Unit 1 Reading and thinking (ppt课件)-2022新人教版(2019)《高中英语》选择性必修第二册.pptx
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1、空白演示Reading and ThinkingTo raise new questions,new possibilities,to regard old problems from a new angle,requires creative imagination and marks real advance in science.-Albert Einstein&Leopold Infeld 提出新的问题,发现新的可能,从新的角度审视已存在的问提出新的问题,发现新的可能,从新的角度审视已存在的问题,这些需要创造性的想象力,并标志着科学的真正进步。题,这些需要创造性的想象力,并标志着科学的
2、真正进步。-阿尔伯特阿尔伯特爱因斯坦爱因斯坦,利奥波德利奥波德英费尔德英费尔德Reading and Thinkingon Page 2John Snow Defeats“King Cholera”1.Discuss the following stages of scientific research in groups.What order would you put them in?_ analyse the results_ ask a question_ draw a conclusion_ collect data_ find a problem_ find supporting
3、evidence_ think of a methodJohn Snow Defeated“King Cholera”What is Cholera?Who is John Snow?How did he defeat Colera?What will be talked about from the title?John Snow(1813-1858)John Snow was born in York on March 15th,1813,the oldest of nine children.约翰约翰斯诺(斯诺(1813-1858),1813-1858),英国医生,英国医生,1919世纪
4、世纪5050年代因其对年代因其对霍乱病源的研究和贡献享誉世界医学界,被公认为流行病学奠霍乱病源的研究和贡献享誉世界医学界,被公认为流行病学奠基人之一。斯诺基人之一。斯诺18361836年起接受正规医科教育,年起接受正规医科教育,18441844年毕业于伦年毕业于伦敦大学。敦大学。18541854年伦敦霍乱流行,斯诺通过研究霍乱病死者的日年伦敦霍乱流行,斯诺通过研究霍乱病死者的日常生活情况,发现了霍乱与饮用不洁水的关系。在他的呼吁下,常生活情况,发现了霍乱与饮用不洁水的关系。在他的呼吁下,政府及时关闭了不洁水源,有效制止了霍乱的流行。虽然斯诺政府及时关闭了不洁水源,有效制止了霍乱的流行。虽然斯诺
5、没有发现导致霍乱的病原体,但他创造性地使用空间统计学查没有发现导致霍乱的病原体,但他创造性地使用空间统计学查找到传染源,并以此证明了这种方法的价值。今天,绘制地图找到传染源,并以此证明了这种方法的价值。今天,绘制地图已成为医学地理学及传染病学中一种基本的研究方法。已成为医学地理学及传染病学中一种基本的研究方法。“斯诺斯诺的霍乱地图的霍乱地图”成了一个经典案例。成了一个经典案例。The text is mainly about _ and _ he defeated king cholera.howJohn SnowLook at the picture,the title and the ma
6、p,guess what the content of the text is.Then skim it quickly to see if you are right.Fast-readingRead Para 1 and circle the key words to put the stages in order.JOHN SNOW DEFEATS“KING CHOLERA”Cholera used to be one of the most feared diseases in the world,until a British doctor,John Snow,showed how
7、it could be overcome.This illness causes severe diarrhoea,dehydration,and even death.In the early 19th century,when an outbreak of cholera hit Europe,millions of people died from the disease.As a young doctor,John Snow became frustrated because no one knew how to prevent or treat cholera.In time,he
8、rose to become a famous doctor,and even attended to Queen Victoria when she gave birth.However,he never lost his desire to destroy cholera once and for all.Find a problem.Read Para 2 and circle the key words to put the stages in order.In general,doctors in those days had two contradictory theories t
9、o explain how cholera spread.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.It was correct,but he still needed proof.Consequently,when an outbreak of cholera hit London in 1854,Snow b
10、egan to investigate.He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days.He was determined to find out why.Ask a question.Read Para 3 and circle the key words to put the stages in order.Snow began by marking on a map the exact pla
11、ces where all those who died had lived.There were multiple deaths near the water pump in Broad Street(especially house numbers 16,37,38,and 40).However,some households(such as 20 and 21 Broad Street,and 8 and 9 Cambridge Street)had had no deaths.These people worked in the pub at 7 Cambridge Street.T
12、hey had been given free beer,and so had not drunk the water from the pump.Snow suspected that the water pump was to blame.What is more,in another part of London,a woman and her daughter had died of cholera after moving away from Broad Street.It seemed that the woman liked the water from the pump so
13、much that she had it delivered to her house every day.As a result of this evidence,John Snow was able to announce that the pump water carried cholera germs.Accordingly,he had the handle of the pump removed so that it could not be used.Through this intervention,the disease was stopped in its tracks.T
