人教版英语必修5 Unit 1 Great Scientists Reading 课件（共17张PPT）

课件17张PPT。Unit 1 Great ScientistsHow can you make 1000 out of eight 8s? Brain TeaserWill you become great scientists ? How can you make 6 out of three 7s?1.2.3.4.5.6.7.draw a conclusion;
think of a method;
collect results;
make a question;
find a problem;
analyse the results;
find supporting evidenceTo prove a new idea in scientific researchRepeat if necessaryStages in an experimentJohn Snow defeats “King Cholera”— an example of scientific researchFind a problem;
Make a question;
Think of a method;
Collect results;
Analyse the results;
Find supporting evidence;
Draw a conclusion. 1.2.3.4.5.6.7.John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.John Snow defeats “King Cholera”John Snow (1813-1858)
a doctor in Great Britain. He a_______ Queen Victoria as her personal p________.ttendedhysician“King Cholera” is an i and d disease. nfectiouseadlyJohn Snow defeats “King Cholera”Find a problem; 1.What caused cholera?
Four o________ of cholera in the 1830s and 1840s killed many people in England. In 1854, the most s_____ cholera occurred. It s______ quickly through poor n_____________. Thousands of terrified people who were e_______ to the disease died. evere utbreaks xposedpreadeighbourhoodsThe Severe situationPara.1John Snow defeats “King Cholera”Make a question; 2.Which theory was correct?Two theories1. Cholera multiplied in a cloud of gas;
2. Cholera was absorbed into human bodies with their meals.Para. 2John Snow defeats “King Cholera”Think of a method;
Collect results;
3.4.Make his e_______ in poor n___________ where the o_______ was very s_______. M_____ information on a m_____ to find out where people did or did not die. By doing that, Snow found that . the water was to blamePara. 3Para. 4nquiryeighborhoods utbreakeverearkapJohn Snow defeats “King Cholera”Analyse the results;
5.Analyse the s of water;
R______ the h from the pump so that the p water couldn’t be used.ourceandleollutedPara. 5emove…two other d_______that were l______ the Broad Street outbreak…John Snow defeats “King Cholera”Find supporting evidence;
Draw a conclusion. 6.7.It is the p______ water that c the virus and all the water supplies should be e . arriedxaminedPara. 6Para. 7eaths inked toollutedFind a problem;
Make a question;
Think of a method;
Collect results;
Analyse the results;
Find supporting evidence;
Draw a conclusion. 1.2.3.4.5.6.7.Elephants fight cancerFind a problemElephants may hold the key to fighting cancer.Make a questionWhy elephants do not develop cancer?Think of a methodDo research on it
a team at the University of Chicago, US
Oxford University scientist Richard Peto
…Collect resultsElephants carry a large number genes that stop tumors from developing.
…the risk of cancer does not show a connection with body mass. (Peto’s paradox)…
…Analyse the resultsThe extra copies of the gene improved the animal’s sensitivity to DNA damage.
In the elephant’s case, the making of TP53 is nature’s way of keeping this species alive.
Researchers could use the discovery to develop new treatments…When the same genes were brought to life in mice, they had the same cancer resistance as elephants.Find supporting evidenceDraw a conclusionIt’s up to us to learn how different animals tackle the problem so we can use the strategies to prevent cancer in people.