高中英语人教新课标必修五Unit1Readingppt课件.pptxVIP

Unit 1 Great Scientists 1 ⑦ Draw a conclusion ③ Think of a method ④ Collect results ② Make a question ① Find a problem ⑤ Analyse the results ⑥ Find supporting evidence 2 Let’s get to know how Dr. John Snow defeated “King Cholera” in the reading passage: John Snow Defeats “King Cholera” 3 Skimming: What’s the purpose of the text? A. To show us how difficult it was to find a cure for cholera. B. To tell us how John Snow found the cause of cholera and defeated it. C. To show us how difficult it was to carry out experiments at that time. D. To tell us the way cholera spread and how serious it was. 4 Skimming: Answer the questions: ①What happened in 1854? ②Which theory did John Snow believe in? ③How many people died in 10 days? ④Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? ⑤What was to blame for the spread of the cholera? ⑥what did John Snow suggest doing to prevent the cholera from spreading again? 5 Task: Answer the Questions 1. What happened in 1854? Cholera outbreak hit London. 2. Which theory did John Snow believe in? People absorbed cholera into their bodies with their meals. 3. How many people died in 10 days? 500 6 4. Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? These families had not drunk the water from the Broad Street pump. 5. What was to blame for the spread of the cholera? The polluted water carried the germs. 7 6. What did John Snow suggest doing to prevent the cholera from spreading again? John Snow suggested that the source of all water supplies be examine. 8 Scanning: Task1 Number these events in the order that they happened. _2_____John Snow began to test two theories. __1____An outbreak of cholera hit London in1854. 3______ John Snow marked the deaths on a map. __7____He announced that the water carried the disease. __4____ J