山东省英语高中人教版学案 选修八：Unit2 Cloning Reading2 知识点

【学习目标】1. 使用适当的阅读方法与技能, 把握课文内容并获取信息，处理信息。

2. 了解有关克隆的知识和意义，以便解决医学上的难题，更好地为人类服务。

【学习重点，难点】帮助学生了解有关克隆的知识和意义，以便解决医学上的难题，更好地为人类服务。

【课型】新授课【回顾预习】1、Read the new words for three times and go through the text.2、Prepare the class report: What do you know about cloning?【新知识学习】Step 1. Class Report:Step 2. Self-learning（自主学习)Warming up: How much do you know about cloning? Decide “true” or “False”:1. Cloning means making an exact copy of another animal or a plant. ( )2. Gardeners can make a lot of money by cloning plants. ( )3. Cloning 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. ( )Skimming:1. What is the writing style?A. Expositive （说明性的）B. DescriptiveC. Argumentative（议论性的）D. Narrative(叙事)2. The main 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 forbiddenC. animal cloning is well developed because Dolly the sheep was born.D. animal cloning raised arguments and scientists are not sure about its future. Detailed reading:Paragraph 1:What is the main idea of this paragraph?Cloning isParagraph 2 :1. What is the topic sentence of this paragraph?_____________________________________________________________2. What is the meaning of the word straightforward?________________________________________________________________3. When was the cloning of Dolly the sheep born?________________________________________________________________4. The cloning of Dolly the sheep succeeded because __________A. it’s easier to clone a sheep than other animalsB. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failedParagraph 3:1. What does the paragraph mainly want to tell us? The _________ of Dolly. 学习指导明确学习目标自我检测答案尽量简洁注意答案组织我展示我精彩2. It can be inferred from the passage that a cloned animal_____ually lives as long as the original oneually lives longer than the original oneually lives shorter than the original oneD.is usually as healthy as the original oneParagraph 4:1. The sheep that donated the somatic cell most probably lived ____ years.A. 3B. 6C. 9D. 122. The word “controversial” in para 4 probably means ____________.A. complicatedB. arguableC. importantParagraph 5:Different responses to human cloning1. ____________were dying to attain their ambitions.2. _________________were anxious it may bring about moral questions.3. ______________were nervous and conservative.4. ______________can’t decide whether it is beneficial to us.From this paragraph we can see that some people _____________ the human cloning while others______________ it.Step 3.Discussion and presentation小组讨论自主学习中的问题，并进行展示和点评,点评过程中要注意补充和质疑。

人教版高三英语选修8教案：《Unit2Cloning》书本上的知识而外，尚须从生活的人生中获得知识。

下面小编为您推荐人教版高三英语选修8教案：《Unit 2 Cloning》。

目标一、语言知识目标初步理解、掌握课文中关于克隆的词汇，学习分析课文中的长难句子。

二、阅读技能目标1. 能获取和处理文章中的主要信息。

2. 能够掌握文中出现的重要的语言知识三、学习策略目标掌握速读、略读、猜测词义等阅读策略。

四、情感态度目标让学生认识到克隆的利和弊。

五、文化意识目标了解克隆，正确地利用克隆技术来为人类服务。

重难点初步理解、掌握课文中关于克隆的词汇，学习分析课文中的长难句子。

教学过程Step 1 Daily reportOne student comes to the front and gives a report about advantages and disadvantages of science and technology.Step 2 leading-inThe teacher shows some pictures and starts a discussion about cloning.Step 3 SkimmingTask 1: What’s the main idea of the passage?Task 2: Match the main idea with each paragraphPara 1: A. People’s attitude towards cloning.Para 2: B. The problems of Dolly.Para 3: C. The impact of Dolly.Para 4: D. Two major uses and the procedure of cloning.Para 5: E. The definition（定义）of cloning.Step 4 ScanningTask 1. Look through Para 2 and answer the following questions.（1）What are the two major uses of cloning?（2）Which one is easier，to make plant clones or animal clones?Task 2. Look through Para 3 and fill in the chart.Task 3. Do the following translation and word guessing.（1）. Translation:On the other hand，Dolly’s appearance raised a storm of objections and had a great impact on the media and public imagination.（2）. The word “controversial” in paragr aph 4 probably means_________.A. complicatedB. arguableC. importantD. valuableTask4. Do the following Tor F questions based on Paragraph 5.1. People feared some evil leaders might use cloning to reach their goal.2. All the research into cloning will be forbidden.3. Religious leaders are in favor of human cloning.Step 5 Enjoy beautiful sentences1. Cloning plants is straightforward while cloning animals is very complicated.2. At last the determination and patience of the scientists paid off.3. The fact that she seemed to develop normally was very encouraging.Step 6 Question and answerThis part is for students to find if they still have questions. If there is any，they can ask their classmates to help them.Step 7 QuizNote: This part is very challenging. In the picture there are five numbers. Students can choose their lucky number and answer questions. Most of the questions are based on what they have learned in class.Step 8. Test yourselfFill in the blank with proper words.Cloning is a way of _______ （make）an exact copy of another animal or plant. It has two major uses. One is _______ gardeners use it to produce plants. The ______ is that it is valuable for medical research on animals. ________，the process of cloning is difficult ___________ （undertake）.The first successful clone，Dolly the sheep，made the whole _________ （science）world follow its progress，though it had ________ problems than the normal sheep. On the other hand，Dolly’s appearance _______ （raise）a storm of objections and had a great impact ______ the media and public imagination. Different people have different opinions on it. However，scientists still wonder ______ cloning will help or harm us and where it is leading us.Step 9 DebateTopic: Are you for or against cloning?课后小结HomeworkWrite a passage entitled My view on cloning.课后习题评测练习主要有两个。

