人教版高中英語(yǔ)選修8Unit2ReadingPPT課件

1、Unit 2 ReadingCloning: Where Is It Cloning: Where Is It Leading Us?Leading Us? 第1頁(yè)/共48頁(yè)exactcuttingtwinidenticalcommercialstraightforwardcomplicatedadj. 精確的; 準(zhǔn)確的n. 剪枝; 剪報(bào); 剪紙n. 雙胞胎之一; 孿生兒之一adj. 成對(duì)的; 成雙的adj. 同一的; 一模一樣的adj. 商業(yè)的; 貿(mào)易的adj. 簡(jiǎn)單的; 直接的; 坦率的adj. 復(fù)雜的; 難懂的Words andExpressions第2頁(yè)/共48頁(yè)undertakebr

2、eakthroughprocedurenucleussomaticembryocarriercastvt. 著手; 從事; 承擔(dān)n. 突破n. 程序; 步驟; 手續(xù)n. 原子核; 中心adj. 軀體的; 肉體的; 細(xì)胞體的n. 胚; 胚胎; 萌芽時(shí)期n. 攜帶者; 搬運(yùn)工; 運(yùn)輸工具vt. 扔; 投; 擲Words andExpressions第3頁(yè)/共48頁(yè)altogetherarbitraryfatecorrectionobjectobjectionimpactmediumadv. 總共; 完全地adj. 任意的n. 命運(yùn); 天命n. 改正; 糾正; 修正vi. 反對(duì); 不贊成n. 不贊成

3、; 反對(duì); 異議n. 撞擊; 沖擊; 巨大的影響n. (pl media) 媒介; 手段; 工具Words andExpressions第4頁(yè)/共48頁(yè)the mediaobtainattainmoralconservativeforbidaccumulate大眾傳播媒體（如電視、報(bào)紙等）vt. 獲得; 贏得vt. 獲得; 到達(dá)（水平、 年齡、狀況等）adj. 道德（上）的; 倫理的adj. 保守的; 守舊的vt. 禁止; 不準(zhǔn)vt. & vi. 積累; 聚積Words andExpressions第5頁(yè)/共48頁(yè)pay off cast downobject to in favour

4、 of 沮喪；不愉快得到好結(jié)果；取得成功；償清贊成；支持反對(duì)Match第6頁(yè)/共48頁(yè)Dolly the Sheep第7頁(yè)/共48頁(yè)Discussion1. How is a clone produced?2. What benefits can humans gain from cloning?3. What problems may arise when humans are cloned?第8頁(yè)/共48頁(yè)1. To summarize the main idea of the passage2. To tell how Dolly was produced3. To know why c

5、loning is a controversial issue第9頁(yè)/共48頁(yè)ABA: I think cloning is good for us. Because B: I think cloning is bad for us. Because Is cloning good or bad for us?Debate第10頁(yè)/共48頁(yè)These 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

6、never accept Im happy to accept a clone but I would never accept a clone I dont mind but 第11頁(yè)/共48頁(yè)Skimming for general idea第12頁(yè)/共48頁(yè) Whats the main idea of the text? A. Animal cloning is very valuable and can benefit the world. B. It explains how cloning works in the first successful cloned sheep, D

7、olly. C. It illustrates peoples views about Dollys appearance and cloning people. D. Both B & C.Choose the best answer.第13頁(yè)/共48頁(yè)What do you think is the writers point of view in this reading passage? Is it infavour of cloning or against it?I think the writer is _ because _.impartial he/she does

8、not state any personal opinion about cloningFill in the blanks.P12 3第14頁(yè)/共48頁(yè)P(yáng)rocedure of Cloning a Sheep第15頁(yè)/共48頁(yè)Scanning for specific information第16頁(yè)/共48頁(yè)1. From the first paragraph it can be inferred that _. A. cloning is a manmade technology B. cloning always exists around us C. cloning is very

9、strange to human beings D. cloning is only conducted in laboratories Choose the best answer.第17頁(yè)/共48頁(yè)2. The cloning of Dolly the sheep succeeded because _. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patienceC. the scientists were rewarded

10、 and got lots of moneyD. many other attempts to clone mammals failed第18頁(yè)/共48頁(yè)3. Dolly the sheep _.A. looked exactly like the sheep that provides the egg cellB. was the exact copy of the sheep that provides the nucleusC. looked like the sheep that gave birth to itD. had the characteristics of all thr

11、ee sheep 第19頁(yè)/共48頁(yè)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 as healthy as the original one第20頁(yè)/共48頁(yè)Answer these questions.1 What are

12、 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 1第21頁(yè)/共48頁(yè)1 .What are the two major uses of cloning?2 .Why is it e

13、asier 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 cloning of animals is very complicated.第22頁(yè)/共48頁(yè)3. What w

14、as 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 religious reasons.第23頁(yè)/共48頁(yè)Fill in the blanks.

