英语知识学习Cloning-where-is-it-leading-us

1、2021/3/2312021/3/232 In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-made. Think about how they differ.2021/3/233Dolly the sheepIts the most famous sheep in the world. Do you know how Dolly is different from other sheep?She was cloned while the other

2、s were born naturally. It is the copy of another sheep.2021/3/234What can you see in the picture?I can see a strawberry plant producing runners in a natural form of cloning.2021/3/235Who cut the stem off the plant?A gardener. And the gardener is going to put it into a pot to produce another plant. H

3、e is actually making a copy of the plant.2021/3/236What do you know about twins?There are twins of the same sex and those of different sexes. The twins here are identical in sex and appearance and are good examples of natural clones. They carry the same genetic information. The fertilized egg has sp

4、lit into two while inside the mother, and so produced two identical human babies.2021/3/237Are the following clones the same? If not, what is the difference?NO. They are man-made clones,2021/3/238They are natural clones.2021/3/239Pre-readingQuestions about cloning:1. What is a clone?A clone is an an

5、imal or plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.2021/3/23102. How is a clone produced?The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its ow

6、n runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.2021/3/23113. What benefits can humans gain from cloning?1) Medical cloning can help cure serious illnesses that ruin ones quality of life (such as Park

7、insons disease帕金森症帕金森症 or Alzheimers disease老年痴呆症老年痴呆症).2) It can help infertile people have babies.2021/3/23124. What problems may arise when humans are cloned?1) People may want to clone themselves so they can live forever.2) People may want to clone dead children.3) People may want to clone their

8、 favorite pets.2021/3/2313Comprehending2021/3/2314I. Find the main idea of each part.DefinitionPara 1. Para 2. Para 3-5. Major uses of cloningConcern for the progress of Dolly the sheep reaction/response to the first successful animal clone and concern for the future of cloning2021/3/23151). The mai

9、n idea of the text is_ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its

10、 future.III. Choose the best answer.2021/3/2316II. Read the text carefully and fill in the blanks.DefinitionCloning is a _of making _ of donor animal and plant.Major uses of cloning to produce _of plants. valuable for research on new _ and for _ on animals.an exact copymedical researchcommercialplan

11、t specieswayquantities2021/3/2317Encouraged disturbed _concerned Dolly seemed to develop _. Dolly became seriously ill. Dolly developed an illness more _to an older animal Dolly lived only half the_ of the _sheep and the same _fate affected other _. lengthoriginalspeciesConcern for the progress of D

12、olly the sheepappropriatenormallyCast downarbitrary2021/3/2318 Dollys appearance _and _the media and public imagination. It became _.It suddenly opened everybodys eyes to _using cloning to _serious illness and even to produce human beings.raised a storm of objections the possibility of had a great i

13、mpact on curecontroversialReaction/Response to the success of Dolly the sheep2021/3/2319_or harmful?remaining_ _leaders hoped to clone themselves to _their ambitions. Religious leaders raised _ questions, so governments became nervous and more_. Some began to _their legal systems and _ research into

14、 human cloning ,but other countries like China and the UK, continued to _ of the_ that cloning could provide.forbadeaccumulate evidenceEvilattainmoralabundant medical aidreformconservativeunknownBeneficial2021/3/2320细枝末节细枝末节1. _ is used in the procedure for cloning Dolly the sheep.A. The nucleus of

15、Sheep A B. The somatic cell of Sheep A C. The nucleus of Sheep B D. The embryo of Sheep C 2021/3/23212). The lamb is the clone of the donated cell from Sheep B because_. A. it provides the egg cell B. it gives birth to the lamb C. it provides the nucleus D. it is a carrier of the clone2021/3/23223).

