选修8unit2cloning,where is it leading us
人教选修8Unit2CloningWhereisitleadingus课件资料
1. What is a clone?
A clone is an animal or a plant produced naturally or artificially from the cells of another animal or plant and is exactly the same as it.
2. How is a clone produced？
The cloning of plants is simple and relatively easy. It can be done by taking cuttings (manmade cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.
C. Dolly successfully cloned a new lamb with the help of cloning scientists.
D. there were arguments about animal cloning and concerns about the future of cloning.
4. What problems may arise when humany want to clone themselves so they can live forever.
• People may want to clone dead children. • People may want to clone their favourite pets.
人教新课标高中英语选修8第二单元 8 Unit 2 Cloning 学案含答案
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
Learn the text and master the major uses of cloning and the success and problem of2.
cloning Dolly the sheep.
Learning Difficult Points:
1.Help Ss improve the students' reading ability.
D. There were arguments about animal cloning and concerns about the future of cloning.
7. What is the writer's attitude toward cloning in the passage?
B. Dolly's serious disease and final death disturbed everyone in the world.
C. Dolly successfully cloned a new lamb with the help of cloning scientists.
B. Animal clones may develop the illness of older animals and may die younger thanthe
英语高考复习 人教选修八 Unit 2 课文词汇语法填空 含答案
选修8 Unit 2 Cloning-ReadingCLONING: WHERE IS IT LEADING US?Cloning has always been with us and is here to stay. It is a way of making an exact copy of another animal or plant. It happens in plants 1. gardeners take cuttings from growing plants to make new ones. It also happens in animals when twins identical in sex and appearance 2. (produce) from the same original egg. The fact is 3. these are both examples of natural clones.Cloning has two major uses. Firstly, gardeners use it all the time to produce 3. ___________ (commence) quantities of plants. Secondly, it is valuable for research on new plant species and for medical research on animals. Cloning plants is straightforward while cloning animals is very complicated. It is a difficult task 4. ___________ (undertake). Many attempts to clone mammals failed. But at last the 5. ___________ (determine) and patience of the scientists paid 6. in 1996 with a ___________ (突破)- the cloning of Dolly the sheep. The procedure works like this: On the one hand, the whole 7. (science) world followed the progress of the first successful clone, Dolly the sheep. The fact that she seemed to develop normally was very 8. (encourage). Then came the disturbing news that Dolly 9. (become) seriously ill. Cloning scientists 10. (cast) down to find that Dolly's illnesses were more appropriate 11. a much older animal. Altogether Dolly lived six and a half years, half the 12. (long) of the life of the original sheep. 13. (sad) the same arbitrary fate affected other species, such as cloned mice. The questions that 14. (concern) all scientists were: "Would this be a major difficulty for all cloned animals? Would it happen forever? Could it 15. (solve) if corrections were made in their research procedure?"On the other hand, Dolly's appearance raised a storm of 16. (object) and had a great impact on the media and public imagination. It became controversial. It suddenly opened everybody's eyes to 17. possibility of using cloning to cure serious illnesses and even 18. (produce) human beings.Although at present human egg cells and embryos 19. (need) for cloning research are difficult to (获得), newspapers wrote of evil leaders hoping to clone themselves to ________ _________ ___________ (实现他们的野心). Religious leaders also raised (道德的) questions. Governments became nervous and more (保守的). Some began to reform their legal systems and 20. (forbid) research into human cloning, but other countries like China and the UK, continued to ___________ ___________ (积累证据) of the abundant medical aid that cloning could provide. However, scientists still wonder 21. ____________ cloning will help or harm us and where it is leading us.THE RETURN OF THE DINOSAURS?The possibility of cloning fierce and extinct wild animals has always excited film makers. And they are not the only ones! The 1. (popular) of films such as Jurassic Park, 2. which a scientist clones several kinds of extinct dinosaurs, proves how the idea 3. (strike) a mixture of fear and excitement 4. ________ people's hearts. But in fact we are a long way 5. being