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1、How much do you know about cloning?Unit 2 Cloning exact twin commercial straightforwardundertake breakthroughprocedure carrieradj. 精确的；准确的精确的；准确的n. 双胞胎之一双胞胎之一adj. 成对的；成对的； 成双的成双的adj. 商业的；贸易的商业的；贸易的adj. 简单的；坦率的简单的；坦率的vt. 着手；从事；承担着手；从事；承担n. 突破突破n. 程序；步骤；手续程序；步骤；手续n. 携带者；搬运工；携带者；搬运工； 运输工具运输工具Words prev
2、iew castaltogether arbitrary correction object objection mediumthe media obtain vt. 扔；投；掷扔；投；掷adv. 总共；完全地总共；完全地adj. 任意的任意的 n. 改正；纠正；改正；纠正； 修正修正vi. 反对；不赞成反对；不赞成n. 不赞成；反对；异议不赞成；反对；异议n. 媒介；手段；工具媒介；手段；工具 大众传播媒体大众传播媒体vt. 获得；赢得获得；赢得Words preview attainmoral conservative forbid accumulatevt. 获得；到达获得；到达adj.
3、 道德道德(上上)的；伦理的的；伦理的adj. 保守的；守旧的保守的；守旧的vt. 禁止；不准禁止；不准 vt. 积累；聚积积累；聚积Words previewpay off cast downin favour of 得到好结果；取得成功；得到好结果；取得成功；偿清偿清沮丧；不愉快沮丧；不愉快赞成；支持赞成；支持Expressions preview1. Cloning means making a copy of an animal or a plant. 2. Gardeners can make a lot of money by cloning plants. 3. Cloning
4、animals is as complicated as cloning plants. 4. Dolly the sheep was the first successful clone of a mammal. 5. Natural clones happen in animals as well as in plants.FTFScanningTTSkimming to get general ideas Whats the main idea of the text? A. Animal cloning is very valuable and can benefit the worl
5、d. B. It explains how cloning works in the first successful clone Dolly the sheep. C. It illustrates peoples views about Dollys appearance and cloning people. D. Both B&CSkimmingReading Comprehension IRead the passage quickly to find the main idea of each paragraph._Cloning has two major uses and su
6、ccessful clone._(definition) Cloning is a way of making an exact copy of another animal and plant _The effect of Dolly._Peoples reaction to cloning human beings._The problems of Dolly.21453ScanningScanning to get to get detail informationdetail information1. Dolly the sheep_.A. looked exactly like t
7、he 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 three sheep Reading Comprehension II2. The cloning of Dolly the sheep succeeded because_. A. its easier to clone a sheep than
8、 other animals 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. It can be inferred from the passage that a cloned animal_.A. usually lives as long as the original oneB. usually lives l
9、onger than the original oneC. usually dies earlier than the original oneD. is usually as healthy as the original one4. 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 by cloning.C. Cloning can help keep an
10、imals from becoming extinct.D. Famous persons who have passed away can be cloned.5. From the text, we can draw a conclusion that _ 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 develope
11、d because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future.6. Which of the following statements about cloning is NOT true according to text? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same ar
12、e originally from the same egg. C. Cloning is used by gardeners to make more money.D. Animal cloning is much more difficult than plant cloning.7. The sheep that donated the somatic cell most probably lived _ years. A. 3 B. 6.5 C. 9 D. 138. We can infer from the last three paragraphs that _.A. The no
13、rmal development of Dolly had no effect on the cloning of other species.B. Dollys serious disease and final death disturbed the whole world.C. Dolly successfully cloned a new lamb with the help of cloning scientists.D. There were arguments about animals about animal cloning and concerns about the fu
14、ture of cloning.9. In the second paragraph, the word “straightforward” means _. A. uncomplicated B. honest C. frank D. difficultA. Expositive （说明性的）（说明性的） B.Descriptive C. Argumentative （议论性的）（议论性的） D. Narrative11. The writers reaction towards cloning is_ A. Positive B. Negative C. neutralCloning is
15、 a way of making an exact copy of another animal and plant.What is cloning ?It happens both in _ and in_. They can be cloned by _ and _.plantsanimalsthemselveshumansNatural cloneMan-made clonePara 1 The definition of cloning1.How many major uses do cloning have? Firstly, commercial Secondly, researc
