unit1 great scientists warming up and reading

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名称 unit1 great scientists warming up and reading
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科目 英语
更新时间 2009-08-04 21:10:00

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课件27张PPT。Unit 1 Great Scientists1.Which scientist discovered that objects in water are lifted up by a force that helps them float?B.ArchimedesC. Thomas EdisonA. Charles Darwin“Give me a place to stand and
I will move the world.”2. Who wrote a book explaining how animals and plants developed as the environment changed?A. Marie CurieC.Charles DarwinB. Gregor Mendel
the survival of the fittest3.Who invented the first steam engine?A.Thomas NewcomenC.Thomas EdisonB.ArchimedesJames Watt improved it still further in the 1770s
turning it into the first modern steam engine used
on the railways.4.Who used peas to show how physical characteristics are passed from?A.Gregor MendelC. Charles DarwinB. Marie Curie5. 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 improve 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 put forward a theory about black holes?A. Stephen HawkingC. CopernicusB. ArchimedesWarming upWhat impress you most in 2003?Which person impress you most during the SARS?What other infectious diseases do you know?For example: When you eat some seafood……You feel……Maybe you have got ________.CholeraJohn Snow defeats “King cholera”ReadingLet’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage: John Snow Defeats “King Cholera”Who defeats “King Cholera“?
What happened in 1854?
How many people died in 10 days?
Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?
John SnowCholera outbreak hit London.500These families had not drunk the water from the Broad Street pump.Task 1:Skim and ScanPut the events in right order.__ 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 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.21473856John Snow finally proved the theory he believed 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 didn’t
D. both A and BWhat’s the main idea of the passage?
John Snow was a well-known doctor in London.
The cause of Cholera was polluted water.
It is about John Snow’s life and his discovery.
How did John Snow collect, analyze data and find the cause of the disease and solved it .Discussion: Discuss the following questions in groups of four.1.2.3.Cholera was a 19th century disease. What disease do you think is similar to cholera today?John Snow believed Idea 2 was right. How did he finally prove it?Do you think John Snow would have solved this problem with- out the map? Give a reason.Discussion (4m) Two diseases, which are similar today, are SARS and AIDS because they are both very serious, have an unknown cause and public health care to solve them. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.Keys1.2. No. The map helped John Snow organise his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3.Water companyThe Source of the Polluted WaterUpper reaches of riverLower reachesWater pumpLet’s have a competition!ExtensionSpeaking activityDiscuss in groups of four, which field do you want to contribute yourself to in the future? One takes down the groupmates’ opinions, after that ,report the groupmates’ opinions to the whole class.