人教版高中英语选修8 Unit 2 Reading课件

1、选修选修8 8Unit 2 ReadingCloning: Where Is It Cloning: Where Is It Leading Us?Leading Us? exactcuttingtwinidenticalcommercialstraightforwardcomplicatedadj. 精确的精确的; 准确的准确的n. 剪枝剪枝; 剪报剪报; 剪纸剪纸n. 双胞胎之一双胞胎之一; 孪生儿之一孪生儿之一adj. 成对的成对的; 成双的成双的adj. 同一的同一的; 一模一样的一模一样的adj. 商业的商业的; 贸易的贸易的adj. 简单的简单的; 直接的直接的; 坦率的坦率的ad

2、j. 复杂的复杂的; 难懂的难懂的Words andExpressionsundertakebreakthroughprocedurenucleussomaticembryocarriercastvt. 着手着手; 从事从事; 承担承担n. 突破突破n. 程序程序; 步骤步骤; 手续手续n. 原子核原子核; 中心中心adj. 躯体的躯体的; 肉体的肉体的; 细胞体的细胞体的n. 胚胚; 胚胎胚胎; 萌芽时期萌芽时期n. 携带者携带者; 搬运工搬运工; 运输工具运输工具vt. 扔扔; 投投; 掷掷Words andExpressionsaltogetherarbitraryfatecorrect

3、ionobjectobjectionimpactmediumadv. 总共总共; 完全地完全地adj. 任意的任意的n. 命运命运; 天命天命n. 改正改正; 纠正纠正; 修正修正vi. 反对反对; 不赞成不赞成n. 不赞成不赞成; 反对反对; 异议异议n. 撞击撞击; 冲击冲击; 巨大的影响巨大的影响n. (pl media) 媒介媒介; 手段手段; 工具工具Words andExpressionsthe mediaobtainattainmoralconservativeforbidaccumulate大众传播媒体（如电视、大众传播媒体（如电视、报纸等）报纸等）vt. 获得获得; 赢得赢得

4、vt. 获得获得; 到达（水平、到达（水平、 年龄、状况等）年龄、状况等）adj. 道德（上）的道德（上）的; 伦理的伦理的adj. 保守的保守的; 守旧的守旧的vt. 禁止禁止; 不准不准vt. & vi. 积累积累; 聚积聚积Words andExpressionspay off cast downobject to in favour of 沮丧；不愉快沮丧；不愉快得到好结果；取得成功；得到好结果；取得成功；偿清偿清赞成；支持赞成；支持反对反对MatchDolly the SheepDiscussion1. How is a clone produced?2. What bene

5、fits can humans gain from cloning?3. What problems may arise when humans are cloned?1. To summarize the main idea of the passage2. To tell how Dolly was produced3. To know why cloning is a controversial issueABA: I think cloning is good for us. Because B: I think cloning is bad for us. Because Is cl

6、oning good or bad for us?DebateThese expressions may help. Do you think it is wise to ?Whats your opinion of ? I think you should I agree with you that I would never accept Im happy to accept a clone but I would never accept a clone I dont mind but Skimming for general idea Whats the main idea of th

7、e text? A. Animal cloning is very valuable and can benefit the world. B. It explains how cloning works in the first successful cloned sheep, Dolly. C. It illustrates peoples views about Dollys appearance and cloning people. D. Both B & C.Choose the best answer.What do you think is the writers po

8、int of view in this reading passage? Is it infavour of cloning or against it?I think the writer is _ because _.impartial he/she does not state any personal opinion about cloningFill in the blanks.P12 3Procedure of Cloning a SheepScanning for specific information From the first paragraph it can be in

9、ferred that _. A. cloning is a manmade technology B. cloning always exists around us C. cloning is very strange to human beings D. cloning is only conducted in laboratories Choose the best answer.2. The cloning of Dolly the sheep succeeded because _. A. its easier to clone a sheep than other animals

10、 B. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failed3. Dolly the sheep _.looked exactly like the sheep that provides the egg cellwas the exact copy of the sheep that provides the nucleusC.

11、looked like the sheep that gave birth to itD. had the characteristics of all three sheep 4. It can be inferred from the passage that a cloned animal _.A. usually lives as long as the original oneB. usually lives longer than the original oneC. usually dies earlier than the original oneD. is usually a

12、s healthy as the original oneAnswer these questions.1 What are the two major uses of cloning?2 Why is it easier to make commercial plant clones than animal clones?3 What was the first clone from an adult animal? At what age did this clone die?4 Why is cloning controversial in some countries?P12 11 .

13、What are the two major uses of cloning?2 .Why is it easier to make commercial plant clones than animal clones?The first use is to produce commercial quantities of plants. The second is to research on new plant species and do medical research on animals.Cloning plants is straightforward, but the clon

14、ing of animals is very complicated.3. What was the first clone from an adult animal? At what age did this clone die?4. Why is cloning controversial in some countries?The first clone from an adult animal was Dolly the sheep. She died in 2003.Cloning is controversial in some countries for moral and re

15、ligious reasons.Fill in the blanks.Definition Cloning is a way to exactly (1)_ another plant or animal.(2) _cloning A new plant is born from the (3) _ of a growing one. In a laboratory, a new plant is grown out of a small part of an original one. An egg produces twins identical in sex and appearance