able to clone extinct animals. Scientists are still experimenting 6. cloning mammals. This is because the cloning of mammals is still a new science and its story only began seriously in the 1950s as this list shows:1950s cloning of frogs 1996 first clone of a mammal: Dolly the sheep 1970s research using the embryos of mice 2000 cow gave birth to a bison1979 work on embryos of sheep and mice 2001 China's first cloned twin calves 1981 first experimental clones of mice 2002 first cloned cats1983 first experimental clones of cows 2005 first cloned dog________ ________ _______ _______ (不时) people suggest that extinct animals like dinosaurs, can 7. (possible) be brought back to life through cloning. Unfortunately, with what we know now, this is either impossible or 8. _____________ (suit). There are many reasons.◎The (最初的) requirement is that you need perfect DNA (which gives information for how cells are to grow).◎All efforts of cloning an animal will be ______ _______ (徒劳) if there is not enough diversity in the group 9. (overcome) illnesses. Diversity in a group means 10. (have) animals with their genes arranged in different ways. The advantage is that 11. there is a new illness some of these animals may die, but others will survive and pass 12. the ability 13. (resist) that disease to the next generation. The great drawback to cloning a group of animals is that they would all have the same arrangement of genes and so might die of the same illness. Then none of them would 14. (leave) to continue the species. ◎It would be unfair to clone any extinct animals if they were to live in a zoo. A suitable habitat would be needed for them to lead a natural life.15. (base) on what we know now, you cannot clone animals that have been extinct longer than 10,000 years. Actually, dinosaurs disappeared 65,000,000years ago. So the chance of dinosaurs ever returning to the earth is (mere) a dream.选修8 Unit 2 Cloning-ReadingCLONING: WHERE IS IT LEADING US?Cloning has always been with us and is here to stay. It is a way of making an exact copy of another animal or plant. It happens in plants 1. when gardeners take cuttings from growing plants to make new ones. It also happens in animals when twins identical in sex and appearance 2. are produced (produce) from the same original egg. The fact is 3. that these are both examples of natural clones.Cloning has two major uses. Firstly, gardeners use it all the time to produce 3. commercial (commence) quantities of plants. Secondly, it is valuable for research on new plant species and for medical research on animals. Cloning plants is straightforward while cloning animals is very complicated. It is a difficult task 4. to undertake (undertake). Many attempts to clone mammals failed. But at last the 5.determination (determine) and patience of the scientists paid 6. off in 1996 with a breakthrough (突破)- the cloning of Dolly the sheep. The procedure works like this: On the one hand, the whole 7. scientific (science) world followed the progress of the first successful clone, Dolly the sheep. The fact that she seemed to develop normally was very 8. encouraging (encourage). Then came the disturbing news that Dolly 9. had become (become) seriously ill. Cloning scientists 10. were cast (cast) down to find that Dolly's illnesses were more appropriate 11. to a much older animal. Altogether Dolly lived six and a half years, half the 12. length (long) of the life of the original sheep. 13. Sadly (sad) the same arbitrary fate affected other species, such as cloned mice. The questions that 14. concerned (concern) all scientists were: "Would this be a major difficulty for all cloned animals? Would it happen forever? Could it 15. be solved (solve) if corrections were made in their research procedure?"On the other hand, Dolly's appearance raised a storm of 16. objections (object) and had a great impact on the media and public imagination. It became controversial. It suddenly opened everybody's eyes to 17. the possibility of using cloning to cure serious illnesses and even 18. to produce (produce) human beings.Although at present human egg cells and embryos 19. needed (need) for cloning research are difficult to obtain (获得), newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions (实现他们的野心). Religious leaders also raised moral (道德的) questions. Governments became nervous and more conservative (保守的). Some began to reform their legal systems and 20. forbade (forbid) research into human cloning, but other countries like China and the UK, continued to accumulate