高中英語(yǔ)選修（8）Unit2Cloning

1、高中英語(yǔ)選修（8）Unit 2 Cloning The First Period (Reading)廣西南寧市南寧外國(guó)語(yǔ)學(xué)校 林萬(wàn)春Teaching goals教學(xué)目標(biāo)1. Target language 目標(biāo)語(yǔ)言a. 重點(diǎn)詞匯和短語(yǔ)clone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to, the media, in favour ofb. 重點(diǎn)句子It is a way of.The fact is that.The question that oc

2、curred .2. Ability goals能力目標(biāo)Enable the students to describe cloning: What is the advantages of cloning？ What is the problems or dangers of cloning？What is your opinion of cloning？3. Learning ability goals 學(xué)能目標(biāo)Help the students learn how to describe cloning.Teaching important points 教學(xué)重點(diǎn) How to descr

3、ibe cloning. Teaching difficult points 教學(xué)難點(diǎn)Help the students analyze the writing techniques of the article.Teaching methods 教學(xué)方法Skimming, task-based method and debate method.Teaching aids 教具準(zhǔn)備A recorder, a projector and some slides. Teaching procedures && ways教學(xué)過(guò)程與方式Step 1. Pre-reading. Ask

4、students to search for some information about this topic. Now show your questions on the screen, and then let them discuss with each other.1. What is a clone?2. How is a clone produced?3. What benefits can humans gain from cloning?4. What problems may arise when humans are cloned?Step 2. Choosi

5、ng the best answers  after reading the text. 1. Dolly the sheep _   A. looked exactly like the sheep that provides the egg.          B. 

6、;was the exactly copy of the sheep that provides the nucleus.    C. look like the sheep that gave birth to it.D. had the characteristics of all the th

7、ree sheep.2. How many female sheep are involved in the cloning? _A. Four.         B. Three.              C. Two.

8、60;          D. One.3. In the second paragraph, the word “straightforward” means _.A. uncomplicated    B. honest    C. frank   

9、60;  D. difficult4. Which of the following is not an advantage of cloning?A. Cloning can be used for medical purposes.B. Large quantities of food can be produced

10、0;by cloning.C. Famous persons who have passed away can be cloned.D. Cloning can help keep animals from becoming extinct.5. Which of the follow is NOT a problem or&#

11、160;danger of cloning mentioned in the text?A. Evil leaders may want to clone themselves.B. Animal clones may develop the illness of older animals and may die younger

12、0;than the donor animals.C. There are moral objections to cloning human beings.D. Too much cloning may lead to the destruction of the balance of nature.Step 3. Ticking “True” or

13、60;“false”.1. Cloning means making a copy of an animal or a plant.  (    )      2. Gardeners can make a lot of money by cloning plants. (  &

14、#160;  )3. Cloning animals is as complicated as cloning plants. (     )    4. Dolly the sheep was the first successful clone of a mammal.  (    )

15、5. Natural clones happen in animals as well as in plants.  (     )Step 4. DiscussionTask1. Read the text carefully and fill in the blanks.DefinitionCloning is a way of making _ of another animal and plant.Major uses of c

16、loning Gardeners use it to _ commercial quantities of plants. It is valuable for research on new plant species and for _ research on animals.Keys: an exact copy, produce, medicalAbout Dolly the sheep Encouraging news: Dolly seemed to develop _. Disturbing news: Dolly lived only six and a half years,

17、 half the length of the life of the _ sheep, because of serious illnesses which were more appropriate to a _.Task 2. Debating. Is cloning people a good thing or a bad thing?反對(duì)克隆人:1.克隆技術(shù)現(xiàn)在還不成熟, 克隆人可能有很多先天性生理缺陷。2.克隆人的身份難以認(rèn)定, 他們與被克隆者之間的關(guān)系無(wú)法納入現(xiàn)有的倫理體系。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

18、, 可能誘發(fā)新型疾病的廣泛傳播, 對(duì)人類的生存不利。支持克隆人: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)2. “當(dāng)然應(yīng)該克隆人, 如果誰(shuí)第一個(gè)掌握了這個(gè)技術(shù), 他就是我真正的、也是唯一的競(jìng)爭(zhēng)對(duì)手。” 比爾·蓋茨3. “克隆人絕對(duì)是科學(xué)上了不起的進(jìn)步, 克隆技術(shù)必將創(chuàng)造21世紀(jì)的輝煌?！?麻省理工學(xué)院教授 約翰 · 布洛克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Step 5. Translation1.

19、Cloning has always been with us and is here to stay.2.It happens in plants when gardeners take cuttings from growing plants to make new ones. It also happens in

20、 animals when twins identical in sex and appearance are produced from the same original egg.3.But at last the determination and patience of the scientists paid off i

21、n 1996 with a break through the cloning of Dolly the sheep.4.Then came the disturbing news that Dolly had become seriously ill. Cloning scientists were cast down to find&

22、#160;that Dollys illnesses were more appropriate to a much older animal.5.The questions that concerned all scientists were: “Would this be a major difficulty for the cloned

23、60;animals? ”6.On the other hand, Dollys appearance raised a storm of objections and had a great impact on the media and public imagination.7.It suddenly opened everybodys

24、0;eyes to the possibility of using cloning to cure serious illness and even to produce human beings.8.Governments became nervous and more conservative. Some began to reform

25、60;their legal systems and forbade research into human cloning, but other countries like China and the UK, continued to accumulate evidence of the abundant medical aid th

26、at cloning could provide.Step 6. Fill in the blanksCloning is a way of making an_ copy of another animal or plant. It can be used to clone plants and _. Cl

27、oning plants is _ while cloning animals is very _. However, the determination and patience of the scientists _ _with the birth of Dolly. But then came the _news that Dolly&#