15、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.copyNaturalcutting第24頁(yè)/共48頁(yè)Two maj

16、or 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 / numbersvalue第25頁(yè)/共48頁(yè)The (6)_of cloningDolly thesheep (7) _ female sheep are needed. From femal

17、e 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 (8) _ is born. pro

18、cedure /process /stepsThreelamb第26頁(yè)/共48頁(yè)Two 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 / views第27頁(yè)/共48頁(yè)Fill in t

19、he chart using the information from the text. Add one reason of your own in each column.Problems or dangers of cloningAdvantages of cloningP12 2第28頁(yè)/共48頁(yè)P(yáng)roblems or dangers of cloningAdvantages of cloningAnimal clones may develop the illnesses of older animals.Medical cloning could produce cures for

20、 serious illnesses in humans. Animal clones may die younger than the donor animals.Cloning plants can produce plants of similar quality for sale.第29頁(yè)/共48頁(yè)P(yáng)roblems or dangers of cloningAdvantages of cloningEvil leaders may want to clone themselves.Cloning plants can be useful for research on new plan

21、t species.There are moral objections to cloning human beings.Cloning can help save endangered animals.第30頁(yè)/共48頁(yè)Careful reading重難點(diǎn)句式分析第31頁(yè)/共48頁(yè)1. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.時(shí)間狀語(yǔ)從句時(shí)間狀語(yǔ)從句這種現(xiàn)象也發(fā)生在動(dòng)物身上，從同一個(gè)原生卵子產(chǎn)生性別和相貌相同的雙胞

22、胎也是克隆。original egg原生卵子原生卵子定語(yǔ)定語(yǔ) 修飾修飾twinsidentical 同一的；完全相同的同一的；完全相同的第32頁(yè)/共48頁(yè)TranslationThe two rooms were virtually identical.1. 這兩個(gè)房間幾乎一模一樣。 When he was a child he was always trying out new ideas.2. 他小時(shí)候總是嘗試一些新的想法。第33頁(yè)/共48頁(yè)2. Although at present human egg cells and embryos needed for cloning resea

23、rch are difficult to obtain, newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions.讓步狀語(yǔ)從句讓步狀語(yǔ)從句盡管目前供克隆研究的人體細(xì)胞和胚胎還很難得到，但是報(bào)紙報(bào)道說(shuō)，有些邪惡頭目希望把自己克隆出來(lái)以實(shí)現(xiàn)他們的野心。attain實(shí)現(xiàn)；獲得實(shí)現(xiàn)；獲得v-ed 短語(yǔ)修飾短語(yǔ)修飾human egg cells and embryoswrite of vt. 寫(xiě)寫(xiě), 記述記述第34頁(yè)/共48頁(yè)TranslationHe has attained the h

24、ighest grade in his music exams.1.他在音樂(lè)考試中得了最高分。 Hes rather shy, although hes not as bad as he used to be.2.他很靦腆，但是比以前要好一些了。第35頁(yè)/共48頁(yè)Cloning is a way of _ of another animal or plant. It has two major uses. One is to produce commercial quantities of plants; _ is for research on new plant species and f

25、or 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 sheep seemed to grow normally, it died after a short life of only six and a half ye

26、ars in the world. the othermaking an exact copy whilewiththatpaid offComplete the passage with proper words, which will help you retell the text.第36頁(yè)/共48頁(yè)As a result, it _ (puzzle) all scientists with different questions. Besides, the appearance of Dolly raised a storm of _ (object) and public imagi

27、nation. _ 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 cloning. Others continued to accumulate evidence of abundant medical aid

28、_ could be provided by cloning.puzzledobjectionsItusingwhich/thatinto第37頁(yè)/共48頁(yè)Look at these pictures below first.第38頁(yè)/共48頁(yè)第39頁(yè)/共48頁(yè)第40頁(yè)/共48頁(yè)“Holy great mother of God, Ive been cloned!”第41頁(yè)/共48頁(yè)1. 克隆技術(shù)現(xiàn)在還不成熟克隆技術(shù)現(xiàn)在還不成熟, 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. 克隆人的身份難以認(rèn)定克隆人的身份難以認(rèn)定, 他他 們與被克隆者之間的關(guān)系們與被克隆者之間的關(guān)

29、系無(wú)法納入現(xiàn)有的倫理體系。無(wú)法納入現(xiàn)有的倫理體系。反對(duì)克隆人Some opinions about clone第42頁(yè)/共48頁(yè)3. 克隆技術(shù)有可能被濫用, 成為恐怖分子的工具。4. 從生物多樣性上來(lái)說(shuō), 大量基因結(jié)構(gòu)完全相同的克隆人, 可能誘發(fā)新型疾病的廣泛傳播, 對(duì)人類的生存不利。第43頁(yè)/共48頁(yè)1. “不讓我們克隆人, 就是不讓我們修正我們的錯(cuò)誤, 人類歷史難道能夠這樣構(gòu)造嗎？” 紐約時(shí)報(bào)書(shū)評(píng)4. “人體商業(yè)化是人類經(jīng)濟(jì)活動(dòng)中無(wú)與倫比的成就, 毫無(wú)疑問(wèn), 克隆技術(shù)的出現(xiàn)將為世人創(chuàng)造一個(gè)最為廣泛和深遠(yuǎn)的市場(chǎng)?！?英國(guó)經(jīng)濟(jì)學(xué)家雜志。支持克隆人What about you?Itisaquestionworth thinking about. 第44頁(yè)/共48頁(yè)Now two minutes to test your spelling.1. English-Chinese twin, breakthrough, procedure, carrier, co