evidence (积累证据) of the abundant medical aid that cloning could provide. However, scientists still wonder 21. whether cloning will help or harm us and where it is leading us.THE RETURN OF THE DINOSAURS?The possibility of cloning fierce and extinct wild animals has always excited film makers. And they are not the only ones! The 1. popularity (popular) of films such as Jurassic Park, 2. in which a scientist clones several kinds of extinct dinosaurs, proves how the idea 3. struck (strike) a mixture of fear and excitement 4. into people's hearts. But in fact we are a long way 5. from being able to clone extinct animals. Scientists are still experimenting 6. with cloning mammals. This is because the cloning of mammals is still a new science and its story only began seriously in the 1950s as this list shows:1950s cloning of frogs 1996 first clone of a mammal: Dolly the sheep 1970s research using the embryos of mice 2000 cow gave birth to a bison1979 work on embryos of sheep and mice 2001 China's first cloned twin calves 1981 first experimental clones of mice 2002 first cloned cats1983 first experimental clones of cows 2005 first cloned dogFrom time to time (不时) people suggest that extinct animals like dinosaurs, can 7. possibly (possible) be brought back to life through cloning. Unfortunately, with what we know now, this is either impossible or 8.unsuitable (suit). There are many reasons.◎The initial (最初的) requirement is that you need perfect DNA (which gives information for how cells are to grow).◎All efforts of cloning an animal will be in vain (徒劳) if there is not enough diversity in the group 9. to overcome (overcome) illnesses. Diversity in a group means 10. having (have) animals with their genes arranged in different ways. The advantage is that 11. if there is a new illness some of these animals may die, but others will survive and pass 12. on the ability 13. to resist (resist) that disease to the next generation. The great drawback to cloning a group of animals is that they would all have the same arrangement of genes and so might die of the same illness. Then none of them would 14. be left (leave) to continue the species.◎It would be unfair to clone any extinct animals if they were to live in a zoo. Asuitable habitat would be needed for them to lead a natural life.15. Based (base) on what we know now, you cannot clone animals that have been extinct longer than 10,000 years. Actually, dinosaurs disappeared 65,000,000 years ago. So the chance of dinosaurs ever returning to the earth is merely (mere) a dream.。
高中英语_人教版高二英语选修八Unit2Cloning：Whereisitleadingus教学设计
Book8 Unit2 CloningPeriod 1 Reading在英语教学中“阅读理解能力”是学生从阅读中获取信息的能力以及对文章理解的速度和准确性的关键因素。
培养学生的阅读能力是课文阅读教学的主要目标，同时还要注意培养学生在阅读过程中获取和处理信息的能力，让学生学会利用相关的英语知识去解读英语阅读材料。
本节课是一节阅读课，设计过程如下：导入引出克隆这一话题 --- 通过略读掌握段落大意，文章结构( read for structure )--- 通过精读了解文章细节信息( read for information )--- 通过对细节的推理学会猜测词义和推断作者立场态度 ( read for reference ) --- 通过整合信息，以高考语法填空的题型小结课文内容( read for consolidation ) ---独立思考后合作讨论( read for critical thinking ) --- 课后作业(写作拓展)。
教材里本单元内容，语言技能和语言知识都是围绕“克隆”这一中心话题设计的。
具体涉及“什么是克隆” , “克隆羊多利是如何诞生的”，“克隆的利与弊”等。
教师可在充分利用教材资源的基础上，结合学生的实际情况设计教学活动，旨在帮助学生有效地掌握阅读技巧，形成有效地学习方法和阅读策略，同时了解说明文篇章结构和写作特点，为下一步进行议论文的写作教学做好准备。
目标聚焦一、知识点初步理解、掌握克隆意为无性繁殖，克隆技术即为无性繁殖技术。
学习课文中关于克隆这一新生物技术的有关知识，学习分析课文中的长难句子，初步感知课文中出现的的本单元要学的语法现象。
二、能力点1、能理解文章主旨大意，获取信息、处理信息、进行推理判断和表达的能力。
2、形成分析篇章结构的能力，提升逻辑思维能力3、学会增加语言的输出量，提高语言表达能力。
4、能利用上下文猜测生词词义三、兴趣点 1、利用已获取的信息发表自己对进行人类克隆问题的看法。
高中英语人教版选修8 Unit2 Cloning Reading Cloning：Where is
English learning Plan of Senior 2（导学案）The wish words of teacher's（教师寄语）：Relax! Be patient and enjoy yourself. Learning foreign languages should be fun. (放松点！要有耐性，并让自己快乐！学习外语应该是乐趣无穷的。
）㈠Teaching aims(学习目标)1.Knowledge aims（知识目标）⑴To learn about cloning by reading.⑵.To master and understand some structures and complex sentences.2.Ability aims（技能目标）⑴. Read passages by using different reading skills (skimming﹑scanning﹑careful reading) .⑵. Express own opinions about cloning in form of debate..3.Emotion aims（情感目标）⑴Be interested in science technology (cloning).⑵. Learn to team up with others.㈡Special and difficult Points(学习重难点)1. Learn different reading skills(Skimming, scanning﹠careful reading).2 Learn more about cloning.3. Describe cloning in your own words.㈢The procedure of learning （学习过程）Before class (课前预习胸有成竹)【自主预习】㈠学法指导⑴通读本篇文章，查字典，猜生词，记短语，勾出文中复合句以及难句。
人教版新课标高二英语选修八第二单元Unit 2 Cloning 第一篇课文分析课件23张PPT
• have a discussion with sb about sth • 与某人谈论某事物
• James was having a long discussion with Peter, but I don't know what it was about.
