Jurassic Park is a theme park which is populated with ________ dinosaurs. The popularity of this film proves how interested people are in the subject---- _________. cloned cloning
How much do you know about cloning?
Which one is the first cloned animal? • A. B. sheep tadpole D. C. cat dog
2. Which one is the first cloned mammal? A. B. wolf sheep D. C. pig monkey
3. When was Dolly the sheep born? • 1994 • 1995 • 1996 • 1997
Dolly the sheep Dolly is a m_____ ______clone. She is an exact c____ of the sheep that provided her genetic(遗传的) information. an- made opy
4. Which of the following is not man-made clone? A. B. D. C.
They are human twins, who are identical(同样的) in sex and appearance and are good examples of ________clones. natural
5. Can you give us a simple definition of cloning? Cloning is a way of making an exact ______ of another animal or plant. The clone has the _____ DNA to the “parent”. copy same
Reading Cloning: Where is it leading us?
Task 1: Read the passage in a few minutes and then decide whether the following statements are true or false.
1. Cloning is something that has been developed quite recently. 2. Cloning happens in both plants and animals. 3. Cloning animals is as complicated as cloning plants. 4. The lamb is the clone of the sheep C. 5. The successful cloning of Dolly the sheep encouraged the scientists. 6. Dolly the sheeplived longer than the original sheep. 7. People feared that cloned Hitler would do harm to the world. 8. All the research into human beings will be forbidden.
Cloning is something that has been • developed quite recently. • 2. Cloning happens in both plants and • animals. • 3. Cloning animals is as complicated • as cloning plants. F T F
4. The lamb is the clone of the sheep C. 5. The successful cloning of Dolly the sheep encouraged the scientists. 6. Dolly the sheeplived longer than the original sheep 7. People feared that cloned Hitler would do harm to the world. 8. All the research into human beings will be forbidden. F T F T F
Task 2: Find out the main idea of each paragraph.
The main idea of each paragraph. • What is cloning. • 2. Cloning has two major uses. • 3. The problems of Dolly. • 4. The attitudes/reaction to cloning.
Task 3: Find out the answers to the questions in it in groups of four.
◆What are the encouraging news and disturbing ones about Dolly the sheep? ◆How is Dolly the sheep is produced?
◆Give us two examples of natural cloning ? ◆ What do you think is the writer’s opinion in the passage? Why do you think so?
◆Why is cloning • controversial? • ◆What are the advantages • of cloning?
◆What are the major two uses of cloning? ◆What are the problems or dangers of cloning?
◆What are the encouraging news and disturbing ones about Dolly the sheep? ◆How is Dolly the sheep is produced? ◆Give us two examples of natural cloning ? ◆ What do you think is the writer’s opinion in the passage? Why do you think so? • ◆Why is cloning • controversial? • ◆What are the • advantages of cloning? ◆What are the major two uses? ◆What are the problems or dangers of cloning?
◆What are the encouraging news and disturbing ones about Dolly the sheep? The encouraging news is that Dolly the sheep seemed to developed normally and the disturbing news is that Dolly the sheep had illnesses that were more appropriate to a much older animal.
◆How is Dolly the sheep produced? Dolly the sheep was born. an egg cell remove the nucleus put the embryo into sheep C a somatic cell join them using electricity take out the nucleus divide and grow into an embryo
◆Give us two examples of natural cloning . 1) Gardeners taking cuttings from growing plants to make new ones. 2)Twins identical in sex and appearance are produced from the original egg.
What do you think is the writer’s opinion in this passage? Why do you think so? I think the writer is ____________________ because ______________________________ _____________________________________. impartial/neutral he /she does not state any personal opinion about cloning
◆Why is cloning controversial? • Because cloning will lead to moral problems.
◆What are the advantages of cloning? Medical cloning could produce cures for serious illnesses in humans. Cloning plants can produce plants of similar quality for sale. Cloning plants can be useful for research on new plant species.
◆What are the major two uses of cloning? First, gardeners using cloning to produce commercial quantities of plants. Second, it is valuable for research on new plants species and for medical research on animals.
◆What are the problems or dangers of cloning? Animal clones may develop the illnesses of older animals. Animal clones may die younger than the donor animals. Evil leaders may want to clone themselves. Cloning human beings will lead to moral problems.
Discussion: What is your opinion of cloning? Give some reasons.
What’s your opinion of cloning? Give reasons. I approve of cloning, because… I give my approval to cloning, because… I declare for cloning, because… I declare against cloning, because… I am opposed to cloning, because… I disapprove of cloning, because… I express my disapproval of cloning, because…
Now, if you are given a chance to clone anything that you like, what would you like to clone? Why?
