Unit 1 Great Scientists,What do you know about great scientists? Try this quiz and rob answers(抢答).,Are you ready? Lets go!,Warming up,1. Who wrote a book explaining how animals and plants developed as the environment changed?,A. Marie Curie,C. Charles Darwin,B. Gregor Mendel,2. Who discovered radium?,A. Marie Curie,C. Newton,B. Zhang Heng,3. Who invented the way of giving electricity to everybody in large cities?,A. Stephen Hawking,C. Thomas Edison,B. Archimedes,4.Which scientist discovered that objects in water are lifted up by a force that helps them float?,B. Archimedes,C. Thomas Edison,A. Charles Darwin,5. Who invented the earliest instrument to tell people where earthquakes happened?,A. Charles Darwin,C. Watt,B. Zhang Heng,6.Who put forward a theory about black holes?,A. Stephen Hawking,C. Copernicus,B. Archimedes,Reading,John Snow Defeats “King Cholera”,Match them,John 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.,Careful reading,Para 3&4: Think of a method &Collect the results,Para. 5: Analyse 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 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.,Para. 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 water. 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.,doctor,exposed,theories,suspected,blame,remove,pump,slowed,linked,announce,instructed,defeated,Summary,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 water 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 supply people with polluted water. Finally “ King Cholera” was _.,Read the passage again and fill in the blanks.,What 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?,What should we pay attention to in our daily life in order not to get infected with the infectious disease?,In order not to get infected with the infectious disease in our daily life, we should do as follows. First, be aware of what we eat and drink. Always drink boiled water and keep a balanced diet to keep healthy. Second, keep our living environment clean and tidy. Often wash hands and open the window to circulate the air. Dispose rubbish properly to avoid flies and germs. Last but not least, do exercise regularly to strengthen our body. If we do like this, we can prevent ourselves from the infectious diseases.,Write a passage about how to prevent ourselves from getting infected with infectious diseases by yourselves.,Homework,Thank you!,Do exercise regularly,Wash hands often,Keep away from flies,Keep balanced diet,Keep the kitchen clean,Drink boiled water,Discussion,Often open the window,Dispose rubbish properly,Cook raw food thoroughly,choose fresh sea food,Heat the food left overnight,Be aware of what you eat,