Unit 2 CloningThe Third Period SpeakingTeaching goals1. Target languagea. 重点词汇和短语theme，fighting，conflict，argument，destruction，in one’s opinionb. 交际用语Expressing and supporting an opinionI would never accept...I’m not bothered about...I don’t mind but...I hope you’ll carry on...Are you sure you want to...?I agree with you that...Do you think it is wise to...?I think you should...Well done to you for...I can’t help thinking...I could never agree to...2. Ability goalsEnable the students to express their opinions about cloning using some useful expressions.3. Learning ability goalsHelp the students learn how to express their opinions.Teaching important pointsLearn to use the structures of expressing and supporting an opinion.Teaching difficult pointsHow to give a speech.Teaching methodsCooperative learning.Teaching aidsA computer & a projector.Teaching procedures & waysStep Ⅰ Lead-inT: Good morning / afternoon, boys and girls!Ss: Morning Mr...T: Last class we have talked about clone, we all know it is not a dream. Now everyone, if I give you a chance to clone what will you restore then?S: Edison, dinosaurs, Japanese wolf, Einstein.T: Do you want to clone Hitler?S: No. Hitler is a dangerous person.T: If some terrorists master this clone method, they may bring disasters. All your choices are excellent. Today we will learn another passage about cloning, from which we will know whether we can bring dinosaurs back to life.Ask the students to go through some facts of cloning.T: From these facts we know human beings have achieved great progress in cloning. Now read the text carefully to get the answers for these questions: what animals have people cloned?S: Frogs, mice, cows, sheep, bisons, cats, and dogs.T: Good job. Answer the question: What are the common characteristics of these animals?Ss: They are nowadays animals.T: Yeah, I think you must have seen the film Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs. Can we really clone dinosaurs now?Let the students turn to page 15 and then read the text quickly. Several minutes later. S: We cannot clone dinosaurs, because it’s difficult for us to get its DNA.T: Good job. It’s only a dream. Dinosaurs disappeared 65,000,000 year s ago. So the chance of dinosaurs ever returning to the earth is merely a dream.Step Ⅱ Read and answer (P16)To answer these three questions, teacher can give the students some examples as explanation, for example, Question 1.T: Now think about this question: if in the world there is only one sheep and human beings want to clone more. Some days later a Dolly appears, then many more. But one day all sheep get the same deadly disease. Now please think about what the results are. S: Maybe they would all die.T: Why?S: Because all sheep have the same arrangement of genes.T: Right. Now ca n you answer Question 1? Why shouldn’t you clone an extinct animal unless there is enough diversity in the group?S: It is useless to clone an animal if there is not enough diversity in the group for it to overcome illnesses.T: Why is it wrong to clone an extinct animal if it would have to live in a zoo?S: If the cloned animals have to live in the zoo, it is unfair to them. They need freedom.T. Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years?S: Dinosaurs disappeared 65,000,000 yeas ago. So the chance of dinosaurs returning to the earth is merely a dream.Step Ⅲ Discussion (Question 2)This is a speaking task. Ask the students to have a discussion in groups, organize theirwords properly, and give vivid description of the chosen animals.T: Now look at the table on page 16, discuss in pairs which extinct animals described are worth restoring by means of cloning. Choose one animal and use the information to help you argue why this animal should be restored to the earth.Give the students six minutes to discuss.S1: I think Great Auk is a wonder. Because it is a very large bird that cannot fly. The useful thing about it is that its feather doesn’t absorb water. I think if we wear clothes made of its feather, we will not worry about rain.S2: I agree with you. But I am happy to accept Dodo bird because it is friendly and not harmful. I like gentle animals. It can also lay large eggs and its meat is tasty, but I don’t think I will eat its meat.…T: From your answers I think these animals are all useful and they all should be restored to the earth. At the same time, we should try our best to protect them. Do you agree with me?S: Yes.Step Ⅳ Writing a report (P17)Deal with Questions three and four. Divide the whole class into four groups. Then they can have a competition.T: Now everyone, imagine all of you are owners of your chosen animal. Now work together, and give us a vivid description of your pet, then I will decide which one is the best to be resorted to the earth.Several minutes later, the students give performances. At the same time, list some major points on the blackboard.T: Well done everyone. It is really hard for me to choose, let us vote OK?Step Ⅴ TALKING (P55)Ask the students to talk about the questions with the teacher’s help.T: Look at the questions on page 54. Do you know how to show your opinion? You can discuss the following questions with your partner and use these expressions on page 54.1. How would you feel about having a clone of yourself in the family?2. What problems did you have growing up and how can you help him / her avoid them.HomeworkT: Write down your feelings and attitudes towards clone. Combine them into a composition.Sample version 1:In my opinion it is wrong to clone human beings. If my parents decide to have a clone made of me, I will feel very sad and I will never accept the clone as a member of my family or as my friend because I think it is unfair to natural things.We are all sons of nature, birth or death is a natural thing. The day we born, itdestined we are independent. Nobody has the right to change ourselves. If one day I were to be cloned to another person, he would kill me, because I lost some original characters. I hope we should respect human beings, and not change any original things.Sample version 2:I think the cloning represents the progress of the mankind. But it still has many problems to work out, the law, the ethic and especially the goals and purposes for cloning. However, we are actually doing much of this research for the improvement of life for humans. We should get benefit from cloning.In China, the government has put out written policy on human cloning. It has officially banned research on human cloning for reproduction purposes, but allows cloning on embryonic stem cells and remedial cloning. As we all known, everything can’t be perfect. We should treat the cloning with correct attitudes. We should know the advantages and disadvantages of cloning.。