16、.copyNaturalcuttingTwo major advantages Gardeners produce plants in large (4) _ _, which will bring in much money. It is of great (5) _ for scientists to do different kinds of research on new plant species or animals. quantities / numbersvalueThe (6)_of cloningDolly thesheep (7) _ female sheep are n

17、eeded. From female sheep A, an egg cell is taken, with its nucleus removed. From female sheep B, a somatic cell is taken, with a nucleus picked. The egg cell from Sheep A and the nucleus from Sheep B are joined together to produce an embryo. The embryo is put into female sheep C and months later a (

18、8) _ is born. procedure /process /stepsThreelambTwo disadvantages It got an illness which is more (9) _ to a much older animal. Its life span was a half shorter.Two different(10)_ It is possible to use cloning to cure illnesses. It is unethical to clone a human. appropriateopinions / viewsFill in th

19、e chart using the information from the text. Add one reason of your own in each column.Problems or dangers of cloningAdvantages of cloningP12 2Problems or dangers of cloningAdvantages of cloningAnimal clones may develop the illnesses of older animals.Medical cloning could produce cures for serious i

20、llnesses in humans. Animal clones may die younger than the donor animals.Cloning plants can produce plants of similar quality for sale.Problems or dangers of cloningAdvantages of cloningEvil leaders may want to clone themselves.Cloning plants can be useful for research on new plant species.There are

21、 moral objections to cloning human beings.Cloning can help save endangered animals.Careful reading重难点句式分析重难点句式分析1. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.时间状语从句时间状语从句这种现象也发生在动物身上，从同一个原这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是生卵子产生性别和相

22、貌相同的双胞胎也是克隆。克隆。original egg原生卵子原生卵子定语定语 修饰修饰twinsidentical 同一的；完全相同的同一的；完全相同的TranslationThe two rooms were virtually identical.1. 这两个房间几乎一模一样。这两个房间几乎一模一样。 When he was a child he was always trying out new ideas.2. 他小时候总是尝试一些新的想法。他小时候总是尝试一些新的想法。2. Although at present human egg cells and embryos needed

23、 for cloning research are difficult to obtain, newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions.让步状语从句让步状语从句尽管目前供克隆研究的人体细胞和胚胎还尽管目前供克隆研究的人体细胞和胚胎还很难得到，但是报纸报道说，有些邪恶头很难得到，但是报纸报道说，有些邪恶头目希望把自己克隆出来以实现他们的野心。目希望把自己克隆出来以实现他们的野心。attain实现；获得实现；获得v-ed 短语修饰短语修饰human egg cells

24、and embryoswrite of vt. 写写, 记述记述TranslationHe has attained the highest grade in his music exams.1.他在他在音乐考试音乐考试中得了最高分。中得了最高分。 Hes rather shy, although hes not as bad as he used to be.2.他很他很腼腆腼腆，但是比以前要好一些了，但是比以前要好一些了。Cloning is a way of _ of another animal or plant. It has two major uses. One is to pr

25、oduce commercial quantities of plants; _ is for research on new plant species and for medical research on animals. Cloning plants is straightforward _ cloning animals is difficult to undertake. However, scientists hard work _ in 1996 _ the cloning of Dolly the sheep. Though it was encouraging _ the

26、sheep seemed to grow normally, it died after a short life of only six and a half years in the world. the othermaking an exact copy whilewiththatpaid offComplete the passage with proper words, which will help you retell the text.As a result, it _ (puzzle) all scientists with different questions. Besi

27、des, the appearance of Dolly raised a storm of _ (object) and public imagination. _ got people to think about the possibilities of _(use) clones to cure serious diseases and even to produce human beings. However, some governments became more nervous and conservative and they forbade research _ human

28、 cloning. Others continued to accumulate evidence of abundant medical aid _ could be provided by cloning.puzzledobjectionsItusingwhich/thatintoLook at these pictures below first.“Holy great mother of God, Ive been cloned!”1. 克隆技术现在还不成熟克隆技术现在还不成熟, 克克 隆人可能有很多先天性生隆人可能有很多先天性生理缺陷。理缺陷。2. 克隆人的身份难以认定克隆人的身份难

29、以认定, 他他 们与被克隆者之间的关系们与被克隆者之间的关系无法纳入现有的伦理体系。无法纳入现有的伦理体系。反对克隆人反对克隆人Some opinions about clone3. 克隆技术有可能被滥用克隆技术有可能被滥用, 成为恐怖成为恐怖分子的工具。分子的工具。4. 从生物多样性上来说从生物多样性上来说, 大量基因结大量基因结构完全相同的克隆人构完全相同的克隆人, 可能诱发新可能诱发新型疾病的广泛传播型疾病的广泛传播, 对人类的生存对人类的生存不利。不利。1. “不让我们克隆人不让我们克隆人, 就是不让我们修正就是不让我们修正我们的错误我们的错误, 人类历史难道能够这样构人类历史难道能够这样构造吗？造吗？” 纽约时报书评纽约时报书评4. “人体商业化是人类经济活动中无与伦人体商业化是人类经济活动中无与伦比的成就比的成就, 毫无疑问毫无疑问, 克隆技术的出现克隆技术的出现将为世人创造一个最为广泛和深远的将为世人创造一个最为广泛和深远的市场。市场。” 英国英国经济学家经济学家杂志。杂志。支持克隆支持克隆人人What about you?Itisaquestionworth thinking about. Now two minutes to test your spelling.1.