m7u2jiaoan文档.doc

Unit 2 Fit for lifeReading Two life-saving medicinesTeaching aims:After this class, the students will be able to:1. gain the main idea through first and second reading;2. improve students thinking ability through discussion;3. understand some medical terms.Teaching procedures: Step1 Revision1. 药剂师；化学家 _2. 外科医师_3. 革命 _ 4. 循环；传播_5. 不正常的 _ 6. 症状；征兆_7. 对有益 _ 8. 对吃惊 _9测试，试验；参加选拔_10. 使筋疲力尽；使厌烦_Step 2 Lead-in1. As we all know, health is very important to us. Do you know how to keep healthy?2. When people fall ill, what will they do?3. Do you know what they are?4. Do you know what illness these two medicine can cure? Step 3 Skimming1. When was aspirin invented?2. What did Fleming, Florey and Chain share?Step 4 Careful readingPart One AspirinActivity one: read the first paragraph carefully and then answer some detailed questions and fill in the form about the development if Aspirin in ancient times1. When did people find that drinking a special tea could reduce fever and pain?2. When was aspirin first made from other chemicals? The development of the Aspirin in the ancient timesTimeDevelopment3,500 years ago2,500 years agoIn 1897In 1899Activity two: Read the second paragraph and try to fill in the form below.The development of the Aspirin in the modern timesTimeDevelopment In 1900In 1950In 1971In 1977In 2003Fill in the form about the effects of AspirinEffects of AspirinPart Two PenicillinActivity three: Read the second part quickly, and answer the following questions. 1. Where did Alexander Fleming find penicillin? 2. What illnesses did Fleming think the mould might be used to treat?3. What difficulties did Fleming have in developing penicillin as a drug?Activity four: Read the passage again and try to fill in the form belowEffects of penicillinStep 5 Consolidation Fill in the blanks with proper words according to the reading material.Two life-saving medicinesAspirinInventionl In _1_times, people chewed on leaves or drank a kind of tea or juice made from certain leaves or tree bark to reduce body _2_ and fever.l In 1897, Dr. Felix Hoffman produced aspirin and two years later, his company began to try it _3_ among patients.l In 1900, it was sold in the _4_ of tablets and soon it became the _5_ medicine in the world for pain relief. Functionsl It can reduce fever and help stop pain.l It has the _6_ to reduce the risk of heart attacks and help prevent strokes.l It can reduce the risk of some cancers _7_ 40%. l It can reduce blood sugar levels.PenicillinInvention l In 1928, Alexander Fleming found the blue mould killed the bacteria in an experiment by _8_. He realized that the mould might have an _9_ in treating some illnesses caused by bacteria.l In 1940, two other scientists succeeded in purifying it and made the mass production _10_.Significancel It saved millions of lives during World War II.Step8 Discussion1. What do you think the world would be like if there were no medicines?2. Do you believe that wonder drugswill be invented to treat diseases like AIDS in the future?3. Do you believe that someday people will i