Unit 9 Human Biology Lesson 3 Epidemics Explained 课件-2023-2024学年高中英语北师大版（2019）选择性必修第三册

1 Unit 9 Human Biology Lesson 3 Epidemics Explained 谢引 2 谢引 3 Epidemics infectious disease spread rapidly within a short period of time a large number of people are infected cause a certain number of deaths What are the features of an epidemic? What is an epidemic? An epidemic is an infectious disease that rapidly spreads to a large number of people within a short period of time, and it causes a certain number of people. 5 Read and match Part 1(Para. 1) A. The ways to solve epidemic. Part 2(Para. 2) B. The criteria(标准) of judging an epidemic. Part 3(Para.3-8) C. The epidemics in history. Part 4(Para.9) D. The definition of an epidemic. 谢引 Epidemics when epidemics started examples of epidemics baseline number of deaths of epidemics definition when it ended What aspects of information are mentioned in the passage? (EX4) Read and complete the table. Name Period Places Death toll（死亡人数） Bird Flu Epidemics in the Roman Empire The Black Death The Spanish Flu SARS EVD In 1997 More than a hundred lives Rome Half of the area’s population In the 1330s In 1918 50 million people China, Canada, Vietnam and Singapore West Africa More than 11,310 death About 500 and 550 CE Asia, Europe 2002-2003 2013-2016 Details about COVID-19 Infected person: More than 400 million Death: More than 6 million Related countries: countries and regions all over the world Time: began in 2020. 8 谢引 8 What can we do to protect us from epidemics such as COVID-19? Wear a mask to prevent infection Wash your hands often to pay attention to hygiene （卫生） Open the window and ventilate (通风) the rooms Go out less and don’t gather Don’t stay up late and exercise regularly Get vaccinated against COVID-19 Homework: Write a short passage about how to prevent epidemics. You can use words and phrases below. 1. wear a mask to prevent infection 2. wash y