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课件网) LESSON 3 EPIDEMIC EXPLAINED UNIT 9 HUMAN BIOLOGY Pre-reading What epidemics do you know about What do you know about epidemics Tick ( ) the statements that you think are correct. An epidemic is the rapid spread of an infectious disease. An epidemic can affect a large number of people in a given population. An epidemic can occur within a short period of time, usually two weeks or less. Pre-reading What do you know about epidemics Tick ( ) the statements that you think are correct. An epidemic may spread to several countries or continents. Some common viruses, such as the common cold, are not epidemics. A new epidemic can be a different variation of a virus that people caught in the past. Pre-reading 1. What is an epidemic 2. How can a disease be classified as an epidemic An epidemic is the name given to an infectious disease that rapidly spreads to a large number of people within a short period of time—usually two weeks or less. Fast-reading Each disease can only officially be classified as an epidemic once a certain number of deaths have occurred from the disease. Read the passage and answer the following questions… Ⅰ．阅读理解 ( )1．Which of the following can cause epidemics according to the passage A．A virus carried into an area. B．Fewer people living in an area. C．People catching a common cold. D．A woman having a high fever. 【答案】A ( )2．What can we know about bird flu according to Paragraph Four A．It first appeared in 1987． B．It has taken over one thousand lives. C．It is a modern adaptation of the 1918 Spanish Flu. D．People don’t worry that it could be the next global epidemic. 【答案】C ( )3．What is the visible symptom of The Black Death A．The eyes become terribly red. B．The body has black spots. C．People have a high fever. D．People cough a lot. 【答案】B ( )4．Which of the following epidemics is believed to have been the most severe in history A．The SARS.B．The Ebola Virus Disease. C．The bird flu.D．The Spanish Flu. 【答案】D ( )5．What does the writer want to convey in the passage A．He wants to tell us the history of epidemics. B．He wants to call on the countries worldwide to unite to conduct thorough and systematic medical research on epidemics. C．He wants to warn us of the danger of epidemics. D．He wants to give the definition of an epidemic. 【答案】B Fast-reading Bird Flu 1918 Spanish Flu Black Death SARS Ebola Virus Disease Read and circle all the epidemics mentioned in the passage. Intensive reading Name Period Places Death toll Bird Flu × Epidemics in the Roman Empire The Black Death × Complete the table about the epidemics mentioned. since 1997 500-550 CE 1330s Rome Asia and Europe more than a hundred lives half the population Name Period Areas Death toll The Spanish Flu × SARS × Complete the table about the epidemics mentioned. 1918—the end of World War Ⅰ 2002-2003 China, Canada, Vietnam and Singapo ... ...
