1、Unit 1 Great Scientists1Warming up21.Who wrote a book explaining how animals and plants developed as the environment changed?A.Marie CurieC.Charles DarwinB.Gregor Mendel32.Who discovered radium?A.Marie CurieC.NewtonB.Zhang Heng43.Who invented the way of giving electricity to everybody in large citie
2、s?A.Stephen Hawking C.Thomas EdisonB.Archimedes54.Which scientist discovered that objects in water are lifted up by a force that helps them float?B.ArchimedesC.Thomas EdisonA.Charles Darwin65.Who invented the earliest instrument to tell people where earthquakes happened?A.Charles DarwinC.Watt B.Zhan
3、g Heng76.Who put forward a theory about black holes?A.Stephen HawkingC.CopernicusB.Archimedes89infectious 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.Pre-reading:10Cholera:It begins in the stomach and a
4、severe case can lead to death without immediate treatment.And the victims died very quickly from a loss of liquid after severe vomiting(呕吐呕吐)and diarrhea(腹泻腹泻).11Para 1Para 2Para 3Para 4Para 5Para 6Para 7Draw a conclusionThink of a methodCollect resultsMake a questionFind a problemAnalyse the result
5、sFind supporting evidenceMatch them12John Snow Defeats“King Cholera”Para.1:Find a problem Para.2:Make a question Whats the problem?What are the two theories?Neither its cause nor its cure was understood.What caused the cholera?1.Cholera multiplied in the air.2.People absorbed the disease with meals.
6、Careful reading13Para 3&4:Think of a method&Collect the results Para.5:Analyze the results What method did he use?Whats the result?He marked the death on a map where all the dead people had lived.It seemed that the water was to blame.What happened to the water and what did he ask people do?The water
7、 was polluted by the dirty water.He told people to remove the handle from the pump.Cholera was spread by germs and not in a cloud of gas.14Para.6:Find supporting evidence Para.7:Draw a conclusion Whats the extra evidence?Two other deaths.A woman and her daughter died of cholera after drinking the wa
8、ter.The polluted water caused cholera.What did he suggest people do to prevent the disease?Suggested the source of all water supplies be examined.Instructed the water companies not to expose people to the polluted water any more.Finally,“King cholera”was defeated.15doctorexposedtheoriessuspectedblam
9、eremovepumpslowedlinkedannounceannounceinstructeddefeatedSummary John Snow was a famous _ in London and he want to help the ordinary people_ to cholera.There were two _ about the cause of cholera.John Snow _that the second one was correct.He carried out a series of researches and found that the wate
10、r was to_.So he told the people to_ the handle from the_at once.The disease soon _ down.After that he found two other deaths that were _to the water.With this extra evidence John Snow was able to _with certainty that polluted water carried the virus.He suggested the water companies should be_not to
11、supply people with polluted water.Finally“King Cholera”was _.Read the passage again and fill in the blanks.16What infectious diseases do you know about?Discussion What should we pay attention to in our daily life in order not to get infected with the infectious disease?17 What should we pay attentio
12、n to in our daily life in order not to get infected with the infectious disease?18 Do exercise regularlyWash hands oftenKeep away from fliesKeep balanced dietKeep the kitchen cleanDrink boiled waterDiscussionOften open the window Dispose rubbish properlyCook raw food thoroughlychoose fresh sea foodHeat the food left overnightBe aware of what you eat19 Write a passage about how to prevent ourselves from getting infected with infectious diseases by yourselves.Homework2021
