1、Unit 1 Great ScientistsArchimedesHe lived in Ancient GreeceHe discovered that objects in water are lifted up by a force.This theory helped him solve the problem raised by the king.He once said,“give me a place to stand on,and I can move the earth.”WarmingWarming upuplight bulbCharles DarwinHe was bo
2、rn in 1808,in Britain.He wrote a famous book which changed the way we think about our lives.At that time people thought all living things were perfect,so would never need to change.He put forward his theory that animals and plants developed as the environment changed.4.Who invented the first steam 4
3、.Who invented the first steam engine?engine?Thomas Newcomen(1663-1729)British5.Who discovered radium?5.Who discovered radium?Marie Curie(1867-1934)Polish and French,won two Nobel PrizesLeonardo da Vinci(1452-1519)Italian artistZhang Heng(78-139)Chinese,invented seismographStephen Hawking (1942-)Brit
4、ish,a physicistWhat do you think when you see these words?How about Cholera?Spread from one person to another.So it is an infectious Disease.infect/affect peoplebacteria of cholera It infects peoples intestines(肠道肠道),causing diarrhoea(腹泻腹泻),vomiting(呕吐呕吐)and dehydration(脱水脱水)Many deaths in African c
5、ountries in 2005and even nowWho can help us out of the trouble?Who can ease the pain?Scientists&doctorsJohn Snow (1813 1858)Englishman CholeraJohn Snow defeats“King cholera”Whats the main idea of the passage?A John Snow was a well-known doctor in London.B The cause of Cholera was polluted water.C Th
6、e source of all drinking water should be examined.D How did John Snow collect,analyze data and find the cause of the disease and solved it.Two theoriesIn 1854500,1016,37,38 and 4020,21;8,9 7The first ;the secondAnother outbreak hit London.More than 500people had died in 10 days.These numbers in Broa
7、d Street near the water pump had many of the deaths.20 and 21 Broad Street and 8 and 9 Cambridge Street had no deaths.They didnt drink the water from the Broad Street pump.These families worked in the pub at 7 Cambridge Street.Part 1Part 2Part 3part4(7)(2)(3-6)(1)Draw a conclusionThink of a method C
8、ollect results Make up a questionFind a problemAnalyse the resultsFind supporting evidenceScientific Report by John SnowNobody knew the cause of the serious disease of cholera.Idea 1,Idea 2,Collect information from the cholera outbreak to prove which theory was correct.He found the cause of cholera
9、was the polluted water.2.Because there was a connection between the drinking water and the deaths.John Snow was able to show tat cholera could be defeated now that its cause was known.The problemThe causeThe methodThe resultsIdea 1 or 2?Why?The conclusionJohn Snow was a _ doctor in London in the _ c
10、entury.He wanted to find the _ of cholera in order to _ it.In 1854 when a cholera _ out,he began to gather information.He _on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the _ died.So he decided that the polluted water carried cholera.He suggested that the _ of all water supply _ and new methods of _ with polluted water be found.Finally,“King Cholera”was _.well-known19thcausedefeatbrokemarkedpumpsourcebe examineddealingdefeatedPost reading
