1. Unit 21 Human Biology

2. Epidemic Explained

3. SARS Virus

4. Look at the Key Words. Which of these diseases can be epidemics? AIDS cancer flu headache heart disease stomachache

5. Work in pairs. Do you think these statements are true (T) or (F)? 1.Flu kills millions of people every year. 1.Most diseases are very new. 2.Epidemics have affected historical events. 4. It takes years for a disease to spread worldwide. T T T T

6. 5. Epidemics can wipe out up to half of the population in urban areas. 6. More people died of a flu epidemic in 1918 /1919 than died in World War Ⅰ. T T

7. Reading strategies: Sequencing of information 1.Read the text with gaps to get the general idea and see how it develops, e.g. epidemics through history on page39

8. 2Read the sentences before and after the gaps to give you an idea of what the beginning or end of the missing paragraph might refer to, e. g. paragraph 2 might begin with a reference to a historical event or epidemics..

9. 3. Read the missing paragraphs and look for these references. 4. If a paragraph doesn’t seem to fit, you may have made a mistake, so carefully reread each paragraph.

10. Match the five paragraphs (A-E) with gaps 3, 5, 8, 10and 12 in the text. ABCDEABCDE  Paragraph 3  Paragraph 12  Paragraph 8  Paragraph 10  Paragraph 5 Reading

11. Complete these sentences about the text in your own words. 1.We know that epidemics have been with us for thousands of years because…. 2.A epidemic may have been one of the key causes of the fall of the Roman Empire because… 3.The ‘Black Death’ spread rapidly in Asia and Europe because… 4. SARS spread from Hong Kong to Canada, Vietnam and Singapore because… 5.Many doctors and nurses became ill with SARS because…

12. 1 trial a) complete 2 prohibit b) data 3 pause c) delay 4 tendency d) habit 5 acute e) media 6 statistics f) pill 7 routine g) prevent 8 press h) severe 9 tablet i) test 10 thorough j) trend 6 Match the words from the passage (1-10) with their meanings (a-j).

13. 7.Complete the sentences with these words. 1. 1. The doctor wrote out a ________ for my medicine. 2. 2. When someone dies, it is natural to _________. 3. 3. I have a lot of ______ in Jim. I ’ m sure he ’ ll do the right thing. 4. 4. Tell me your _______ and I will try to tell you what disease you have. 5. 5. If you study in a _______ way, you won ’ t leave anything out. 6. 6. The SARS virus affects lung ____________. Mourn, faith, symptoms, prescription, systematic, tissue prescription mourn faith symptoms systematic tissue