课件29张PPT。Period 1 Warming up & Reading Unit 1 Great ScientistsWarming upIs it important in our life?
Who invented it?light bulbGuessing Our school will hold an exhibition of some famous scientists around the world. Whom do you think we will choose?
Listen to my description and guess.ArchimedesHe lived in Ancient GreeceHe discovered that objects in water are lifted up by a force.The force helps them float.This theory helped him solve the problem raised by the king.He once said, “give me a place to stand on, and I can move the earth.”Charles DarwinHe was born in 1808, in Britain.He wrote a famous book which changed the way we think about our lives.At that time people thought all living things were perfect, so would never need to change.He put forward his theory that animals and plants developed as the environment changed.3. Who invented the first steam engine?
Thomas Newcomen
(1663-1729) British4. Who used peas to show how physical
characteristics are passed from parents to
their children.Gregor Mendel, Czech, a botanist and geneticist.
5. Who discovered radium?
Marie Curie (1867-1934)
Polish and French, won two Nobel Prizes
6. Who invented the way of giving electricity to everybody in large cities?
Thomas Edison (1847-1931) an American inventor7. Who was the painter that studied dead bodies to improve his painting of people?
Leonardo da Vinci
(1452-1519) Italian artist8. Who invented a lamp to keep miner safe underground?Sir Humphrey Davy (1778-1829) British9. Who invented the earliest instrument to tell people where earthquakes happened?Zhang Heng (78-139) Chinese, invented seismograph10. Who put forward a theory about black holes?Stephen Hawking (1942--) British, a physicistDo you know him?Zhong Nanshan (钟南山)SARSinfectious diseasecholera John Snow (1813—1858) was born and worked as a doctor in Great Britain. He was originally an anesthetist (麻醉师) and (what we? would call now) the first epidemiologist(流行病学家). At the time he lived, cholera was the most frightening disease. There were four outbreaks of cholera in 1830s and 1840s, which killed many thousands of people in the industrial cities of England. Broad Street in 1854Background information1. Skimming:Do you know what was this map used for in 1854?Finding out the cause of cholera.ReadingWhat happened in 1854?
How many people died in 10 days?
Why is there no death at No. 20 and 21
Broad Street as well as at No. 8 and 9
Cambridge Street?2. Scanning:A cholera outbreak hit London.500These families had not drunk the water from the Broad Street pump.Mind Map of the TextJohn Snow Defeats “King Cholera”Paragraph 1: Find a Problem: What cause the cholera?Paragraph 2: Raise his question: Which of the two theories is right? Paragraph 3-6: Procedure of the study of the breakout in 1854 and the result Paragraph 7: Prevention of cholera
John Snow defeat King Cholera3. Further reading:Nobody knew the cause of the serious disease of choleraa strange cloud of gas found its victimspeople absorbed the disease with mealsCollect information from the cholera outbreak to prove which theory was correctHe found the cause of cholera was the polluted waterIdea 2. Because the information showed that the dirty water carried choleraHe defeated cholera by examining the water supply and dealing with the polluted water 1. Fill in the blanks according to the text.
John Snow was a __________ doctor in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ______ out, he began to gather information. He ______ on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the ______ died. So he decided that the polluted water carried cholera. He suggested that the ______ of all water supply ___________ and new methods of ________ with polluted water be found. Finally, “King Cholera” was _______.well-known19thcausedefeatbrokemarkedpumpsourcebe examineddealingdefeatedPost reading1).What should you do if you're traveling to a country that has a cholera outbreak according to Snow’s theory?
2.) What spirit can we find in John Snow? As a student, what should we learn from him?2.Work in groups of four. Discuss the following questions.Careful, kind, brave, responsible, devoted to his career What should you do if you're travelling to a country that has 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."TIPSWhat is Cholera? Cholera is the illness caused by a bacterium called Vibria cholerae. It infects people’s intestines(肠), causing diarrhea(腹泻), vomiting and leg cramps. The most common cause of cholera is by someone eating food or drinking water that has been contaminated with the
bacteria. After a disaster, this is a very real danger, since regular, clean water and food supplies are often unavailable. The disease can be spread even further by infected people using already dirty water sources to clean themselves or dispose of waste. Cholera can be mild or even without
symptoms, a severe case can lead to
death without immediate treatment. The
diarrhea and vomiting brought on by the
infection quickly leaves the body without
enough fluid. The following
dehydration(脱水) and shock can kill a
person within hours.