北师大版高中英语选修7Unit 21 Human Biology reading课件 （共23张PPT）

课件23张PPT。100 metres in 8 seconds?Lesson 1 Super AthletesTeaching objectives: At the end of this lesson, you will: 1. Understand the text and get the main information. 2. Understand and use some of the topic words. 3. Talk about doping, gene therapy and Olympic spirit using the information in the text. 4. Express your opinions toward doping, gene therapy and Olympic spirit. Which champion athlete do you think can run 100 meters in 8 seconds? Is it possible for you?Maurice Greene 第一位同时拥有50米、60米和100米3 项世界记的男选手。 Floyd Landis 2006年环法自行车赛冠军, 第三位获此殊荣的美国人 Marion Jones 2000年悉尼奥运会 女子100米、200米、4x400米接力 冠军 Florence Griffith 奥运短跑三项金牌得主，同时也是100米及200米短跑的世界纪录保持人 Ben Johnson 汉城奥运会以惊人成绩打破男子百米世界纪录并夺得金牌 Super AthletesWhat is the Olympic spirit? Is it good for athletes to cheat in the competition?Fast ReadingWhat is the general idea of the passage?The athletes who took part in the first Olympic Games are not as fast as athletes today. B. Doping is a huge problem in the sporting world. C. The present and future of the sporting world is being seriously and negatively affected by doping and gene-therapy. D. Ben Johnson, Florence Griffith and Floyd Landis have all shocked the world by their speed. Read the text again, match the key information with each part.Records have fallenDopingGene-therapy Olympic spiritPart one. (1-2)Part two. (3-6)Part three. (7)Part four. (8)Important phrases:年复一年 减慢，减速 碰到 试图做某事 随便地，随意地 徒然，白费力气 不管多大代价，无论如何 田径运动 打破记录 被称作；以……而著名 year after yearslow down come acrossseek to do at random in vain at all costs track and field break the record be known as Now please read Para. 1&2 and find out:What reasons made athletes’ performances improve? How are their performances recently? It is due to better equipment, training and diet.Recently, athletes’ improvements have begun to slow down.DopingIn order to enhance their performances, they useGene-therapyDoping are originally developed to 1._____ But in the wrong hands, doping creates 2._____, It also causes 3._____for those who 4._____ them.The sports world doesn’t 5._____ doping as it is a form of 6._____ Doping affects both athletics and 7. _____.It’s not easy to catch using illegal drugs because： 8.It’s_____for winners to be tested. 9._____are developed all the time. 10.Drug tests are_____ _____ supreme athletes serious health problems help people with illness toleratecheatingcompulsoryNew drugsone step behindevery sportuseattituderesult/effecttroubleabuseGene therapy Read and find Read Para. 7 and find out some information about gene therapy.useattitudepossible resultpossible troubleIt is to _____ and _____ by changing genes.Many people _____ further research into it.Athletes might be able to do the_____ dash _____; marathon in _____It would _____to find out; It would _____the whole spirit of sport.opposebuild muscleincrease str ... ...