北师大版选修七Unit 21 human biology Lesson 3 Epidemics Explained学案 (2).docx

unit 21 lesson 3 epidemics explained学案epidemics throughout history 本节主要学习第21单元第3课。本节课是阅读课。主要是让学生通过阅读课文了解历史上的传染病。认识到传染病的危害性，以提高警惕。学 习 目 标1. 提高同学们的阅读能力2. 了解传染性的疾病，提高警惕。3. 掌握课文大意，了解课文结构。自主学习identify the structure of the problem-solving discursive essay.1._2._ _3._4._探究互动exercise 4 page 39 write down your answers.1._ 2._ _3._ _4._ _5._例题分析 write about the pictures below. try to use as many newly learned words as possible. last friday, attack, lose, medical teams, acute, epidemic, spray medicineprohibit sb. from doingwhat happened？ what is the problem? what has been done?_课堂检测read the text again and fill in the missing information based on the text.five killer 1. _ are talked about in the text. they are justinian plague，2._, 3._, sars and 4._. justinian plague, the earliest 5. _ about 500-550 ad when the roman 6. _ was attempting to 7._ the roman empire. this epidemic 8._ through north africa, the middle east and europe. it is supposed to 9._ up to 50% of the areas population and thus led to the fall of 10._.the sars epidemic appeared in 2002, as it was completely new, there were no 10_ drugs or 11._ to treat it and doctors were not sure how to prevent it either. however, ever since then, 12._ have been done on 13. _ to prohibit any further 14._. thanks to modern technology, medical workers all over the world are able to work