(2019版)新人教版选择性必修第二册Unit 1Reading and thinking ppt课件 (2).ppt

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1、Reading & ThinkingTeaching GoalsEnable the Ss to get to know some knowledge about Cholera. Enable the Ss to understand the passage well.Let the Ss learn some reading skills by scanning and skimming. To learn from the great scientists and develop the noble spirits Name some famous scientists you know

2、 and tell something about them.Lead inWhich scientist discovered that objects in water are lifted up by a force that helps them float?ArchimedesWho used peas to show how physical characteristics are passed from parents to their children?Gregor MendelWho put forward a theory about black holes?Stephen

3、 HawkingZhong Nanshan, who has been committed to the study, prevention and treatment of major respiratory diseases and significantly contributed to the COVID-19 fight, was recommended for the Medal of the Republic nomination.coronavirusbe infected withconfirmed/suspected casesvaccine(疫苗)(疫苗)/krnvars

4、/ 冠状病毒冠状病毒感染感染疫苗疫苗Besides coronavirus, what other kinds of epidemics(流行病) do you know? Bird-flu malaria plague(鼠疫) Ebola Smallpox(天花)CholeraJohn Snow Defeated “King Cholera” Look at the picture, the title and the map, guess what the content of the text is. Then skim it quickly to see if you are righ

5、t. The text is mainly about _ and _ he defeated king cholera.howJohn Snow Discuss the following stages of scientific research in groups. what order would you put the seven stages in?analyze the resultsask a questionDraw a conclusioncollect data Find a problem Think of a method find supporting eviden

6、ce 5274163Read the passage quickly and fill in the following blanks with suitable words.Para 1:Find a problem: What caused a _?Para 2:Ask a question:Which _ is right?Para 3: Think of a method:Gathered _,analyzed the results and removed the _ of the pump.Para 4:Draw a conclusion:The truth was that pu

7、mp had been _ by waste.Para 5: Take measures:Water companies began to sell clean water and the threat of the disease _.John is considered the _ of epidemiology.Step 1Fast-readingcholeratheoryevidencehandleinfecteddecreasedfather01Step 2Careful-readingRead Para 1 carefully and answer the questions.1.

8、 Why was the disease called “King Cholera”?Cholera used to be one of the most feared diseases in the world,which caused severe diarrhoea, dehydration, and even death.And when an outbreak of cholera hit Europe, millions of people died from the disease.021.How did doctors think Cholera spread?2.What w

9、as Snows opinion about the theories?In general,doctors in those days had two contradictory theories. One theory was that bad air caused the disease.Another was that cholera was caused by an infection from germs in food or water.Snow subscribed to the second theory, but he still needed proof. A map o

10、f Broad Street-”Cholera Map”A map of Broad Street-”Cholera Map”Read Para 3 carefully. Step 2Careful-readingWhat method did Snow use?1. Which houses had more than 4 deaths and which had no death in Broad Street?2.What did Snow conclude?Multiple deaths happened here.No death happened here.Finding Evid

11、enceStep 2Careful-readingRead Para 2 and 3 again to complete the chart.It was believed that cholera was caused by _ or germs in _.The pump water carried _.Many deaths occurred near the _ in Broad Street.Some people who lived near the pump worked in the pub and _ drunk the water from the pump ,and li

12、ved.A woman and her daughter died in another part of London after _Snow _ the places where people who_ had lived.Snow had the _ of the pump removed.ABCDEbad airfood or watermarked on a mapdied water pumphad notdrinking water from the pumpcholera germshandleSupporting evidenceF Read Para 4 carefully

13、and answer the questions. 1.What caused choleras outbreak in the Broad Street?2.How were people infected with the virus of cholera?04 The truth was that the water from the Broad Street pump had been infected by waste.Some companies sold water from the River Thames that was polluted by raw waste. The

14、 people who drank this water were much more likely to get cholera than those who drank pure or boiled water. Read Para 5 carefully and fill in the blank The result:Through Snows tireless , water companies began to sell , and the threat of cholera around the world saw a substantial . , cholera is sti

15、ll a problem.Each year, of people around the world get cholera and many it.Snows contribution:Fortunately, we now know how to cholera, the work of John Snow. , in his use of maps and statistics, Snow _the way scientists study diseases.Snows achievement:Snow is considered .effortsclean waterdecreaseHowevermillionsdie frompreventthanks toMoreovertransformedthe father of modern epidemiologyFather of hybrid ricekeep people away from hungerDespite the danger of infection, devote to the research of COVID-19 What qualities and scientific spirits do they have in common?Discussion2021

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