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1、Module 3The Violence of Nature王 ee， 大林帮二1 二仙人 下人 如何预防? 让我们到文中了解一下吧。 If wind speed reaches 40 miles per hourm the system iscalled “tropical storm”， and it gets a name. At 7S milesper hourm it becomes a hurricane.The hurricane season lasts from June to November.Ninety percent of all hurricanes hit in
2、August, Septembenm，and October. Section 工 和 Introduction 必 Reading 一 Pre-reading点点释疑一把课文读全5原文呈现- 读文清障-What Is a Tornado2?Atornadois a rotating2column of air from athunderstorme to theground. The most violentehave winds of more than 400kilometres pero hour.Almost all of them oceur inthe US，in the area fromTexas in the southeast toSouth Dakota in the north， | 一 3 En IE tropical/”troplkl/adj.热带的 En
