高中英语必修5 unit1 Great scients 课件人教版.ppt

Unit 1 Great scientists Word study ( P 92)  Pair work Read the new words aloud on page 92, and pay attention to the pronunciation. Period 1 Warming up Guessing Our school will hold an exhibition of some famous scientists around the world. Whom do you think we will choose? Listen to my description and guess. Reading 2. What do you know about infectious diseases? What do you know about cholera? Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. Cholera is an infectious and often deadly disease causing severe diarrhoea(腹泻) and vomiting (呕吐), common in hot countries. Predicting: Read the title “John Snow Defeats King Cholera” and look at the pictures, then guess what the passage may be about. A. John Snow was a well-known doctor in London. B. The cause of Cholera was polluted water. C. The source of all drinking water should be examined. D. How John Snow collected, analyzed data to find the cause of the disease and solved it. I. Skimming: 2. Read and do the true or false questions. 1. Cholera was the most deadly disease of its day. 2. John Snow attended Queen Elizabeth I to ease the birth of her babies. 3. John Snow got no interest in two theories explaining how cholera killed people. 4. In 1854, the cholera outbreak was so severe that 500 people had died in 10 days. 5. John Snow found that the polluted water was the cause of the cholera. III. Further reading 1.Read and answer 1 Why couldn’t the cholera be under control at first? 2 Which theory did John Snow believe in? 3 John Snow finally proved the theory he believed by ________. A. gathering information with the help of a map B. looking into the source of the water for Broad Street and Cambridge Street C. Separating those who suffered cholera from those who didn’t D. Both A and B 4 To prevent the cholera from spreading again, what did John Snow do? 1 Why couldn’t the cholera be under control at first? 2 Which