Unit 1 Science and Scientists Reading and Thinking 课件-2024-2025学年高中英语人教版（2019）选择性必修第二册

ar D0ath ron Unit 1 So ENCE AND SCIENTISTS Dr.John Snow P1 Reading and Thinking —Understand the questioningmind http://www.xybs.com U N I T http:hww xyybs.com COVID-19:an infectious disease. It was discovered in the human body in 2019. The virus is generally characterised by fever, dry cough and gradually dyspnea(逐渐出现呼吸困难)。 The virus was confirmed to be with the phenomenon of human transmission and have latent(潜在的)infection. Thedisease had no specific treatment at that time,so it broke out in 2020 and swept the globe. We know something about COVID 19,but there is still much we don't know about i计.We still need time to figure them out. How many stages are needed to set out a scientific research? Do you know how to prove a new idea in scientific research? uu Possible analyse the results ansW In the early 19th century,a similar infectious disease hit Europe. Now,let's read a passage about it to see if the order you decided was correct. What order would you put them in? P21 Read the title and predict. John Snow Defeats“King Cholera” Who ? How ? What ? Main idea:The text is mainly about_John Snow and how he defeat King Cholera Read and finish the tasks as quickly as possible. http:hww xyybs.com While How did John Snow defeat King Cholera? What's the results and significance of John Snow's work? What is King Cholera? Who is John Snow? What's the truth of King Cholera? Read the passage quickly and match the main idea of each part. Para.1 Paras.2-3 Para.4 Para.5 hp//ww xgb com When?In the early 19th century Where?Europe What's the result?Millions of people died from the disease Who? A British doctor who even attend to Queen Victoria when she gave birth. What? He had a desire to destroy cholera once and for all. Task1. Read the 1st paragraph quicklyand fill in the mind map. What? It'soneof the most feared diseases in the world, because it causes severe diarrhoea,dehydration and even death Cholera John Snow Task 2 P33 d : Many deaths o e a: ec germs in .le hadn't conclusion drunk the water from the pump,and lived. E: The handle B:Snow marked on A woman and her of the pump a map theplaces daughter died in another was removed. where the people who part of London after solution died had lived process drinking water from the pump Match the following headers with the letters from the chart above. Write A-E in the blanks. P34 1.conclusion 2.evidence 3.process 4.solution 5.theories D B E peop treet e S Som road d p ie m rr u a p ter Th w D ccurrea evidenc C that cholera was A:It was believe caused by badair or near the water pumpin cholera germs food or water.theories Result: The water came from the river which had been polluted by the dirty water from London. 新教材 PH 23 The water from the pump was to blame. N DGE STR U No death happened here. multiple deaths happened here. 34 Clue:free beer from public house Public 工 house I R B M U 十 W N -I 26 25 24 27 28 30 Order Stage Kev words or sentences EXAMPLE 1 Find a problem Two contradictory theories 2 Ask a question 3 think of a method 4 collect data 5 analyse the results it's 6 find supporting evidence turn 7 draw a conclusion hfrp:/Auw xgb com Snow began by marking on a map the exact places where all hose who died had lived.There were multiple deaths near the water pump in Broad Street (especially house numbers 16,37. 38,and 40]However some households (such as 20 and 21 Broad Street,and 8 and 9 Cambridge Street]had had no deaths.These people worked in the pub at 7 Cambridge Street.They had been given free beer,and so had not drunk the water from the pump[Snow suspected that the water pump was to blame. What is more, in another part of London,a woman and her daughter had died of cholera after moving think of a method 一 collect data 。 analyse the results EMs- F supporting evidence Check your answerS. find away from Broad Street.It seemed that the woman liked the water from the pump so much that she had it delivered to her house every day.As a result of this evidence,John Snow was able to announce that the pump water camied cholera germs.Accordingly,he had the handle of the pumpremoved so that itcould not be used.Through this intervention ,the disease was stopped in its tracks. find a problem al,doctors in those days had two contradictory theories to explain how cholera spreaa. One theory was that bad air caused the disease.Anotherwas that cholera was particular streets the cholera outbreak was so severe that more than 500 people died in ten days.He was determined to find out why. caused by an infection from germs in food_or water Snow subscribed to the second theory.It was correct,but he still of cholera hit London in 1854,Sno draw a conclusion ask a question butbreak bt in two 7 stages of a scientific research hfrp:/ww xgb com < Fill in the blanks and review the 7 stages. Aslk_a question Rind a problem Rimd supporting evidence Draw a conclusion Amallyse the results Collect_data Thimk of a method Task4.Read Para.4 and 5 carefullyto answer the four questions. Task4.Read Para.4 and 5 carefully to answer the four questions. 1.What caused the outbreak of cholera in London in 1854? The water which came from the River Thames and had been infected by waste. Task4.Read Para.4 and 5 carefullyto answer the four questions. Para.5: ..Fortunately,we now know how to prevent cholera,thanks to the work of John Snow.Moreover,in his use of maps and statistics,Snow transformed the way scientists study diseases. n.统计数字 Task4.Read Para.4 and 5 carefully to answer the four questions. 3.Why was John Snow considered the father of modern epidemiology? 1.He helped people know how to prevent cholera. 2.He transformed the way scientists study diseases in use of map and statistics. Para.4: The truth was that the water from the Broad Street pump had been infected by waste....The people who drank this water were much more likely to get cholera than those who drank pure or boiled water. a.干净的 Task4.Read Para.4 and 5 carefully to answer the four questions. 4.How can we prevent cholera? By drinking pure or boiled water. 1.Q:What did Snow think cholera was caused? A:Snow thought that cholera was caused by Ask questions One way to approach a reading passage is to ask questions about it.Asking questions can help you understand the content.It can also help you think more deeply about the topic. 5. Q:HoW was une cnorera unreat aereatea A:The cholera threat was defeated thanks to the work of John Snow. What questions would you ask to get the following answers? P35 Complet e the graphic organizer and then retell retell how John Snow defeated“King Cholera”according to it. died from cholera, caused by bad air _ . the second but no one knew Theory2:Cholera was theory.He began how to prevent or caused by an infection from to investigate 。 treat it. germs in food or water Amalyse the resullts There were multiple deaths near the water pump in Broad Street .Some households had no deaths because they drank free beer.Snow suspected thatthe water pump was to blame Collect data Snow investigated the two particular streets where the cholera outbreak was_very severe_. He marked on a map the exact places where all those who died had lived. Kimd supportimg evidemce A woman and her daughter died of cholera though they had moved away, because they had the water delivered to their house every day . IDraw a comclusiom The pump water carried cholera germs Discussion:Critical Thinking Drink boiled water Wash hands often in oraer nou lo choose fresh sea food the infectious disease, Keep the kitchen clean AIDS.SARS deal with rubbish properly. Don't forget to wear a mask when you go out. do ? Homework: 1.Read the passage and review the words and expressions in it. 2.Retell how John Snow defeated cholera. Thanks $$