阅读课Unit1Greatscientist.ppt

1、Who is he?He is Archimedes(阿基米德阿基米德)Which scientist discovered that objects in water are lifted up by a force that helps them float?Charles Darwin.Who is he?He is Who wrote a book explaining how animals and plants developed as the environment changed?Thomas Newcomen.Who is he?He is Who invented the

2、first steam engine?Gregor MendelWho is he?He is Who used peas to show how physical characteristics are passed from parents to their children?Marie CurieWho is he?She is Who discovered radium?Thomas EdisonWho is he?He is Who invented the way of giving electricity to everybody in large cities?Leonardo

3、 da VinciWho is he?He is Who was the painter that studied dead bodies to improve his painting of people?Humphry DavyWho is he?Who is he?He is Who invented a lamp to keep miners safe underground?Stephen HawkingWho is he?He is Who put forward a theory about black holes?put forward 提出提出e.g.He put forwa

4、rd a valuable suggestion at the meeting.Josh put forward a plan for an outing this weekend.【拓展拓展】我们在以前还学过表示我们在以前还学过表示“提出提出”的短语，的短语，它们是它们是 _ 和和come up with。bring up 常见的常见的put短语还有：短语还有：put away 收起来；存蓄收起来；存蓄put off 推迟，延期推迟，延期put on 穿上，戴上；上演穿上，戴上；上演put out 使熄灭；生产；出版使熄灭；生产；出版put through 接通电话；使经历；使通过接通电话；

5、使经历；使通过put up 举起；修建；张贴举起；修建；张贴 【】选用以上短语的适当形式填空。选用以上短语的适当形式填空。1.The suggestion _ by Mr.Wang at yesterdays meeting was a wonderful one.2.They decided to _ the picnic because of the rain.put forward put off1.Do you know how to prove a new idea in scientific research?What order would you put them in?7Dr

6、aw a conclusion 3Think of a method4 Collect results2 Make a question1 Find a problem5 Analyse the results6 Find supporting evidencePlease put the 7 stages in right order according to the passage.What do you know about infectious diseases?What do you know about cholera?GermanyGreat BritainDeath of fi

7、rst cholera case in London during the 1848-49 epidemic LondonPrevious cholera epidemic in Great Britain in 1831-32The spread The spread of choleraof choleraJohn SnowRead the text(P2-3)quickly and complete the main idea of it.The text is mainly about _ and how he _.Johndefeated choleraSnowI.To prove

8、a new scientific idea,seven stages are needed.Read the text(P2-3)carefully and fill in the blanks.Stage 1 Find a problemA large number of people died of cholera,but neither its 1._ nor its 2._ was understood.Stage 2 Make a question Theory one:Cholera 3._ in the air and floated around until it found

9、its victims.Theory two:When people 4._ cholera into their bodies with meals,their bodies were attacked.cause absorbed multipliedcureStage 3 Think of a methodBegan to gather information to 5._ that the second theory was correct.Stage 4 Collect resultsMarked where the dead people had lived on a(n)6._.

10、Stage 5 Analyse the resultsLooked into the 7._ of the water to see if the problem was the water.map provesourceBroad StreetMany deaths happened here.No death happened here.The water from the pump was to blame.Public houseSmall,white,flocculent particlesThe water was from the river which had been pol

11、luted by the dirty water from London.Stage 6Find supporting evidenceFound supporting evidence from two other deaths:Both of them died of cholera after 8._.Stage 7Draw a conclusion 9._ carried the virus.All the water supplies should be 10._.drinking the water Polluted waterexaminedextra evidence:A wo

12、man and her daughter who lived far away but drank the water also died.I.Choose the best answer.1.We know from the text that John Snow _.A.had collected information before cholera broke out B.felt not quite sure after he finished the mapC.helped the woman from Broad StreetD.became famous after defeat

13、ing cholera2.Why did John Snow use a map in his research?A.It could help him find exactly how many people died of cholera.B.It could help him find the source of drinking water for people.C.It could help him organize his ideas and find evidence.D.It could help him find his way in Broad Street.3.Why w

14、as cholera called“King Cholera”in the text?A.Because it caused many deaths.B.Because it got its name from Queen Victoria.C.Because it was defeated with the help of the King.D.Because it was the most deadly disease of its day.I.Number these events in the order that they happened._ John Snow began to

15、test two theories._ An outbreak of cholera hit London in 1854._ John Snow marked the deaths on a map.124_ He announced that the water carried the disease._ John Snow investigated two streets where the outbreak was very severe._ King Cholera was defeated._ He found that most of the deaths were near a

16、 water pump._ He had the handle removed from the water pump.35678 Answer these questions.1.John Snow believed Idea 2 was right.How did he finally prove it?John Snow finally proved his idea because he found an outbreak that was clearly related to cholera,collected information and was able to tie case

17、s outside the area to the polluted water.2.Do you think John Snow would have solved this problem without the map?Give a reason.No.The map helped John Snow organize his ideas.He was able to identify those households that had had many deaths and check their water-drinking habits.Heidentified those hou

18、ses that had had no deaths and surveyed their drinking habits.The evidence clearly pointed to the polluted water being the cause.3.Cholera was a 19th century disease.What disease do you think is similar to cholera today?Why?Three diseases,which are similar today,are SARS,AIDS and bird flu,because th

19、ey are serious,have an unknown cause and need public health care to solve them.Drink only water that you have boiled or treated with chlorine or iodine.Other safe drinks include tea or coffee made with boiled water and carbonated,bottled beverages with no ice.What should you do if youre travelling to a country that has a cholera outbreak?Eat only food thats been thoroughly cooked and is still hot,or fruit that youve peeled yourself.Avoid undercooked or raw fish and shellfish.Avoid raw salads and vegetables.Avoid food and drinks from street vendors.Boil it,cook it,peel it,or forget it.