1、Unit 1 Great ScientistsReadingScientists:What do they have in commommade a great achievementsucceeded in their scientific careerovercome many difficultiesmade great contributionsJohn Snow Defeats “King Cholera”Who is John Snow?What is “King Cholera”?How do you understand the word “defeats”?Fast read

2、ing John Snow,(1813-1858) British, is an anesthetist（麻醉師）（麻醉師） and more importantly , “ Father of epidemiologist （流行病學家）（流行病學家）”.John Snow Defeats “King Cholera”Who is John Snow?What is “King Cholera”?How do you understand the word “defeats”? Name of illness Symptom(癥狀癥狀) Aftereffect (后果后果)cholera (

3、霍亂霍亂), an infectious diseasesevere vomiting (嘔吐嘔吐) and diarrhoea (腹瀉腹瀉)die quickly from a loss of liquidJohn Snow Defeats “King Cholera”Who is John Snow?What is “King Cholera”?How do you understand the word “defeats”? Whats the main idea of the passage?A.John Snow was a well-known doctor in London.B

4、.The cause of Cholera was polluted water.C.The source of all drinking water should be examined.D.How John Snow did a scientific reaserch to collect, analyze data and find the cause of the disease and solved it .draw a conclusion Think of a method Collect results Make a questionFind a problem Analyse

5、 the results Find supporting evidenceSteps in doing a scientific research: Careful readingPara-graphSteps in doing a scientific researchDetailed information1Find a problem2Make a question3Think of a methodWhat cause cholera?Which theory is correct?Gather information from the place where the cholera

6、outbreak was severeFill in the blanks. 4Collect results5Analyse results6find supporting evidence7Draw a conclusionmark information on a map to find out where people died or did not die.Analyse the water to see if that is the cause of the illness.Find other evidence to support the analysis.The water

7、is to blame. The source of all drinking water should be examined so that it is safe.A map of Broad StreetBroad StreetMany deaths happened here.No death happened here.It seemed the water from the pump was to blame. What did he do next?PubDiscussion Gregor Mendel (孟德爾孟德爾)used peas to show how physical characteristics are passed from parents to their children. Do you think how did he prove his new idea?With the help of the steps used in scientific research?1.Read the text three times and learn the new w