14、hink of a method.Collect data.Analyze the results.multiple deaths happened here.No death happened here.The water from the pump was to blame.Public houseClue:free beer from public houseResult:The water came from the river which had been polluted by the dirty water from London.adj.数量多的The truth was th
15、at the water from the Broad Street pump had been infected by waste.Moreover,Snow was later able to show a link between other cases of cholera and the different water companies in London.Some companies sold water from the River Thames that was polluted by raw waste.The people who drank this water wer
16、e much more likely to get cholera than those who drank pure or boiled water.Read Para 4 and circle the key words to put the stages in order.Find supporting evidence.Through Snows tireless efforts,water companies began to sell clean water and the threat of cholera around the world saw a substantial d
17、ecrease.However,cholera is still a problem.Each year,millions of people around the world get cholera and many die from it.Fortunately,we now know how to prevent cholera,thanks to the work of John Snow.Moreover,in his use of maps and statistics,Snow transformed the way scientists study diseases.For t
18、his reason,Snow is considered the father of modern epidemiology.Read Para 5 and circle the key words to put the stages in order.Draw a conclusion.Use the stages in examining a new scientific idea to describe each paragraph.draw a conclusionfind a problemask a questioncollect datafind supporting evid
19、enceWhat causes cholera?Which theory is correct?Mark information on a map to find out where people died or did not die.Find other evidence to confirm the conclusion.The water is to blame.The source of all drinking water should be examined so that it is safe.2.Skim the passage to see if the order you
20、 decided in Activity 1 was correct._ analyse the results_ ask a question_ draw a conclusion_ collect data_ find a problem_ find supporting evidence_ think of a method12345673.Read the passage again and complete the chart below.It was believed that cholera was caused by bad _ or germs in _.Snow _ the
21、 places where the people who _ had lived.Many deaths occurred near the _ in Broad Street.Some people _ drunk the water from the pump,and lived.A woman and her daughter died in another part of London after _.The pump water carried _.The _ of the pump was removed.airfood or watermarked on a mapdiedwat
22、er pumphadntcholera germshandleA.C.B.D.E.moving away from Broad Street,but drinking water from the pump.JOHN SNOW DEFEATS“KING CHOLERA”约输约输斯诺战胜斯诺战胜“霍乱王霍乱王”Cholera used to be one of the most feared diseases in the world,until a British doctor,John Snow,showed how it could be overcome.This illness cau
23、ses severe diarrhoea,dehydration,and even death.In the early 19th century,when an outbreak of cholera hit Europe,millions of people died from the disease.在英国医生约翰在英国医生约翰斯诺向人们展示如何战胜霍乱斯诺向人们展示如何战胜霍乱之前,霍乱曾是世界上最令人恐惧的疾病之一。它可导致严重腹之前,霍乱曾是世界上最令人恐惧的疾病之一。它可导致严重腹泻、脱水甚至死亡。泻、脱水甚至死亡。十九世纪初十九世纪初,霍霍乱乱暴发暴发,肆虐欧洲,肆虐欧洲,数百
24、万数百万人人丧命丧命。As a young doctor,John Snow became frustrated because no one knew how to prevent or treat cholera.In time,he rose to become a famous doctor,and even attended to Queen Victoria when she gave birth.However,he never lost his desire to destroy cholera once and for all.由于当时无人知道如何预防或治疗霍由于当时无人知道
25、如何预防或治疗霍乱,年轻的约翰乱,年轻的约翰斯诺医生斯诺医生很沮丧很沮丧。后来后来,他,他成了成了一位名医。一位名医。甚至甚至照料照料分娩分娩的维多利亚女王。然而,他的维多利亚女王。然而,他始终始终没有放弃彻底根没有放弃彻底根除霍乱的愿望。除霍乱的愿望。In time,he rose to become a famous doctor,and even attended to Queen Victoria when she gave birth.后来后来,他成为,他成为一名著名的医生,甚至在维多利亚女王分娩时照顾她。一名著名的医生,甚至在维多利亚女王分娩时照顾她。1in time及时;终于;及
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