必修五5unit1GreatScientists-reading-精品课件-公开课课件.pptVIP

I Promise! Pre-reading: It begins in the stomach and a severe case can lead to death without immediate treatment. The victims died very quickly from a loss of liquid after severe vomiting(呕吐) and diarrhoea(腹泻). Spread from one person to another. So it is an infectious Disease. John Snow defeats “King Cholera” What is the problem? The cholera was the most deadly disease of its day. Neither its cause, nor its cure was understood. Paragraph 1 Find a problem What is the question? Which theory to believe in. Paragraph 2 Make a question Two theories 1. Cholera multiplied in the air without reason. A cloud of dangerous gas would float around until it found its victims. 2. People absorbed it with their meals. What is the method? When another outbreak hit London in 1854, he was ready to begin his enquiry. 2. As the disease spread quickly through poor neighbourhoods, he began to gather information. Paragraph 3 Think of a method What are the results? Many of the deaths were near the water pump in Broad Street. 2. Some houses had no deaths. 3. The water was to blame. Paragraph 4 Collect results What happened to the pump water? The water was from the river polluted by the dirty water from London. Paragraph 5 Analyse results What evidence? A woman and her daughter who lived far away died of cholera after drinking the water. Paragraph 6-7 Find supporting evidence Draw a conclusion What conclusion? The polluted water carried the disease. How to avoid cholera? What should we pay attention to in our daily life in order not to get infected with all these infectious diseases? Heal the food left overnight Cook raw food thoroughly Wash hands often Keep away from flies choose fresh sea food Keep the kitchen clean Dispose rubbish properly. Drink boiled water 四、课文回顾 John Snow was a well-known physician in London in the 19th century. 1___ famous was he that he even attended Queen Victoria to ease the 2_____ (bear) of her babies. However, he decided to defeat