Unit 2 CloningPeriod 2 ReadingTeaching aims:Enable the students to describe cloning:What is the advantages of cloning？What is the problems or dangers of cloning？What is their opinion of cloning？Teaching important and difficult points:Learn What the advantages of cloning are, what the problems or dangers of cloning are, what their opinion of cloning is？Teaching methods:Fast and careful reading, asking, answering.Teaching aids:A blackboard and a computerTeaching procedures:Step 1 Fast reading: What’s the text mainly about?It’s mainly about cloning arguments about animal cloning and concerns about its future.Step 2 Read again and find the main ideas of the five paragraphs. Read through the passage and get the main idea.•Para 1:What’s cloning? ( It is a way of making an exact copy of another animal and plant)•Para 2:Cloning has two major uses.•Para 3:The problems of Dolly.•Para 4:The effect of Dolly.•Para 5:It is forbidden to clone human being.Step3 Read again and answer these questions1. 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 controversial in some countries?Step 4 Fill in the chart using the information from the text.Step5. Show the students how to clone a sheep with a picture.Step6.What do you think is the writer’s point of view in this reading passage? Is it in favour of cloning or against it?I think the writer is______________because___________________________________________________ Step 7 Homework1. Finish “Learning about language” Discovering useful words and expressions on page 13.2. Underline the sentences yo u don’t understand.品味人生1、不管鸟的翅膀多么完美，如果不凭借空气，鸟就永远飞不到高空。

Unit 2 CloningThe Second Period ListeningTeaching goals1. Target languagea. 词汇和短语cloning, attitude, medicine, organsb. 重点句子I agree with...How would you do...?Do you think...?2. Ability goalsLet the students focus on the different attitude towards cloning technology.3. Learning ability goalsTeach the students how to get the specific information.Teaching important pointsListen to the materials about cloning and choose the correct answers.Teaching difficult pointsWork together with partners and show their own opinions.Teaching methodsListening and cooperative learning.Teaching aidsA tape recorder.Teaching procedures & waysStep I Revision1. Greetings2. RevisionStep Ⅱ Pre-listeningWork in groups to discuss how we should behave towards the human clones.T: Before human clones become part of our life, perhaps we should spend some time thinking about how we should behave towards them. Now, work in groups to discuss the following questions.Show the following.1. How would you treat human clones?2. Do you think they should have legal and political rights, such as getting married or voting?3. Do you think they are separate people or part of the original donor?Sample answers:1. I will treat them as normal people.2. Yes, I think they should have the legal and political rights.3. I think they are separate people.Step Ⅲ ListeningThe students are asked to read fast the questions and multiple answers to find out the listening points first, and then listen to the tape twice to choose the best answer.T: Please open your books at page 54. Before you listen to the tape, please read fast the questions and multiple answers to find out the listening points. Pay more attention to these important points while listening. While listening, you’d better make notes of the listening points.A few minutes later.T: Now, I’ll play the ta pe twice. Please listen carefully and pay more attention to the important points. You may make notes while listening. Notes taking are helpful for you to remember each of the important points. After listening twice, check the answers and explain some difficult listening points if necessary.Step Ⅳ Listening task (P57) (时间不足时改为作业)First, ask the students to read these sentences and then listen to the tape and decide if they are facts or opinions.T: Now turn to page 57, there’re 10 questions. You should for m the habit of going through the questions and the answers to get the important listening points. Yes? And make notes if necessary. OK?Play the recording and then check the answers with the class.Sample answers:Arguments for cloning pets:1. Favorite pets can live forever as clones.2. It is moral to clone pets for their owners.Arguments against cloning pets:1. Many people don’t agree with cloning.2. Some people think that cloning pets is selfish.HomeworkT: Boys and girls, today we have listened to some materials about cloning. I do hope you can listen to the materials again after class so that you can get very familiar with them. Besides, please preview the reading. Now class is over. Goodbye, everyone. Ss: Goodbye, sir / madam.。

人教版高中英语选修8Unit2《Cloning》word教案【美文阅读】Pandas can be saved by cloning?从1998年中国科学院动物研究所首席科学家、动物克隆与受精生物学学科带头人陈大元首次正式提出克隆大熊猫到现在，整整16年过去了，陈老仍旧执著于此。

