Unit21 Warm-up & Lesson 1 Super Athletes—Pre-reading学案（含答案）

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1、 If you are taking vitamin supplements(补充物) to reduce your risk of heart disease or cancer， a group of health experts want you to know that those vitamins may actually increase your risk of cancer. The US Preventive Services Task Force came to this conclusion after reviewing dozens of studies. Nearl

2、y half of adults in the US take at least one vitamin or mineral supplement on a regular basis.These pills are advertised as a way to promote general health.In some cases，they are promoted as cancer fighters and heart protectors. Studies in animals and in laboratory dishes suggest that oxidative(氧化性的

3、) stress contributes to diseases like cancer and heart disease.If so ， there is a reason to believe that antioxidantsincluding vitamins A，C，and Ecould be useful as preventive medicines. But when the Task Force examined the medical evidence on vitamins，it found “inadequate evidence” to support the co

4、nclusion that vitamin and mineral supplements benefit healthy adults. Dr.Virginia Moyer，who heads the Task Force，said in a statement that they all wanted to find ways to prevent these diseases like cancer and heart disease.But so far，the medical evidence does not show that taking vitamins is helpful

5、. However，the Task Force did find “adequate evidence” that people with a raised risk for lung cancer actually increase their risk further by taking some pills containing vitamin A. The Task Force recommendations of taking vitamins regularly apply to healthy adults aged 50 and older who dont have “sp

6、ecial nutritional needs”The advice does not apply to children， women who are pregnant or may become pregnant，or people who have to take supplements because they cant get all their essential nutrients from their diet. 阅读短文，判断正(T)误(F) 1Studies in animals find out oxidative stress can lead to heart dis

7、ease and cancer.(T) 2A 60-year-old healthy worker cant take vitamins regularly according to the advice of the Task Force.(F) Warm- up & Lesson 1 Super AthletesPre- reading 匹配左边的单词和右边的汉语意思 第一组 1interval A循环 2circulate B消化；领悟 3pump C交换 4digest D间隔；间歇 5swap E用泵抽出(注入) 答案 1.D 2.A 3.E 4.B 5.C 第二组 6hearing

8、 A(程度)最大的，极度的 7pulse B滥用 8supreme C听觉 9abuse D容忍 10tolerate E脉搏 答案 6.C 7.E 8.A 9.B 10.D 第三组 11fundamental A每年的，一年一次的，年度的 12doubtful B寻找 13seek C怀疑的，不肯定的 14annual D站不住脚的，不易令人相信的 15lame E根本的；基础的 答案 11.E 12.C 13.B 14.A 15.D 第四组 16compulsory A与(其他事物)相矛盾 17controversial B反对 18oppose C强制性的，义务的 19contradic

9、t D违反，违背 20violate E有争议的 答案 16.C 17.E 18.B 19.A 20.D Step1 Fast- reading 1What is the main idea of the passage? AAll the athletes were caught doping in 2006 cycling race. BThe future of the sporting world is being affected by Maurice Greene. CAll the athletes are training hard for the games. DThe sp

10、orting world is being seriously affected by doping and gene-therapy. 答案 D 2Match the main idea with each paragraph. (1)Paras.12 AThe Olympic spirit (2)Paras.36 BGene-therapy (3)Para.7 CRecords have fallen (4)Para.8 DDoping 答案 (1)C (2)D (3)B (4)A Step 2 Careful- reading .True(T) or False(F) 1Accordin

11、g to the whole text，better equipment，training and diet are the reasons given for improved performances.(F) 2Ben Johnson would still be the 100 metres world record holder even if he had taken drugs in the 1988 Olympics.(F) 3Doping can help athletes enhance their performance，however，the drugs also cau

12、se serious health problems in later life for those who abuse them.(T) 4Doping is only a problem in athletics.(F) 5The Olympic spiritthe spirit of competition emphasises winning rather than taking part.(F) .Read the passage carefully and choose the best answer. 1Some past sports predictions were alwa

13、ys . Aright Bwrong Csimple Dmature 答案 B 2Whats the drugs legal effect? ATo make the athletes run faster. BTo make the audience cheer more excitedly. CTo cure the patients. DTo make money for the chemists. 答案 C 3Which is RIGHT according to the passage? ASome athletes want to achieve the championship

14、with the help of doping. BIt is easy to clarify whether an athlete has taken drugs. CDoping is the only problem in track and field. DGene-therapy will benefit the athletes. 答案 A Step 3 Post- reading After reading the passage，please fill in the following blanks. Athletic performances have 1.continual

15、ly(continue) improved since the first Olympic Games.However，improvements 2.have begun(begin) to slow down recently.While 3.talking(talk) about breaking records，we come across the issue of performance-enhancing drugs，4.which are originally developed to help people with illnesses，but they are often us

16、ed by some athletes to perform 5.better(well) than usual.6.In other words ， doping is a fundamental form of cheating.Unfortunately，it is difficult to catch athletes 7.using(use) illegal drugs.The winners have to be tested 8.while other participants are only tested at random.New drugs 9.are developed

17、(develop) all the time and drug tests for sporting events are often one step behind.In the future，another big issue is gene-therapy.Athletes who have their genes 10.changed(change) might perform much better in the match.In todays world，if doping and gene-therapy continue to affect the outcomes of ma

18、jor sporting events，the Olympic spirit will have lost its meaning. Step 4 Sentence- learning 1 These drugs are originally developed to help people with illnesses， but in the wrong hands， they create supreme athletes making them faster and stronger than is normal for human beings. 句式分析 本句是由 but 连接的并列

19、句。 第一个分句中不定式 to help people with illnesses 作 目的状语；第二个分句中现在分词短语 making.作状语；than 引导比较状语从句。 自主翻译 开发这些药物原本是用来帮助病人的，但一旦用于歧途，它们会创造出比常人 更快、更强的超级运动员。 2Taking these drugs is known as “doping” and although they enhance performance，they also cause serious health problems in later life for those who abuse them.

20、 句式分析 Taking these drugs 是动名词短语在句中作主语；is known as 意为“被称为”；并 列连词 and 后的句子中含有 although 引导的让步状语从句和 who 引导的定语从句。 自主翻译 服用这些药物的行为被称为“服用兴奋剂”。对滥用兴奋剂的运动员来说，尽 管兴奋剂能提高他们的成绩，但也会给他们日后的生活带来严重的健康问题。 3Floyd Landis made several lame excuses blaming medicine he had been taking for an injury but these were all in vain

21、. 句式分析 本句是由 but 连接的并列句。第一个分句中 blaming medicine 是现在分词短语作 状语；he had been.是定语从句，修饰 medicine。 自主翻译 弗洛伊德 兰蒂斯做了几次站不住脚的辩解，责怪他因伤服用的药物，但这些都 是徒劳的。 4The Olympic spiritthe spirit of competition which emphasises taking part rather than winninghas been violated by the desire to succeed at all costs. 句式分析 本句是复合句。句子的主干是 The Olympic spirit has been violated by the desire to succeed at all costs。the spirit of competition 是同位语；which 引导定语从句，修饰 the spirit of competition。 自主翻译 人们不惜任何代价来获胜的愿望违背了重在参与而不是获胜的奥林匹克精神。