1、LESSON 3 EPIDEMIC EXPLAINED UNIT 9 HUMAN BIOLOGY目录页contentsPre-readingIPost-readingIVFast ReadingIILanguage and Grammar VIII Intensive Reading HomeworkPre-readingPre-readingWhat epidemics do you know about?What do you know about epidemics?Tick()the statements that you think are correct.pAn epidemic
2、is the rapid spread of an infectious disease.pAn epidemic can affect a large number of people in a given population.pAn epidemic can occur within a short period of time,usually two weeks or less.Pre-readingWhat do you know about epidemics?Tick()the statements that you think are correct.pAn epidemic
3、may spread to several countries or continents.pSome common viruses,such as the common cold,are not epidemics.pA new epidemic can be a different variation of a virus that people caught in the past.Pre-reading Fast Reading1.What is an epidemic?2.How can a disease be classified as an epidemic?An epidem
4、ic is the name given to an infectious disease that rapidly spreads to a large number of people within a short period of timeusually two weeks or less.Fast-readingEach disease can only officially be classified as an epidemic once a certain number of deaths have occurred from the disease.Read the pass
5、age and answer the following questionsFast-readingBird Flu1918 Spanish FluBlack DeathSARSEbola Virus Disease Read and circle all the epidemics mentioned in the passage.Intensive ReadingIntensive readingNamePeriodPlacesDeath tollBird FluEpidemics in the Roman EmpireThe Black DeathComplete the table a
6、bout the epidemics mentioned.since 1997500-550 CE1330sRomeAsia and Europemore than a hundred liveshalf the populationIntensive readingNamePeriodAreasDeath tollThe Spanish FluSARSComplete the table about the epidemics mentioned.1918the end of World War 2002-2003China,Canada,Vietnam and Singapore50 mi
7、llion people Intensive readingNamePeriodAreasDeath tollEVDComplete the table about the epidemics mentioned.2013-2016West Africamore than 11,310 deathIntensive readingpwhen epidemic startedpexamples of epidemicsptreatmentspbaseline number of deaths of epidemicsTick the aspects that mentioned in the p
8、assage.Use a diagram to demonstrate in a logical way how they are organised.pdefinitionpwhen it endedppossible causes of epidemics ppossible solutionsEpidemicswhen epidemic starteddefinitionwhen it endedexamples of epidemicsbaseline number of deaths of epidemicswhatHow to classifyIntensive readingPo
9、st-readingPost-reading1.What are the main features of an epidemic?Give at least two examples to illustrate your points.2.What should different countries do to prevent outbreaks of epidemics in the future?Why?3.What does the title mean to you?What does the writer want to convey in the passage?4.What
10、do you think the passage is written for?Discuss the questions.Post-reading1.What are the main features of an epidemic?Give at least two examples to illustrate your points.Discuss the questions.The main features of an epidemic:(1)it is an infectious disease(2)it spreads rapidly to a large number of p
11、eople within a short period of time(3)a certain number of deaths have occurred from the disease.The common cold is not an epidemic because while it affects many people,it does not cause deaths.SARS affected many people and caused many deaths,so it is considered an epidemic.Post-reading2.What should
12、different countries do to prevent outbreaks of epidemics in the future?Why?Discuss the questions.Countries will need to work together to do this because teamwork among nations across the globe can save lives.This is a good example of building a community with shared future for mankind.Post-reading3.
13、What does the title mean to you?What does the writer want to convey in the passage?Discuss the questions.The title means that the passage will explain questions about epidemics.The author wants to convey the information that we are always on our way to find an explanation to epidemics so as to find
14、cure.It also implies that epidemics occurred naturally and inevitably.We can only explain it,and cannot prevent it or stop it completely now.Post-reading4.What do you think the passage is written for?Discuss the questions.This is a popular science article.It is more likely to be written for people who are interested in this topic or who have a lot of questions or misunderstanding of epidemics.VIHomeworkHomeworkSearch online and find some information about epidemics in China of Asia.Report your information to the class.