然而爱护大熊猫，怎么说要不要通过克隆的方式呢？China has been exploring every possible means of saving giant pandas，one of the world's most endangered species，from becoming extinct，even if it means resorting to(诉诸) cloning them.Chen Dayuan，a senior scientist who specializes in cloning at the Institute of Zoology in the Chinese Academy of Sciences，introduced the idea of performing cloning techniques on giant pandas in 1998.Using initial funding of 100,000 yuan，Chen successfully produced blastocysts(胚泡) by transplanting the somatic nucleus from sample pandas into the egg cells of rabbits.The move was considered as one of the 10 biggest achievements of science and technology in 1999.It won an award of 6 million yuan and further funding of 5 million yuan for the project from the Ministry of Science and Technology.At first，two embryos were created from a surrogate mother(代母) cat who became pregnant after being in­jected with a blastocyst，but the experiment was abandoned after the cat died.Chen and his team then experimented with surrogacy on black bears.After three years of effort，a black bear became pregnant and the shape of a fetus(胎儿) could be seen on an ultrasound scan(超声波扫描检查)．However，the research was stopped in 2005 because the fetus did not completely develop before the project's deadline.“Those who are against cloning have made their voice s heard throughout the research project on cloning giant pandas.Some people believe cloning goes against nature，but it is actually a pioneering technology.If successful，it is a way tosave endangered animals，”Chen said.Some scientists take a different vie w.“While I agree that research on cloning is meaningful，it is inappropriate to use giant pandas in this type of experiment.The number of pandas is limited and human beings have yet to master knowledge about pandas' pregnancy.Cloning would do little to save the species，”said Wang Dajun，a researcher at the School of Life Sciences，Peking University.In response，Chen said that he would continue his research.【诱思导学】1．Do you think pandas can be saved by cloning？Why?______________________________________________【答案】省略2．Why are some scientists against cloning pandas?______________________________________________【答案】Because they think cloning go against nature.Period ⅠPreviewing(教师用书独具)●教学目标本课时要紧是通过学生对学案所给出的内容的学习，了解本课文中所显现的词汇，初步了解课文以及相关的背景知识，为下一堂课对课文的全面明白得起到一个铺垫作用。

Unit 2 CloningThe First Period warming upAims1. Talk about cloning2. Practice expressing and supporting an opinionContentsTask one: Looking and speakingIn pairs, look at the pictures and discuss which ones are natural clones and which ones are man-made. Explain how they differ.A.Dolly the sheepB. A strawberry plantC.TwinsD. Identical dogsTask two: Questions about cloningWhat is a clone?How is a clone produced?What benefits can humans gain from cloning?What problems may arise when humans are cloned?Task three: Free talkIn pairs, discuss what you understand about cloning, then list the questions you want to find out. Share your lists with one another.1. Should we clone human?2. Could cloning replace sex as the means of creating new human life?3. Could a parent clone a child who is dying of a terminal illness?The Second Period ReadingAims:1. Help the Ss to know how to describe cloning and how to catch the details of the text.2. Activate the Ss to show their opinions about the cloning and enable the Ss to write and article on this debate.Contents:Leading in by revision.Task one: Fast readingWhat is a clone?Show the following.1. Cloning means making a copy of an animal or a plant. (F. e xact… another)2. Gardeners can make a lot of money by cloning plants.(T.)3. Cloning animals is as complicated as cloning plants.(F. more than)4. Dolly the sheep was the first successful clone of a mammal. (T.)5. Natural clones happen in animals as well as in plants.(T)Task two: Careful readingRead the text again, try to answer the following questions and find out the main idea of each paragraph .Questions:1. What’s the main idea of the text?2. How many years did the sheep that donated the somatic cell most probably live?3. Why did the Cloning of Dolly the sheep succeed?4. What does the word ‘straightforward’ mean in the second paragraph?5. What is the writer’s attitude toward cloning in this passage?The main idea of each paragraph:Para. 1 Cloning is a way of making an copy of another animal and plant.Para. 2 Cloning has two major uses.Para. 3 The problems of Dolly.Para. 4 The effect of Dolly.Para. 5 It is forbidden to clone human being.Task three: Notes for debating: Should we use cloning?Argument for cloning:Cloning will be beneficial to humansWe could use cloning to cure illnesses.Arguments against cloning:healthy risks form mutation of genesemotional risksagainst naturerisk of abuse of the technologyCloned animals get ill and die quite young;The Third Period Language PointsAims:1. Enable the Ss to grasp the words of cloning.Get the Ss to master some useful expressions.Contents:1. differ v.1) “To be dissimilar or unlike in nature, quality, amount, or form”eg：Ambition differs from greed.2) “To be of a different opinion; disagree”eg：The critic differed with the author on several facts.2. exact adj. “Strictly and completely in accord with fact; not deviating from truth or reality”eg：an exact account; an exact replica; your exact words.3. commercial adj. 1) “Of or relating to commerce” 2) “Engaged in commerce’eg：a commercial loan; a commercial attaché; a commercial trucker.4. straightforward adj. 1) “honest’ 2) “easy to understand”eg: a ~ explanation; written in ~ language; a ~ problem in algebra5. procedure n.1) ‘A manner of proceeding; a way of performing or effecting something’eg：complained to the manager, and by this procedure got the money back.2) “A series of steps taken to accomplish an end”6. undertake v.1) “To take upon oneself; decide or agree to do”eg：undertake a task.2) “To pledge or commit (oneself) to’eg：undertake oneself to care for an elderly relative.7. breakthrough n.1) “An act of overcoming or penetrating an obstacle or restriction.”2) ‘A military offensive that penetrates an enemy's lines of defense’eg: a ~ in cancer research8. disturb v. “break the quiet, calm and peace’eg: She opened the door quietly so as not to disturb the sleeping boy.Don’t ~ the papers on my desk.9. arbitrary adj.1) “Determined by chance, whim, or impulse, and not by necessity, reason”eg：stopped at the first motel we passed, an arbitrary choice; arbitrary division of the group into halves.2) “Based on or subject to individual judgment or preference”eg：The diet imposes overall calorie limits, but daily menus are arbitrary.10. altogether adv.1) “Entirely; completely; utterly”eg：lost the TV picture altogether; an altogether new approach.2) “With all included or counted; all told”eg：There were altogether 20 people at the dinner.11. objection n. “The act of objecting”eg: He has a strong ~ to getting up early.~s to the plan will be listened to sympathetically.12. media n. 媒体eg: The running for president drew the ~’s attention.Now the press is an useful media.13. moral adj.1)“Of or concerned with the judgment of the goodness or badness”eg：moral scrutiny; a moral quandary.2) “Teaching or exhibiting goodness or correctness of character”eg：a moral lesson.14. accumulate v. “To gather or pile up”eg: By buying ten books every month, he soon ~d a library.Dust soon ~s if the room is not swept.15. forbid v.1) “To command (someone) not to do something”eg：I forbid you to go.2) “To command against the doing or use of (something); prohibit”eg：forbid smoking on trains.The Forth period Learning about language and Using languageAims:Let the Ss know more about the cloning.Improve the students’ listening, reading and writing ability.Contents:Task one: gap fillingplete the sentences using suitable words or phrases from the prevision sections.2.Rewrite the sentences using words of similar meaning to replace the underlined words.e the words and phrases below to fill in the passage.Task two: reading and discussing1.Read the passage and answer the questions.2.In pairs, discuss which extinct animals described below (which died out less than 10,000 yearsago) are worth restoring by means of cloning.a. Auroch (1627)b. Dodo bird (1755)c. Great auk (1844)d. Quagga (1883)Task three: listening and writing1.Read the statements before listening. Tick those that you hear.2.Listen to the tape again and then work with a partner to fill in the chart on page 17.3.Whose idea do you agree with according to the listening materials? Get ready to write acomposition. Think about the reasons for your point of view. Use your own ideas as well as those in the text.。

