高中英语-人教版选择性必修二-Unit1-Reading-and-Thinking优质PPT.pptx

1、,6,Who discovered that objects in water are lifted up by a force that helps them float?,Archimedes（287-212 BCE）,an ancient Greek mathematician&physicist,7,Archimedes principle阿基米德定律（浮力）,Give me a place to stand,and I shall move the world.,If you put an object into water,the water pushes the object u

2、p.It rises and partly floats.The force of the water pushing it up is the same as the weight of the object.,8,Who wrote a book explaining how animals and plants developed as the environment changed?,The Origin of Species,Charles Darwin（1808-1882）British author,It explains how plants and animals chang

3、ed over time to fit in with a changing environment.,9,Who discovered radium?,She was the first woman to win the Nobel Prize,the first person and only woman to win twice.,Marie Curie（1867-1934）Polish and French,10,Who was the painter that studied dead bodies to improve his painting of people?,Leonard

4、o da Vinci（1452-1519）,Italian artist,masterpieces,11,Who invented the earliest instrument to tell people where earthquakes happened?,invented the first seismograph（地动仪）,Zhang Heng（78-139）,Chinese,12,Who put forward a theory about black holes?,worked on astronomy and studied black holes in space,Step

5、hen Hawking（1942-2018）British scientist,He has shown that black holes do not only absorb everything around them but,from time to time,throw out matter as well.,13,Who discovered artemisinin（青蒿素）?,Tu Youyou,She is the first Chinese Nobel laureate in physiology or medicine and the first female citizen

6、 of China to receive a Nobel Prize in any category,as well as the first Chinese person to receive the Lasker Award.,（拉斯克医学奖极具声望的生物医学奖项）,14,_ analyze the results _ ask a question_ draw a conclusion _ collect data _ find a problem _ find supporting evidence_ think of a method,Discuss the following sta

7、ges of scientific research in groups.What order would you put them in?,5,Understand the questioning mind,2,7,4,1,6,3,15,n.腹泻,What do you know about infectious diseases?What do you know about cholera?,Cholera is the illness caused by a bacterium（细菌）called Vibrio cholerae.It infects peoples intestines

8、（肠）,causing diarrhea,vomiting（呕吐）and leg cramps（腿抽筋）.People even die quickly from a loss of liquid.,n.霍乱,vt.使感染;传染,16,Seven cholera pandemics（霍乱大流行）have occurred in the past 200 years.Lets take the third cholera pandemic（18521860）as an example to see its“power”.,Because of some scientists great effo

9、rts,now the cholera is not as serious as that time.,17,Read the passage quickly and choose the main idea.,John Snow was a well-known doctor in London.The cause of Cholera was polluted water.The source of all drinking water should be examined.How John Snow collected,analyzed data and found the cause

10、of the disease and solved it.,18,Use the stages in examining a new scientific idea to describe each paragraph.,draw a conclusion,find a problem,ask a question,collect data,find supporting evidence,What causes cholera?,Which theory is correct?,Mark information on a map to find out where people died o

11、r did not die.,Find other evidence to confirm the conclusion.,The water is to blame.The source of all drinking water should be examined so that it is safe.,v.指责,19,Read the passage again and complete the chart below.,It was believed that cholera was caused by bad _ or germs in _.,Snow _ the places w

12、here the people who _ had lived.,Many deaths occurred near the _ in Broad Street.,Some people _ drunk the water from the pump,and lived.,A woman and her daughter died in another part of London after _.,The pump water carried _.,The _ of the pump was removed.,air,food or water,marked,died,water pump,

13、hadnt,moving,cholera germs,handle,A.,C.,B.,D.,E.,away from Broad Street,n.细菌,n.把手,泵,20,multiple deaths happened here.,No death happened here.,The water from the pump was to blame.,Public house,Clue:free beer from public house,Result:The water came from the river which had been polluted by the dirty

14、water from London.,adj.数量多的,21,Match the following headers with the letters from the chart above.Write A-E in the blanks.,1.conclusion _ 2.evidence _ 3.process _ 4.solution _ 5.theories _,D,C,B,E,A,22,What questions would you ask to get the following answers?,1.Q:What _?A:Snow thought that cholera was caused by germ