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Read the passage and number these events in the order that they happened. __ John Snow began to test two theories. __ An outbreak of cholera hit London in 1854. __ John Snow marked the deaths on a map. __ He announced that the water carried the disease. __ John Snow investigated two streets where the outbreak was very severe. __ King Cholera was defeated. __ He found that most of the deaths were near a water pump. __ He had the handle removed from the water pump. 1 2 3 4 5 6 7 8 Read the text “John Snow Defeats ‘King Cholera’” carefully, and fill in the blanks. Collect data on those who were ill or died and where they got their water. Think of a method Which theory is correct? ★Theory one: Cholera 2. _________ in the air and floated around until it found its victims. ★Theory two: The disease went into people’s bodies through their 3. ________. Make a question What cause cholera? Thousands of people died of cholera, but nobody knew the 1. ________ of the serious disease. Find a problem How John Snow defeats “King Cholera”a cause? multiplied meals ? * 人教课标 高二 必修 5 Unit 1 1. To get some information about some famous scientists 2. To understand the passage John Snow defeats “King Cholera” 3. To summarise the main idea and retell the stages for John Snow’s research 4. To know how to protect people from infectious diseases There are some great scientific achievements that have changed the world. Can you name some of them? What do you know about great scientists? 1. Who discovered that objects in water are lifted up by a force that helps them float? an ancient Greek mathematician physicist Archimedes (287-212 BC) Archimedes’ principle 阿基米德定律(浮力) Levers(杠杆) His great findings: Give me a place to stand, and I shall move the world. —— Archimedes If you put an object into water the water pushes the object up. It rises and partly floats. The force of the water pushing it up is the same as the weight of the object. 2. Who wrot
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