16、 Dolly the sheepA. looked exactly like the sheep that provides the eggB. 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 three sheep2021/3/23234). The sheep that donated the somatic cell most probably lived _ ye

17、ars. A. 3 B. 6 C. 12 D. 13推理判断推理判断2021/3/23245). Which of the follow is NOT a problem or 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 than the donor animals.C. There are moral object

18、ions to cloning human beings.D. Too much cloning may lead to the destruction of the balance of nature.2021/3/232510). Which of the following is Not an advantage of cloning?A. Cloning can be used for medical purposes B. such as medical research and medical aid, eg: cloning human organsC.B. Farmers ca

19、n take advantage of cloning to develop new plant species and produce more crops for profits.D.C. Famous persons who have passed awayE. can be cloned.F.D. Cloning can help keep animals from G. becoming extinct.2021/3/2326The writers reaction towards cloning is_A. Positive B. Negative C. neutral/impar

20、tialA. Expositive (说明性的说明性的) B. Descriptive C. Argumentative (议论性的议论性的) D. Narrative2021/3/232712). From the last paragraph we can infer that _. A. cloning will come to an end because of the objections B. cloned human beings will be produced in the near future C. many countries will use cloning in a

21、 wise way D. all the research into human beings will be forbiddenC2021/3/23287). Which of the following is wrong?A. Cloned people would live forever.B. Cloned people may be killed at will for medical aid.C. A woman would have difficulty recognizing her real husband.D. Men will die out because a woma

22、n can give birth to a baby without a husband.2021/3/232913. What is peoples fear about human cloning? Which of the following is wrong?A. Cloned Hitlers would do harm to the world.B. Cloned people may be killed at will for medical aid.C. A woman would have difficulty recognizing her real husband.D. M

23、en will die out because a woman can give birth to a baby without a husband.2021/3/233014. What can we know from the text?A. Twins are the result of natural clones.B. Cloning will benefit all of us. C. It is more difficult to make animal clones than commercial plant clones.D. Dolly the sheep was the

24、first cloned animal in the world. C2021/3/23311). Cloning means making a copy of an animal or a plant. 2). Gardeners can make a lot of money by cloning plants. 3). Cloning animals is as complicated as cloning plants. FTF4. Write the letter “T”if the statement is true. Write “F”if it is false.2021/3/

25、2332TT4). Dolly the sheep was the first successful clone of a mammal. 5). Natural clones happen in animals as well as in plants.2021/3/2333Look at these pictures, and discuss this question with your partner.Is cloning people a good thing or a bad thing?2021/3/23342021/3/23352021/3/23362021/3/23371.克

26、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理隆人可能有很多先天性生理缺陷。缺陷。2.克隆人的身份难以认定克隆人的身份难以认定,他他们与被克隆者之间的关系无们与被克隆者之间的关系无法纳入现有的伦理体系。法纳入现有的伦理体系。反对克隆人反对克隆人2021/3/23383. 克隆技术有可能被滥用克隆技术有可能被滥用, ,成为恐怖分成为恐怖分子的工具。子的工具。4. 从生物多样性上来说从生物多样性上来说, ,大量基因结构大量基因结构完全相同的克隆人完全相同的克隆人, ,可能诱发新型疾可能诱发新型疾病的广泛传播病的广泛传播, ,对人类的生存不利。对人类的生存不利。2021/3/2

27、3391. “不让我们克隆人不让我们克隆人,就是不让就是不让我们修正我们的错误我们修正我们的错误,人类人类 历 史 难 道 能 够 这 样 构 造历 史 难 道 能 够 这 样 构 造吗吗?”纽约时报书评纽约时报书评2. “当然应该当然应该克隆克隆人人,如果如果谁第一个掌握了这个技术谁第一个掌握了这个技术,他就是我真正的、也是唯一他就是我真正的、也是唯一的竞争对手。的竞争对手。”比尔比尔盖盖茨茨支持克隆支持克隆人人2021/3/23403. “克隆人绝对是科学上了不起的进步克隆人绝对是科学上了不起的进步,克隆技术必将创造克隆技术必将创造21世纪的辉世纪的辉煌。煌。” 麻省理工学院生命工程教授麻

28、省理工学院生命工程教授约翰约翰布洛克布洛克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。2021/3/2341Discussion1. What do you think is the writers view in this reading passage?2. Whats your opinion of cloning? Give reasons.I think the writer is impartial because he /she does not state any personal opinion about cloning.2021/3/2342Do you know about: the procedure works of a sheep? 2021/3/23432021/3/2344克隆羊诞生图示克隆羊诞生图示2021/3/2345 “多利多利”的诞生标志着克隆研究取的诞生标