Unit 1 Science and scientist Reading and thinking（ppt课件） (2)-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Period 2Warming up and Reading Quiz Quiz！【必修必修 三三】Unit 2 Unit 2 Mother of Ten Thousand BabiesMother of Ten Thousand Babies 2,2,She is the the first woman who is She is the the first woman who is awarded Nobel Prize in China.awarded Nobel Prize in China.【选必一选必一】Unit Unit 1 1The Man Who Changed Our Th

2、e Man Who Changed Our Understanding of the Universe Understanding of the Universe【选必一选必一】Unit Unit 1 1 Chinese scientist,Chinese scientist,The Medal of the Republic,The Medal of the Republic,1 1“The father of Hybrid Rice”,“The father of Hybrid Rice”,【选必一选必一】Unit 5Unit 5 They were infected with Chole

3、raDo you know how to prove a new idea in scientific research?Draw a conclusionThink of a methodCollect resultsMake a questionFind a problemAnalyze the resultsRepeat if necessary Find a problemMake a questionThink of a methodCollect resultsAnalyze the resultsFind supporting evidenceDraw a conclusionW

4、hat do you know about cholera?Cholera: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(呕吐呕吐)and diarrhoea(腹泻腹泻).John SnowJohn Snow defeats“king cholera”A physician What does the text tel

5、l us?The text is mainly about _ and how he _ _ _.JohnSnowdefeated kingcholeraFind out the main idea of each paragraph.John Snow wanted to use his knowledgeto solve _.He got interested in _ _.He needed to prove the second theory was _.He found out that _ _ wasthe cause of cholera.Para.1Para.2Para.3Pa

6、ra.4Para.5、6Para.7water carried the disease.Finally,“King Cholera”was _._ 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

7、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.Read the passage and number these events in the order that they happenedWho is John Snow?A famous doctor in London.relationship attended her as her pe

8、rsonal physician2.What else do you know about John Snow?He thought about helping ordinary people _to cholera.Though the cause and the _ of it were unknown,he wanted to face the _ and solve the problem.exposedcurechallenge3.Why people thought Cholera a deadly disease?Neither its cause,nor its cure wa

9、s understood.1.What were the two theories about the cause of cholera?2.Which did John Snow want to prove?3.What was his method of doing the research?a.Cholera multiplied in the air.b.People absorbed cholera into their bodies with their meals.The second one.To gather information in two particular str

10、eets.A map of Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water from the pump was to blame.Public houseMany of the deaths were near the water pump in Broad Street.deathPart of Snows Cholera Map What valuable clue did he get about the cause of t

11、he disease?What happened to the pump water?The water was from the river which had been polluted by the dirty water from London.What to do?Remove the handleThe disease slowed down.It couldnt be so usedso thatWhat happened?What extra evidence did he find?A woman and her daughter who lived far away but

12、 drank the water also died.The polluted water carried the disease.1.Suggested that the source of all water supplies be examined.2.Instructed the water companies not to expose people to the polluted water any more.To prevent cholera from spreading again,what did John Snow do?What should we do to avoi

13、d getting infected with cholera?My suggestions We should drink boiled water.We should remember to wash our hands often.We should keep away from flies.We should never throw rubbish at random.We should keep our living surroundings as clean as possible.John Snow made up his mind to help ordinary people

14、 _ to cholera.At that time,no one knew its cause or _.He knew it would never be _ until its cause was found.When another outbreak hit London in 1854,he began to gather information Finally,he _ that the water was to _.He found all the deaths were _ to the polluted water,so he was able to _ with certainty that polluted water carried the disease.To _ this from happening again,John Snow suggested that the source of all water supplies be _.Finally,“King Cholera”was _.exposedcurecontrolledconcludedblamelinkedannouncepreventexamineddefeated