人教版高中英语必修五Unit 1 Great scientist Warming-up and pre-reading课件（41张PPT)

课件41张PPT。Great scientists
Warming-up and pre-readingUnit 1Do you know their names? hard-workingWhat qualities do you think they have
in common?modestimaginative determined devotedwisecarefulcreative1. Which scientist
discovered that objects
in water are lifted up by
a force that helps them float?ArchimedesIt’s…An ancient Greek mathematician.
If you put an object into water,
the water pushes the object up.2. Who wrote a book explaining
how animals and plants developed
as the environment changed?Charles Darwin3. Who invented the first steam engine?steam engineJames Watt4. Who used peas
to show how physical
characters are
passed from parents
to their children?Gregor MendelIt’s used in the treatment of some diseases,
especially cancer.radiumWhat’s this?5. Who discovered radium?Marie Curie1898
Won two Nobel Prizes, one for
physics and one for chemistry.6. Who invented the way of
giving electricity to everybody
in large cities?Thomas Edison7. Who was the painter that studied
dead bodies to improve his painting
of people?Leonardo da Vinci8. Who invented a lamp to
keep miners safe underground?Sir Humphry Davy9. Who invented the earliest instrument to
tell people where earthquakes happened?Zhang Hengseismograph10. Who put forward a theory
about black holes? Pre-ReadingDo you know how to prove a new
idea in scientific research?
DiscussionThink of a methodAnalyse the resultsMake a questionFind a problemCollect resultsFind supporting evidenceDraw a conclusionHow much do you know about
infectious diseases? What do you know about cholera? Cholera?is a serious disease that often kills people. It is caused by drinking infected water or by eating infected food. 霍乱John Snow
(1813~1858)
a legendary figure in
the history of public health, epidemiology
(流行病学） and
anesthesiology
(麻醉学) ReadingDo you know what this map was used for in 1854?1. Who defeats “King Cholera“?
2. What happened in 1854?
3. How many people died in 10 days?
4. Why is there no death at No. 20 and 21
Broad Street as well as at No. 8 and 9
Cambridge Street?Task 1:Skim and Scan1. Who defeats “King Cholera“?
2. What happened in 1854?
3. How many people died in 10 days?John SnowCholera outbreak hit London.5004. Why is there no death at No. 20 and 21
Broad Street as well as at No. 8 and 9
Cambridge Street?These families had not
drunk the water from
the Broad Street pump.A map of Broad StreetWhat method did he use?Broad StreetMany deaths happened here.No death happened here.The water from the pump was to blame.PubTask 2Read and answer1. Which theory did John Snow believe in?Idea 2: People absorbed cholera into their bodies with their meals. 2. John Snow finally proved the theory
he believed by ________.
A. gathering information with the help
of a map
B. looking into the source of the water for
Broad Street and Cambridge Street
C. separating those who suffered cholera
from those who didn’t
D. both A and BD3. To prevent the cholera from spreading
again, what did John Snow do?Suggested that the source of all water
supplies be examined.
Instructed the water companies not to
expose people to the polluted water
anymore.4. what’s the purpose of the text?
To show us how difficult it was to find a cure for Cholera.
To tell us how Snow found the cause of Cholera and the cure for it.
to show us how difficult it was to carry out experiments at that time.
To tell us the way Cholera spread and how serious it was. B Post-reading What should you do if you're travelling to a country with a cholera outbreak? Drink only water that you have boiled
or treated with chlorine or iodine. Other
safe drinks include tea or coffee made
with boiled water and carbonated, bottled
beverages with no ice.Eat only food that's been thoroughly cooked and is still hot, or fruit that you've peeled yourself.
Avoid undercooked or raw fish and shellfish.
Avoid raw salads and vegetables.
Avoid food and drinks from street vendors.
"Boil it, cook it, peel it, or forget it."TIPS