Unit 2 CloningThe First Period ReadingTeaching goals1. Target languagea. 重点词汇和短语clone, commercial, producer, undertake, arbitrary, object, forbid, accumulate, cast down, object to, the media, in favour ofb. 重点句子It is a way of...The fact is that...The question that occurred ...2. Ability goalsEnable 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 goalsHelp the students learn how to describe cloning.Teaching important pointsHow to describe cloning.Teaching difficult pointsHelp the students analyze the writing techniques of the article.Teaching methodsSkimming, task-based method and debate method.Teaching aidsA recorder, a projector and some slides.Teaching procedures && waysStep I Lead-inThis topic is difficult for students. So teacher should help the students learn more about it. Do this in the way of asking and answering questions.T: You can imagine how rapidly the modern science and technology develop. I think most of you must know something about space traveling, submarine exploration, robot, maglev train, gene engineering etc. But in recent years, a hot topic, cloning is often mentioned, especially when the cloning Dolly the sheep appeared. You may have first heard of cloning when Dolly the Sheep showed up on the scene in 1997. Cloning technologies have been around for much longer than Dolly, though. First thing first, what is cloning and a clone? The dictionary says cloning is the technique of producing a genetically identical duplicate of an organism. A clone is said to be all descendants derived asexually from a single individual, as by cuttings, bulbs, by fission, by mitosis, or by parthenogenesis reproduction. It sounds very different andcomplicated to us. In fact, I mean, in our daily life, this happens often. For example, gardeners take cuttings from growing plants to make new ones. You often see that your mother picks a small branch from a growing plant to make a new one. If she likes this kind of flowers, she can do cloning. Cloning also happens in animals or human beings when twins identical in sex and appearance are produced from the same original egg. The fact is that cloning plants is straightforward but the cloning of animals is more complicated. The possibility of human cloning, raised when Scottish scientists at Roslin Institute created the much-celebrated sheep “Dolly”, aroused worldwide interest and concern because of its scientific and ethical implications. You can give your questions if you are interested in this topic. I am here today one of the scientists who work in this field. I am ready to answer any of your questions.S: Now we know what is cloning. Are there different types of cloning?T: When the media report on cloning in the news, they are usually talking about only one type called reproductive cloning. There are different types of cloning however, and cloning technologies can be used for other purposes besides producing the genetic twin of another organism. A basic understanding of the different types of cloning is key to taking an informed stance on current public policy issues and making the best possible personal decisions. The following three types of cloning technologies will be discussed: (1) recombinant DNA technology or DNA cloning, (2) reproductive cloning, and (3) therapeutic cloning.S: Was Dolly created by what cloning? And why was Dolly so important?T: Reproductive cloning is a technology used to generate an animal that has the same nuclear DNA as another currently or previously existing animal. Dolly was created by reproductive cloning technology. She was the first mammal to be cloned from adult DNA taken from an adult cell. Previously, animals had only been cloned using embryo cells which already have the potential to become a complete embryo in its own right. The big breakthrough with Dolly was to make a clone from an ordinary, adult cell —in this case from a female goat’s udder.S: Have you seen Jurassic Park? In this feature film, scientists use DNA preserved for tens of millions of years to clone dinosaurs. They find trouble, however, when they realize that the cloned creatures are smarter and fiercer than expected. Could we really clone dinosaurs?T: In theory? Yes. What would you need to do this? A well-preserved source of DNA from the extinct dinosaur, and a closely related species, currently living, that could serve as a surrogate mother. In reality? Probably not. It’s not likely that dinosaur DNA could survive undamaged for such a long time. However, scientists have tried to clone species that became extinct more recently, using DNA from well-preserved tissue samples.More questions about cloning are given in the appendix. The information above is for reference only. Or you can choose several students and ask them to act out a short play whose main topic is as follows:An old man who was dying left all his fortune to his own son. But he did not know that his son was cloned. So two same young men both claimed that they were the old man’s son. They quarreled and fought with each other; at last they went to the judge.The judge let them check DNA. The result was that their DNA was the same. Now even the judge did not know what to do.In this part the teacher can give the students some advice to act out. According to this play teacher ask the students several questions:1. Do you want to be cloned or not? Why?2. If you are the judge what will you do?3. Can you tell me the advantages of cloning?4. And what is the disadvantage?DiscussionIn this part the students will discuss the relationship between the development of technology and social customs.T: As the technology develops day by day, it has a more and more important influence on the whole society. Technology affects social customs and ethics, sometimes technology may go against the conventional thinking, then comes the problem that whether we should stop the development of research or change the ethics.S1: As technology develops in almost every field, a lot of our original customs and ethics changed, either because they are out of time or not so scientific. For example millions of years ago human ate meat of animals without heating them. Later people used fire and no longer ate raw meat and they also used fire to scare dangerous animals.S2: I think we could not stop the development of technology, for it may develop in the way which is acceptable by social customs.…Look at picturesT: Look at the pictures and discuss which ones are natural clones and which ones are man-made. Then explain how they differ.S: I think the twins are natural clones and the Dolly sheep is man-made.T: You are right! Can you explain how they differ?S: The twins were born at the same time, but the Dolly sheep is man-made.T: Anything else? Who want have a try?S: I think the identical dog is man-made.T: Good job!Step Ⅱ Pre-readingBefore class, ask the students to search for some information about this topic. Now show your questions on the screen, and then let them discuss with each other.T: Now please work in pairs and discuss about cloning. Then list the questions you want to find out. Share your list with your partner.Ss: Yes, sir / madam.Questions about cloning: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?5. Should we clone human?6. Could cloning replace sex as the means of creating new human life?7. Could a parent clone a child who is dying of a terminal illness?After a few minutes.T: Do you have other questions? V olunteer!S: I have! What is the writer’s o pinion?T: Good job! I think many of you have questions, now let us read the article with the questions.Suggest answers:1. It is a way of making an exact copy of another animal and plant.2. This happens in plants when gardeners take cuttings from growing plants to make new ones, and when small parts of a plant are taken and gown in a laboratory. