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1、Unit 1 Great scientists Zhang Heng seismograph He is the father of super hybrid rice and one of Chinas most famous scientists. Yuan Longping Alexander Bell electricity Thomas Edison the first telephoneWright Brothers the electric lampMadame Curie black holes in universeFranklin Theory of GravityStev

2、en Hawking the first planeElbert Einstein radiumIsaac Newton Theory of RelativityScientists & Contributions: common characteristicsresponsible curiouscautiouspositivehardworkingcreativeimaginativeenthusiasticWhat good qualities do they have?. Dr. John Snow史 諾 醫(yī) 生John Snow was a well-known doctor in

3、the 19th century in London and he defeated “King Cholera”. What is cholera? contribute to = lead to = cause Match them:Para 1Para 2Para 3Para 4Para 5Para 6Para 7 7 stepsDraw a conclusion Think of a method Collect results Make a questionFind a problem Analyse the results Find supporting evidence Step

4、s What / How?1. Find a problem2. Make a question3. Think of a method4. Collect results What contributes to cholera?Theory 1: _ Theory 2:_ Which theory is correct ? He began to _ to prove _ theory was correct._information on a _ to find out the places_gather informationthe secondHe marked mapwhere th

5、e dead people had lived. Broad StreetMany deaths happened here.No death happened here. Public houseThese families had not drunk the water from the Broad Street pump.It seemed that the water from the pump was to blame. ？ Broad StreetMany deaths happened here.No death happened here. Public houseThese

6、families had not drunk the water from the Broad Street pump.It seemed that the water from the pump was to blame. ？ water pump Now it is still in the Broad Street in London, but it does not spread the cholera germs. 6. Find supporting evidence7. Draw a conclusion5. Analyse results He looked into _ to

7、 see if that was the cause of the illness.He found _, both of whom died of cholera after _. Polluted water carried the germs and the source of all drinking water supplies should be examined.the source of the watersupporting evidence fromdrinking the watertwo other deaths Draw a conclusionFind a prob

8、lemMake a questionThink of a methodCollect resultsAnalyse the resultsPara 1Para 2Para 3Para 4Para 5Para 6 Find supporting evidencePara 7Review 7 steps that John Snow took What disease do you think is similar to cholera today? Why? SARS, AIDS, bird flu and H7N9 They are severe. They can be spread to

9、other people. They have unknown cause. They are difficult to cure. They need public health care to solve them.infectious diseasesTo deal with these diseases, what should we learn from John Snow? Steps What / How?1. Find a problem2. Make a question3. Think of a method4. Collect results What contribut

10、es to cholera?Theory 1: _ Theory 2:_ Which theory is correct ? He began to _ to prove _ theory was correct._information on a _ to find out the places_gather informationthe secondHe marked mapwhere the dead people had lived. Broad StreetMany deaths happened here.No death happened here. Public houseTh

11、ese families had not drunk the water from the Broad Street pump.It seemed that the water from the pump was to blame. ？ water pump Now it is still in the Broad Street in London, but it does not spread the cholera germs. 6. Find supporting evidence7. Draw a conclusion5. Analyse results He looked into

12、_ to see if that was the cause of the illness.He found _, both of whom died of cholera after _. Polluted water carried the germs and the source of all drinking water supplies should be examined.the source of the watersupporting evidence fromdrinking the watertwo other deaths Draw a conclusionFind a

13、problemMake a questionThink of a methodCollect resultsAnalyse the resultsPara 1Para 2Para 3Para 4Para 5Para 6 Find supporting evidencePara 7Review 7 steps that John Snow took What disease do you think is similar to cholera today? Why? SARS, AIDS, bird flu and H7N9 They are severe. They can be spread

14、 to other people. They have unknown cause. They are difficult to cure. They need public health care to solve them.infectious diseasesTo deal with these diseases, what should we learn from John Snow? He made great contributions to defeating the SARS. Zhong Nanshan Draw a conclusionFind a problemMake

15、a questionThink of a methodCollect resultsAnalyse the resultsFind supporting evidencescientific research: Early in 2003 people were exposed to a new illness which was severe. At first, this illness looked as if it were flu. The problem was that nobody knew its cause or cure. _ Authorities(權(quán)威機構(gòu)) said

16、 chlamydia(衣原體病菌) was the cause of SARS. But Zhong had his own opinion. He thought it might be one cause of death, but not the only cause of SARS. There must be something else causing the disease._ In order to find other causes, he began his enquiry. He gathered information about those people who we

17、re ill and died. _ Find a problemMake a questionThink of a method He worked very hard and refused to hide the facts. Patients always had a high temperature headaches and often developed a dry cough and pneumonia（肺炎）. When doctors and nurses touched the patients kissed or hugged them, came close to t

18、hem or touched items used by the patients, they were at risk._ It was easy to fall ill with it because it was spread through air, water and close contact with patients. _ Collect resultsAnalyse the results It was highly infectious so that dirty plates in restaurants, dirty toilets or food that was n

19、ot clean passed on the disease. When people were infected, they could spread the disease by coughing or sneezing(打噴嚏). _ Finding supporting evidence On the 12th April 2003, he was successful in finding the cause of SARS. It was certain that the air, water and close contact with patients were to blam

20、e. He said the best way to prevent the spread of SARS was to keep away from the places where there was an outbreak and avoid contacting with people who might be infected. People could also reduce the risk of infection by washing hands often with soap. Because of his good work, SARS did not return to China in 2004. _ Draw a conclusion Homework: 1. Read the text and learn the new words by heart. 2. Find the sentences where the past participle is used in the text.