_________(clone) is a way of making an exact copy of another animal or plant. Gardeners use it all the time to produce __________(commerce) quantities of plants, ______ scientists think it valuable for research on new plant species and for medical research on animals _______ the procedure is difficult ____________ (undertake). However, the ______________(determine) and patience of scientists ____________(reward) in 1996 with a breakthrough--- the cloning of Dolly the sheep. The fact ______ Dolly lived six and a half years, half the length of the life cast down the cloning scientists, who will wonder _________ cloning will help or harm mankind when the moral questions _________(raise). Cloning commercial and though to undertake determination was rewarded that whether/if are raised
Warming up differ • Think about how they _______ (be different). • differ (vi.): be different; disagree with • 常见的搭配有： • sb differ from/ with sb on/ about sth • 在……问题上与某人意见不同 • A and B differ in …A与B在……方面不同 • A differs from BA与B不同
differ from • 她的方法跟我的没有很大不同。 • Her method doesn’t ______ much ______ mine. • 现代飞机跟早期的在很多方面有所不同。 • Modern airplanes _______________ early ones. • 对于如何解决问题, 我跟他的意见不一致。 • I ___________ him _______ how to solve the problem. • 关于道德标准, 他们的见解不同。 • They ____________________________ moral standards. differ from on differ with differ with each other on
from/with on/about in 用介词填空。 • (1) We differ _________ him _________ that question. • (2) The two nations differ ______ culture • and religion. • (3) The climate here differ ___________ • that of the South. • difference (n.)差异, 差别, 分歧, 争论, 差额 • tell the difference between A and B区分A与B • make a/no/some difference (to sb/sth) • 对（某人、物）有/没有/有些作用或影响 • different (adj.) 不同的 • be different from from
Cloning has always been with us and __________________(持续下去). is here to stay be here to stay: be permanent and generally accepted (文语)(流行等)扎根,普及,留存下去,被普遍接受 ▲ High gas prices could be here to stay. ▲Is bird flu here to stay? ▲ I hope that equality of opportunity for men and women is here to stay.
It is a way of making an exact copy of another animal and plant. 克隆是一种用来生产与原型完全相同的动植物的方法。 exact adj.精确的, 准确的, 原样的, 精密的 Nobody present could give the exactfigures of increase in production. 在场的人没有人能说出生产增长的准确数字来。 _______________ of the event has escaped me. 我记不起这起事件的确切日期了。 The exact date It happened ________ as expected. 果如所料 exactly
The train arrived at exactly 8 o'clock. 火车八点整到达。 • It also happens in animals when twins _________ (the same) in sex and appearance are … • identical (adj.):一模一样的, 同一的 • These two designs ___________________(几乎一样的). identical are almost identical • My opinion is identical with/to his. the same as
Gardeners use it(=cloning) all the time to produce _______________________________(大量的商用植物). ▲commercial: adj.商业的 n.(广播,电视的)广告 a commercial artist a commercial television / Commercial Radio HK a commercial college The TV show was interrupted by too many commercials. 那档电视节目插进的商业广告太多了,不断被打断。 commercialquantities of plants 迎合大众的艺术家 商业电视台 / 香港商业电台 商学院
Cloning plants is ______________(easy, simple) while cloning animals is more complicated. straightforward complicated straightforwardadj.简单的, 易懂的，坦诚的, 坦率的 honest and straightforward straightforward and outspoken simple and straightforwardwriting At least he was quite straightforward about it, you can’t say he was trying to deceive you. 他起码在那件事上是相当坦率的，你不能说他试图欺骗你。 憨直 心直口快 文笔简朴
It is a difficult task to undertake. undertake (v.) --- to make yourself responsible for sth and start doing sth 承担，从事，负责 (undertook, undertaken) He undertook the difficult task willingly. 他欣然承担那项困难的工作。 undertake a new experiment 着手新的实验 1) The lawyer___________________. 那个律师接了一个新的案子。 3) He ________________________. (承担一项新任务) undertook a new case undertook a new task
Weundertakethat we will do what we can to contribute to the renewal of our world. (=promise) 我们承诺我们将尽我们所能去更新我们的世界。 The determination and patience of the scientists paid off in 1996 with a breakthrough----the cloning of Dolly the sheep. pay off: to be successful and bring good results 成功，奏效，达到目的 约翰在考试前努力学习, 这没有白费(得到回报), 他得了个A。 John studied hard before the examination, and, __________. He made an A. it paid off
pay sth off : 付清，偿清 我付清了银行贷款了。 I paid off my loan from the bank. How much did you __________ the book? （付款） It’s time he ______ me ______ the $100 he owes me.（偿还） Perhaps I shall ________________ England this winter.（访问） You should ________________ your health. （注意） pay for paid back pay a visit to pay attention to
breakthrough(n.): an important development that may lead to an agreement or achievement 重大进展，突破 a significant breakthrough in negotiations 谈判中的重大突破 取得突破性进展 __________ a breakthrough achieve Scientists think they are beginning to ____________ in the fight against cancer. 科学家们认为他们在对抗癌症的研究中开始有突破。 break through