16、h2. When was the cloning of Dolly the sheep born?Para 21996The major uses and procedures of cloningProcedure of Cloning a Sheep克隆羊诞生图示克隆羊诞生图示At first, the fact that Dolly developed _ in a natural way was _.Later, the news _she lived for six years, half the length of the life of the _ one was _.Final
17、ly, the problem that occurred to the scientists was that a cloned animal lives_ the original one.Para 3The problems of Dollynormallyencouragingorginalthatas long as / shorter than / longer thandisturbingshorter thanThe word “controversial” in para 4 probably means _. A. complicated B. arguable C. im
18、portantPara 4The impact of DollyTrue or false:1 People feared that Cloned Hitlers would do harm to the world.2 All the research into human beings will be forbidden.3 Some countries will use cloning in a wise way.Para 5Peoples reaction to cloningMany governments forbade research into human cloning.sc
19、anningReading Comprehension IIIRead the passage again and answer 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 controversi
20、al in some countries?1 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 straigh
21、tforward, but the cloning 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 countr
22、ies for moral and religious reasons.Fill in the chart on Page 12 using the information from the text.From the two texts we can see that some people _ the human cloning while others_ it.are forare against Problems /dangers of cloningAdvantages of cloningAnimal clones may develop _of older animals.Med
23、ical cloning could produce _for serious degenerative illnesses in humans.Animal clones may die _than the donor animals.Cloning plants can produce plants of similar _for sale._may want to clone themselves.Cloning plants can be useful for research on _plant species.There are _objections to cloning hum
24、an beings.Cloning can help save _animals.Fill in the chart using the information from the text.the illnesses youngerEvil leaders moralcuresendangerednewquality the author does not state any personal opinion about cloning. A. Objective B. Negative C. Positive The writers attitude towards cloningThe w
25、riter is _ because _objectiveConsolidation Clone is a way of making an exact_ of another animal or plant. Cloning has two _ uses. Firstly, gardeners use it all the time to produce _quantities. Secondly, it is valuable for research on new plant _and for medical research on animals. But through the _a
26、nd death of Dolly, cloning has a lot of problems. On the other hand, we know cloning is controversial in some countries for _and _reasons. copymajorcommercialspeciesbirthmoralreligiousQuestions:1. Do you support the idea of producing human embryos(胚胎)for medical purposes?Why?2. Do you think it a goo
27、d idea to use cloned humans for organ(器官)transplants? Why?3. Do you think a cloned human should have human rights? Why?4. Do you think cloned humans will have the same talents as the original ones? Why? Discussion Should human cloning be allowed?Human cloning should be allowed!1. We can have more la
28、bors to do farming and other works, so we can reduce the use of machines so as to reduce pollution.2. Use the talents of great person3. To do medical research to cure illness, to use cloned humans for organ transplants so as to save peoples life.4. To service people as labors. 5. Parents who are una
29、ble to bear their own children can have cloned children.6. When someone pass away, his friends and relatives may morn for him. If we have him cloned, they will not feel sad.7. Clone ourselves to accompany our parents.8. When feel lonely, make friends with cloned people9. Human cloning should be allo
30、wed!1. Too much population;2. Lack of food and other resources;3. Lack of space to live in;4. Illegal use of cloning may bring disasters to the world;5. Cloning of awful things;Human cloning shouldnt be allowed!6. Political and human rights of cloned people;7. Hard to identify the donors and the cloned ones;8. The health and the life expectancy of the cloned people; 9. ect.Human cloning shouldnt be allowed!Homework1.Read the passage again and find out all the noun clauses in the text.2.Write a short passage according to the following topic. Should human cloning be allowed?