(
课件网) Unit One SCIENCE AND SCIENTISTS John Snow Defeats "King Cholera" Now, let’s enjoy a video. What have we Chinese people experienced since the end of 2019 An outbreak of COVID-19 suddenly hit China. COVID-19 （新冠肺炎） What do you know about COVID-19 COVID-19 infectious unknown cause difficult to cure spread easily Discussion deadly give up fight A deadly disease called cholera hit London in 1854. 127 people died in the first three days. Many thousands of terrified people died every time there was an outbreak. John Snow Defeats “King Cholera” Who What How does he defeat it What can you learn from the title beat /fight against 2 3 4 1 5 Read the text quickly and try to get the main idea of each paragraph with key words. The text What Who How The truth Results and significance Structure of the text _____ caused the cholera Which _____ of the two is correct Marking the deaths on the_____ Get the _____from the map The _____ seems to be blame for the cholera. Two other _____ Polluted _____ carried the virus. What theory map information water deaths water Find a problem Ask a question Analyze the results Collect data Draw a conclusion Find supporting evidence Think of a method stages of a scientific research Para 1 1.Who is John Snow 2.What is the basic information about cholera Who is John Snow A famous doctor in London. relationship John Snow attended to Queen Victoria when she gave birth. The basic information about cholera What It is one of _____ because it causes severe symptoms，even _____. When _____ Where _____ What consequence _____ germs of cholera the most feared diseases death in the early 19th century Europe Millions of people died. How did cholera spread Cholera was caused by_____. bad air Cholera was caused by_____ _____. an infection from germs in food or water In John's opinion,which theory is correct Para 2 How did John Snow find the clue The map gave a valuable clue about the cause of the disease. Para 3 Broad Street It seemed that the water from the pump was to blame. Public house What was to blame Many deaths happened here. No deaths happened here. Why It was believed that cholera was caused by bad ____or germs in _____. Snow_____ the places where the people who_____had lived. Many deaths occurred near the _____ in Broad Street. Some people who hadn't drunk _____ from the pump lived. A woman and her daughter died in another part of London after_____ _____. The pump water carried _____. The _____of the pump was removed. air food or water marked on a map died water pump drinking the water from the pump cholera germs handle Para 2,3 Read paragraph 2＆3 again and complete the chart below. the water find a problem and ask a question think of a method and collect data draw a conclusion analyze the results and find supporting evidence solve the problem Para 4,5 Read the two paragraphs carefully and choose the correct answer. 1.What caused the outbreak of cholera in London ... ...