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.3. It can help cure disease and can help couples who have no baby to bear a new baby.4. There may be more bad people like Hitler.5. In my opinion, I do not agree, for it may cause many moral problems.6. No. Because cloned human has the same quality as the real human, natural born baby’s quality is hig her than his parents.7. No. The cloned baby also has the disease.Step Ⅲ While-readingGet the students to comprehend the passage quickly and accurately and meanwhile help the students form a good habit of reading.T: Have you got the answers of your questions? Now please skim the passage fast to obtain a general understanding of the whole passage. While reading, divide the whole passage into several parts and find out the main idea of each part.Show the following.Para. 1 Cloning is a way of making an exact copy of another animal and plant. Para. 2 Cloning has two major uses.Para. 3 The problems of Dolly.Para. 4 The effect of Dolly.Para. 5 It is forbidden to clone human being.Step Ⅳ Post-readingAsk the students to read the passage again to finish three tasks.T: Now let’s listen to the tape. While listening, pay more attention to the correct pronunciation and tone. Then read the text by yourselves to get the answers to the three tasks. You can work in groups.T: First, what are the problems or dangers of cloning?S: Let me have a try! First, the cloned animals have the same illness of the old animals and the same goes with the other species. Second, the cloned animals have short life and can cause moral questions.T: You are right! And what are the advantages of cloning?S: I know! Firstly, gardeners use it all the time to produce commercial quantities of plants.Secondly, it is valuable for research on new plant species and for medical research on animals. Thirdly, it suddenly opens everyone’s eyes to the possibility of using cloning to cure serious illnesses, and even producing human beings.T: What is the writer’s opinion? What do you think is the writer’s point of view in t his reading passage? Is it in favour of cloning or against it?S1: I think the writer is in favour of it, because there are many advantages of cloning. It can help people solve many problems in our daily life.S2: I think the writer doesn’t agree with it, because if the cloning technology can be used in an evil way, it can cause much trouble to our society.T: The next question: What is your opinion of cloning? Give the reasons.S1: As a coin has two sides, everything has two aspects. First, if the cloning is used in a correct way it can bring many conveniences to us. Such as: curing serious illnesses and being used to produce commercial qualities of plants. On the other hand, if the cloning is used in an evil way it can cause much troubles: such as moral questions.S2: My view on cloning and nuclear transfer is that it is ethical. So actually I find no reason to clone presently. I have this opinion currently, because scientists are unable to successfully clone using nuclear transfer as of today.S3: I also have a problem with the possible effects of using nuclear transfer on a large scale. This is because I fear that cloning could greatly reduce genetic diversity. I believe if we were to interfere with the genetic diversity of an entire population we would undoubtedly fail.S4: As you can see I believe cloning using nuclear transfer should not be used on humans for any reason. I think if we were to use cloning it should be closely monitored as to what dangers are involved in having copies of people. I also think this technology should not be used until success.S5: I agree that we should develop cloning. I’m not afraid of cloning Hitlers or excited to clone Einsteins. I would say the time and the environment produced Hitler, not his DNA. So you do not need DNA from Hitler to produce a Hitler. In fact, there are Nazis already present. We should make use of cloning to benefit future generations. You can imagine that how happy the people are if they can recover from the serious illness or get back the son who has just lost his life in an accident by cloning.T: Good job! Yes, if we our human beings use the scientific technology properly it can bring many advantages to us!S: Why did Dolly’s appearance raise a storm of objections and have a great impact on the media and public imagination?T: Because nothing really prepared the world for the 1997 announcement that a group of Scottish scientists had created a cloned sheep named Dolly. Many folks believe that within the next decade, we will hear a more shocking announcement of the first cloned human. Scientists in South Korea have already created human embryonic stem cells through cloning. Until now, the idea of human cloning has only been possible through movie magic, but the natural progression of science is making human cloninga true possibility. We’ve cloned sheep, mice and cows, so why not humans? Some countries have set up laws banning cloning, but it is still legal in many countries. Imagine using a piece of your great-grandmother’s DNA to create a clone of he r. In a sense, you could be the parent of your great-grandmother. This opens the door to many ethical problems, but it’s a door that could soon be opened.S: So what happens next?T: Whatever the reasons, the new cloning technologies have sparked many ethical debates among scientists, politicians and the general public. Several governments have considered or enacted legislation to slow down, limit or ban cloning experiments outright. It is clear that cloning will be a part of our lives in the future, but the course of this technology has yet to be determined. Cloning could cause birth defects, but it’s not going to change society. In the absence of any legislation or regulation, cloning attempts will quietly continue. Eventually, cloning will succeed (if it hasn’t happened already), and humankind will have taken another step down the road of biological engineering. You young students are the future of the world. You should study hard today, and you will be able to face this difficult problem and know how to deal with it. ExplanationHomeworkAsk the students to do the following.1. Complete the exercises on page 13.2. Recite the key sentences in the text.3. What is Clone? You might not believe it, but there are human clones among us right now.Have you ever wished you could have a clone of yourself to do homework while you hit the skate park or went out with your friends? Imagine if you could really do that. Where would you start?。

