1、Unit 1Unit 1Great Great scientistsscientistsLets have a competition!Do you know any scientists?The following is a quiz and lets find out who knows the most.Warming up 1.Which scientist discovered that objects in water are lifted up by a force that helps them float?B.ArchimedesC.Thomas EdisonA.Charle
2、s DarwinWarming up 2.Who wrote a book explaining how animals and plants developed as the environment changed?A.Marie CurieC.Charles DarwinB.Gregor Mendel3.Who invented the first steam engine?A.Thomas NewcomenC.Thomas EdisonB.Archimedes4.Who used peas to show how physical characteristics are passed f
3、rom parents to their children.A.Thomas EdisonC.ArchimedesB.Gregor Mendel5.Who discovered radium?A.Marie CurieC.NewtonB.Zhang Heng6.Who invented the way of giving electricity to everybody in large cities?A.Stephen Hawking C.Thomas EdisonB.Archimedes7.Who was the painter that studied dead bodies to im
4、prove his painting of people?A.Gregor MendelC.Marie CurieB.Leonardo da Vinci 8.Who invented a lamp to keep miners safe underground?A.Sir Humphry Davy C.FaradayB.Thomas Newcomen9.Who invented the earliest instrument to tell people where earthquakes happened?A.Charles DarwinC.Watt B.Zhang Heng10.Who p
5、ut forward a theory about black holes?A.Stephen HawkingC.CopernicusB.ArchimedesWhat makes ascientist successful?similaritiescareful hard-workingstrictpositivetalentedcreativebrightstrong-willedWhat impress you most in 2003?infectiousWhat impress you most in 2003?What other infectious diseases do you
6、 know?For example:When you eat some seafoodYou feelMaybe you have got _.Cholerainfectious diseases:They can be spread to other people.They have an unknown cause.They are difficult to cure.They need public health care to solve them.Cholera:It begins in the stomach and a severe case can lead to death
7、without immediate treatment.And the victims died very quickly from a loss of liquid after severe vomiting(呕吐呕吐)and diarrhoea(腹泻腹泻).Skimming:Who was the great scientist in the passage and what was the deadly disease of its day?John Snow choleraRead and answer:Paragraph 1:1 Why couldnt the cholera be
8、under control at first?Neither its cause,not its cure was understood.o True or false:1.John Snow was glad to help ordinary people.2.John Snow thought cholera would never be controlled.TFParagraph 2o Whats the two theories?o Which one is more reasonable?John Snow finally proved the theory he believed
9、 by _.A.gathering information with the help of a map B.looking into the source of the water for Broad Street and Cambridge Street C.separating those who suffered cholera from those who didnt D.both A and B E.both A and CParagraph 3&4 What valuable clue did he get about the cause of the disease?Many
10、of the deathshad no deaths.Paragraph 4A 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 houseParagraph 4oWhat might be the cause?It seemed that the water was to blame for cholera.Paragraph 5o When the
11、cause was found,what did John Snow tell the people do？To remove the handle from the water pump so it could not be used.Careful Reading:1.Where did the woman live and why did she and her daughter die?2.What did their deaths suggest?3.What measures did John Snow take to prevent the disease from spread
12、ing?Away from Broad StreetThey had drunk the water from the pump.The polluted water carried the virus.suggested thatbe examinedwere instructed not to exposetoJohn 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 wate
13、r 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 water pump.He had the handle removed from the water pump.Read the passage and number these events in the order that they happened.2147385
14、6draw a conclusion Think of a method Collect results Make a questionFind a problem Analyse the results Find supporting evidenceStages in setting out a new scientific idea:Discussing1.Read the text and learn the new words by heart.2.Find more information about cholera and John Snow on the Internet.Homework:
