comprehension导学案 北师大版选修8-北师大版高二选修8英语学案

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