(
课件网) Unit 9 Human Biology Lesson 3 Warming-up 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. □ 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. √ √ √ √ √ √ Warming-up Read the passage quickly and answer the questions. 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. Each disease can only officially be classified as an epidemic once a certain number of deaths have occurred from the disease. Warming-up Read the passage again and find all the epidemics mentioned in the passage. Epidemics bird flu ——— line 19 1918 Spanish Flu ——— line 26 Black Death ——— line 33 SARS ——— line 43 Ebola Virus Disease ——— line 53 Warming-up SARS (Severe Acute Respiratory Syndrome) 严重急性呼吸道综合症，惯称 “非典型肺炎”，简称“非典”，是可致命的传染病。 Ebola Virus Disease (EVD) 埃博拉病毒性疾病，是一种死亡率高的急性出血性传染病。 Reading Name Period Places Death toll Bird Flu × Epidemics in the Roman Empire The Black Death × The Spanish Flu × SARS × EVD Read the passage carefully. Complete the table about the epidemics mentioned. Then choose one disease to talk about with a partner. since 1997 more than a hundred lives 500 — 550 CE Rome half the population 1330s Asia and Europe 1918 — the end of World War I 50 million people 2002 — 2003 China, Canada, Vietnam and Singapore 2013-2016 West Africa more than 11310 death Post-reading What are the main features of an epidemic They should work together because teamwork among nations across the globe can save lives. This is a good example of building a community with shared future for mankind. 2 What should different countries do to prevent outbreak of epidemics in the future Why Post-reading ◆ The title means that the passage will explain questions about epidemics. 3 What does the title mean to you What does the writer want to convey in the passage ◆ The author wants to convey the information that we are lways on our way to find an explanation to epidemics so as to find cure. It also implies that epidemics occurred naturally and inevitably(不可避免地). We can only explain it, and cannot prevent it or stop it completely now. Post-reading Post-reading Who do you think the passage is written for This is a popular science article. It is more likely to be written for people who is interested in this topic or who has a lot of questions or misund ... ...