导学案：Module 8 Unit 2 CloningText 1 Cloning: Where is it leading us?Learning Aims:1. To arouse student s’ interest in learning about cloning.2. To learn about the procedure of animal cloning and the life of Dolly the sheep.3. To develop student s’ some ba sic reading skills.Learning important and difficult points:1. How to describe cloning.2. How to catch the details of the text.3. How to grasp the main idea of each paragraph and the whole passage.Learning procedures:Step I Lead-inLead in the topic by watching a video and ask students what is the video about.Step II While-readingTask One1.Match the main idea with each paragraphPara 1 A. Two major uses and the procedure of cloning.Para 2 B. Cloning is a way of making an exact copy of another animal or plant. Para 3 C. The effect of Dolly the sheep.Para 4 D. It is forbidden to clone human beings.Para 5 E. The problem of dolly the sheep.2.What’s the main idea of the passage?The passage tells us that animal cloning raised and scientists are not sure about its .3. What’s the writing style?A. ExpositiveB. ArgumentativeC. NarrativeD. DescriptiveTask Two: Detailed readingPara1：The definition of cloningWhat is cloning? Cloning is a way of making an exact copy of another animal and plant. It happens both in ______ and in_______. They can be cloned by ________ and _______.Para2：The major uses and procedures of cloningThe wor d “straightforward” means ______.A.uncomplicatedB. honestC. frankD. difficultWhen was the cloning of Dolly the sheep born? What did the scientists paid off with a breakthrough?___________________________________________________________________________ How do scientists clone a sheep? Let’s give a right order of cloning Dolly ‘s procedure①The cell divides and grows into an embryo.②The lamb is the clone of the donated cell from Sheep B.③ A nucleus is taken out of Sheep B’s somatic cell .④The embryo is put into female Sheep C.⑤The egg cell from Sheep A and the nucleus from Sheep B are joined using electricity.⑥The egg cell from Sheep A is removed a nucleus.The order:________ ________ ________ __________ _________ _______Para3: The problems of Dolly1)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 ____. Finally, the problem that occurred to the scientists was that a cloned animal lives_______ than the original one.2)The sheep that donated the somatic cell most probably lived ________years.A. 3B. 6C. 9D. 133)Problems:Cloned animals may develop the________ of older animals.Cloned animals may lives __________than the original one.Para4: The impact of DollyIts’ ap pearance raised and the media and public imagination. Guess from context(上下文):The word “controversial” in Para 4 probably means :____________.A. complicatedB. arguableC. importantD. traditionalPara5: Peopl e’s reaction to cloningI.True 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.II. The writer’s attitude towards cloning_____________.A. positiveB. negativeC. neutralD. unknownTask Three: SummaryCloning has always been with us and is here to stay. It’s a way of making an____ (exactly) copy of another animal or plant. Cloning has two major uses. Firstly, gardeners useit all the time to produce commercial quantities of plants. Secondly, it’s 2.___ _ (value) for research on new plant species and for medical research on animals. Cloning animalsis a difficult task 3.(undertake). At last the determination and patience of the scientists paid4.in 1996 with a breakthrough—the cloning of Dolly the sheep.The fact 5.she seemed to develop normally was very encouraging. Then camethe disturbing news that Dolly had become 6.(serious) ill and she only lived six and a half years. Dolly’s appearance raised a storm of 7.(object) and had a great impact on the media and public imagination. Newspapers wrote of evil leaders hoping to clone 8.(they) to attain their ambitions. Religious leaders raised moral questions. Now some governments have 9.(forbid) research into human cloning,10.others think cloning is useful for humans.Step IV Post readingDiscussion:Practice activity: Are you in favor of the human cloning or against it? Why？Useful expressions:Team A: I would like to suggest that ______________ .so in my opinion ,human cloning is good. Team B: I don’t agree with you . firstly, from the passage we know that_____________________. Secondly_____________________,Thirdly ,_______________. So I think the research into human cloning should be forbidden . Benefits:Gardeners use it all the time to produce commercial quantities of plants.It opened everyone’s eyes to the possibility to cure serious illnesses.It is valuable for research on new plant species and medical research on animals.Problems or dangers:Dolly’s illnesses were more appropriate to a n older animal.Evil leaders may get themselves cloned to attain their ambitions.Religious leaders raised moral questions.Sum up : As a coin has two sides, everything has two aspects. On the one hand, if the cloning is used in a correct way it can bring many conveniences to us. Such as: curing serious illnesses and being used to produce commercial qualities of plants. On the other hand, if the cloning is used in an evil way it can cause much troubles: such as moral questions.教师寄语: One coin has two sides and we should treat things in a wise way.Step IV homeworkWrite a passage titled Is cloning goodor bad? Your passage should include the following：1)What is cloning 2)Advantages of cloning 3)Disadvantages of cloning4)Your opinion of it课文翻译Unit2 克隆：它将把我们引向何方？克隆一直与我们同在，而如今它还要持续下去。

