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Unit 4 EarthquakeAnything unexpected may happen.Natural disasterWord studyWhat kind of natural disasters do you know ? floodDroughttyphoonhurricaneTsunamiice storm/hailstonesnow slidemudflow泥流The sandstorm in Beijing volcanoForest fireearthquakeDo you know when and where the greatest earthquake of the 20th century happened in China?July 28, 1976Tangshan, HebeiBefore the earthquake: a prosperous cityProsperous ['pr?sp(?)r?s] adj. 繁荣的；兴旺的 after the earthquake: in ruinsDo you want to know more about it?What happen? How did it happen?Why did it cause so terrible a result? A Night the Earth Didn’t Sleep 1st time reading*Please read the text quickly! *Pay attention to the first sentence of each paragraph!*Try to get the main idea! Time: Place: What disaster: Before the disaster: Damage:Resc