人教课标必修五unitreading课件

Book 5 Unit 1 Great Scientists Can you find out the answers to the following puzzles? Task 1 A guessing game Who is he? He has made a famous kite experiment. He learned a lot from it and invented lightning rod(避雷针). He is Benjamin Franklin Never leave that until tomorrow, which you can do today. 今日事今日事, ,今日毕今日毕. . Who is he? He is called the greatest scientist in the 20th century. He is famous for the Theory of Relativity. He is Albert Einstein Imagination is more important than knowledge Who is he? He invented electric bulbs. He made more than 1,000 inventions during his life. He is Thomas Alva Edison Genius is one percent inspiration and ninety- nine percent perspiration. 天才就是百分之九十九的汗水加上百分天才就是百分之九十九的汗水加上百分 之一的灵感之一的灵感. . Who is she? She is a woman scientist. She discovered radium(镭)and polonium(钋). In her life, she won the Nobel Prize twice. She is Marie Curie Nothing in life is to be feared. It is only to be understood. 生活中没有什么可怕的东西生活中没有什么可怕的东西, ,只有需要只有需要 理解的东西理解的东西 . . Who is he? He made the first telescope in the world. His observations show that the earth moves around the sun. He is Galileo Galilei You cannot teach a man anything. You can only help him find it within himself. 你不可能把一切都教给一个人，你不可能把一切都教给一个人， 你只能帮助他从内心你只能帮助他从内心 去发现（和了解）事物。去发现（和了解）事物。 1.Which scientist discovered that objects in water are lifted up by a force that helps them float? Archimedes (287-212 BC) an ancient Greek mathematician 8,9 7 16 37 20 8 9 pump 38 40 BROAD STREET CAMBRIDGE STREET 21 John Snows Cholera Map 7 Pub Two theories In 1854 500 , 10 16, 37, 38 and 40 20 , 21; 8 , 9 7 The first suggested thatmultiplied in the air;. The second suggestedabsorbed this disease into their bodies with their meals. Another outbreak hit London. More than 500 people had died in 10 days. These numbers in Broad Street near the water pump had many of the deaths 20 and 21 Broad Street and 8 and 9 Cambridge Street had no deaths.They didnt drink the water from the Broad Street pump. These families worked in the pub at 7 Cambridge Street. Read the passage and number these events in the order that they happened. John Snow began to test two theories. An outbreak of cholera hit London in 1854. He announced that the water carried the disease. John Snow marked the deaths on a map . John Snow investigated two streets where the outbreak was very severe. King Cholera was defeated. He found that most of the deaths were near a water pump. He had the handle removed from the water pump . 2 1 4 7 3 8 5 6 Carefulreading: Para- graph Stages in an experiment Example in this investigation 1Find a problem 2Make a question 3Think of a method 4Collect results 5Analyse results 6 find supporting evidence 7Draw a conclusion What cause cholera? Which theory is correct? Collect data on those who were ill or died and where they got their water. Plot information on a map to find out where people died or did not die. Analyse the water to see if that is the cause of the illness. Find other evidence to support the analysis. The water is to blame. The source of all drinking water should be examined so that it is safe. The passage mainly tells us that _ . A. the cause of cholera was polluted water B. John Snow was a well-known doctor in London C. the source of all drinking water should be examined D. John Snow did some research and helped to solve “King Cholera” What was the key help for John Snows discovery? A.The government. B.The woman moving away from Broad Street. C.The water company . D.The map made by himself. Read the passage again and fill in the blanks: John Snow was a well-known _ 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 be _ and new methods of _ with polluted water be found. Finally, “King Cholera” was defeated. doctor 19thcause defeatbroke marked pump source examineddealing (in 5 minutes) Read the passage again Read the passage again and answer these questions.and answer these questions. 1. Cholera was a 19th century 1. Cholera was a 19th century disease. What disease do you disease. What disease do you think is similar to cholera today?think is similar to cholera today? KEY: Four diseases, which are similar today, are SARS, AIDS, TB( 肺结核) and bird-flu, because they are both very serious, have an unknown cause and need public health care to solve them. 2. John Snow believed Idea 2 was right. How did he finally prove it? KEY: John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water. 3. Do you think John Snow would have solved this problem without the map? Give a reason. KEY: No. The map helped John Snow organize his ideas. He was able to identify those households that had many deaths and check their water- drinking habits. He identified those houses that had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause. 5.Why couldnt the cholera be under control at first? Neither its cause, not its cure was understood.6. The passage mainly tells us that _ . A. the cause of cholera was polluted water B. John Snow was a well-known doctor in