高中英语 Unit2 Cloning reading2理解学案新人教版选修8Cloning reading2理解学案新人教版选修8【学习目标】分析文脉，理解课文，使用适当的阅读方法与技能，把握课文内容并获取信息，处理信息。

【学习重点，难点】提高阅读文章的技巧和如何从文章中获取有效的信息的能力。

【课型】新授课【回顾预习】熟读第二部分单词，浏览课文，了解大意。

【新知识学习】Task1、Class Report、 Task2、 Self-learning（自主学习）Skimming:1、Why don’t the author believe the dinosaurs can be cloned ?_________________________________________________ ________2、Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group?_________________________________________________________ _3 、How many years ago did dinosaursdisappeared?_________________________________________Scan ning: Arrange according totime________________________1 、research using the embryos of mice2、 first experimental clones of cows3、 first experimental clones of mice4、 work on the embryos of sheep and mice5、China’s first cloned twin calves6、 cloning of frogs7、 first clone of a mammal8、 cow gave birth to a bisonDetailedReading__________ for its impossibilityPerfect DNA is needed、There is not enough ________ in the group、 A (n) ______________ would be needed for the cloned extinct animals、_________________The chance of dinosaurs returning to the earth is _____________Find out the following phrases1、使---刻骨铭心_______________2、生，生产_____________3、不时的____________4、使复生，使复活___________5、白费力气，徒劳___________6、战胜疾病__________________7、意味着做某事______________8、把---传递给某人_______________9、死于---______________10、过自然的生活_______________11、以---为基础____________12、回到地球的机会 ________________ Step3、Discussion and presentation 小组讨论自主学习中的问题，并进行展示和点评,点评过程中要注意补充和质疑。