译林牛津版必修7Unit2FitforlifeReading课件.ppt

Unit 2 ReadingTwo life-saving medicines Do you know what are they?aspirinpenicillin1.How much do you know about the two medicines?(as far as you know what can these two medicines be used for?)Lead-inRead the article quickly and try to find the answers to the questions in Step :Step2.What did Fleming,Florey and Chain share?In 1900.The Nobel Prize in Physiology or Medicine.1.When was aspirin first sold as a standardized tablet?Detailed ReadingStudents A read the passage Aspirin only,and try to finish tasks 1,2&3 in Step.Students B read the passage Penicillin only,and try to finish tasks 1,2&3 in Step.Share your information1.Check your work with your teammates.2.Students A help students B finish doing tasks1,2&3 in Step.Step1.When did people find that drinking a special tea could reduce body pains?2.In 1897.About 3,500 years ago.2.When was ASA first made from other chemicals?Development of aspirin1899190019501971197719882003first trials took placesold in shops as a tabletappeared in the Guinness Book of Records as the best-selling painkillerproved to be a blood-thinning medicineprevent a strokereduce the risk of colon cancerreduce blood sugar levelsHow aspirin helps peoplereduce fever and help stop painsreduce the risk of heart attacksprevent a strokereduce the risk of colon cancerhelp people with diabetesby thinning bloodby 40 per centby reducing blood sugar levelsClass activity(1)Suppose Students A are chemists at a drugstore.Students B are customers who want to buy aspirin,but they know little about the use of aspirin.Now chemists recommend aspirin to customers.StepShare your informationStudents B help students A finish doing tasks1,2&3 in Step.1.When and where did Alexander Fleming find penicillin?In1928,in the mould grown on a special transparent jelly.2.What problems did Fleming have after discovering Penicillin?He was unable to purify it.3.When was penicillin purified for mass production?It was not until the World War that two other scientists used new chemical techniques to purify it.Because Fleming discovered penicillin,Florey and Chain managed to use new chemical techniques to purify it,so they could turned penicillin into the great drug of the 20th century.4.Why did Fleming,Florey and Chain share the Nobel Prize in Physiology or Medicine in 1945?Use of penicillinhelp in treating wounds and illnesses caused by bacteriatreat other illnesses including pneumoniaan illness that affects the lungs Penicillin,discovered by Alexander Fleming in 1928,is _ to be one of the most important medicines in _ society.Howard Florey and Ernst Chain _ to use new chemical techniques to _ it to be a medicine._ its widespread use,many lives were saved during World War II.It is also used to treat other illnesses _ pneumonia.In 1945,Fleming,Florey and Chain _ the Nobel Prize in _ or Medicine for their work.consideredcontemporarymanagedpurifyDue toincludingsharedPhysiology Class activity(2)Further discussion:Penicillin is very useful in many ways.But in fact,it is not widely used in many hospitals in China.Why?Please list some possible reasons and your own opinions to this phenomenon.Give a short report of your discussion later.1.Effects of penicillin2.Reasons(why penicillin is not widely used in many hospitals in China)3.Your own opinions to this phenomenon.For example/for instanceHowever/therefore/but.Firstly/secondly/whats more/in addition/furthermore/besidesIn my opinion/From my point of view.Writing青霉素(penicillin)这种药物有很多的功效，但是目前我国的很多医院并没有被广泛的使用。主要原因可能是：1.青霉素比较便宜，不能给医院带来高利润。2.青霉素难以完全提纯，有很多副作用。请你就此用英语写一篇150字左右的文章来谈谈自己和观点和看法。