• from hand to hand.由一人传到他人之手 • by hand 用手工 • at hand 即将到来的,在手边的
• 表示时间、频率、方式、或方位、的副词 或介词短语位于句首，并且句子主语为名 词时，句子要用全部倒装。这些词有then, now ,often, here, there, up, down ,away, off, in, out, in the room ,on the wall等
问。 • rise是不及物动词，其意思是“上升，起来”。
• The sun rises in the east every day. • 有时候也会用于表达”音量“”地位“等非实物的提升
• My spirits rise whenever I think of my friends. • 一想到朋友们，我的心情就会好起来。 • arise vi “起因于，发生”。
他正在调查这个难题。 • She spent two years researching and
filming her documentary. • 她花了两年时间搜集素材，拍摄纪录片。
Book 8 Unit 2 Cloning
Cloning: Where is it leading us? 课文逐段分析课件
选8UNIT2 Cloning-Where is it leading us译文
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。
这是一种用来生产与原型完全相同的动植物的方法。
当园艺师从生长着的植物上剪下枝条来培植新植物时，就会产生这种现象。
这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是克隆。
实际上，这些都是自然克隆现象。
克隆技术有两大用途。
第一，园艺师一直用它生产大量的供商用的植物；第二，它在对新植物物种的研究以及对动物的医学研究方面都是很有价值的。
克隆植物简单，但克隆动物就比较复杂了，是一项很难完成的任务。
克隆哺乳动物的多次尝试都失败了。
但是，科学家的决心和耐心最终得到了回报，这就是1996年具有突破性的克隆羊“多莉”的诞生。
它的程序如下图所示：1．母羊(A)提供一个卵细胞。
2．在卵细胞中取出细胞核。
3．卵细胞准备接受新的细胞核。
4．母羊(B)提供一个供克隆的躯干细胞。
该细胞核应包含生产一头新羊所需要的全部基因。
5．取出该细胞的细胞核。
6．用电把母羊(B)的躯干细胞核和母羊(A)的卵细胞结合起来。
7．细胞分裂并生长成胚胎。
8．把胚胎植入另外一头母羊(C)体内，母羊(C)就是克隆羊的代孕者。
9．这头小羔羊就是母羊(B)所提，供的细胞核克隆而成的。
一方面，整个科学界都在关注着首例成功的克隆动物多莉羊的成长¨多莉看来是在正常地成长着，这很令人鼓舞。
接着传来了多莉病重的坏消息。
研究克隆的科学家发现多莉得的病更容易发生在年老的羊身上．这让他们很沮丧。
多莉总共只存活了六年半，这是它的原型羊寿命的一半。
可悲的是，同样无法控制的命运也在影响着其他物种，如克隆鼠。
科学家的脑海里产生的问题是：“这是不是所有克隆动物的一个主要困难呢？这种现象会不会永远发生？如果改进程序，问题会不会解决？另一方面，多莉的出生引起了一阵强烈的反对，对媒体和公众的想象力也产生了巨大的影响。
它引起了争议，因为它突然打开了人们的眼界，看到了有可能：用克隆技术来治疗重病，甚至克隆出人类。
人教高中英语选修八 Unit2-Cloning教学设计
Unit2 CloningReading: CLONING: WHERE IS IT LEADING US? 教学设计一、教材分析本单元以Cloning为话题，旨在通过单元教学，使学生了解克隆技术的优缺点，学会表达和支持个人观点，能用所学的有关Cloning的词汇去表述自己对这一新技术的观点和看法。
”阅读”（Reading）部分提供的材料CLONING: WHERE IS IT LEADING US?是一篇介绍克隆技术的说明文, 具体介绍了植物与动物克隆的区别，多利羊的诞生与死亡及由此引发的争论。
帮助学生进一步认识克隆的意义在于解决医学上的难题，为人类服务。
从话题内容上分析，Warming Up 与Reading相一致，从教材份量来说，可将Warming Up和Reading整合在一起，设计成一节任务型“阅读课（精读课）”。
二、学情分析我所带的两个班级的学生英语基础一般，平时较少阅读科学题材的文章, 知识面相对狭窄，阅读理解这篇文章还是有一定难度。
但学生的好奇心和学习接受能力比较强，可以布置学生课前上网或去图书馆找出一些有关克隆的资料，并与多媒体相结合简单介绍克隆及克隆技术的一些知识，让学生有了一定的知识准备以利于很好的理解课文。
三、设计理念及教学目标这节课的主要目的是培养学生跳读和细读的阅读技巧，使学生学会准确分析阅读问题，懂得从文章中找到关键句子摄取必要的信息，找出正确的答案。
我运用多媒体和学生搜索材料主动参与学习相结合，设计了表格、问答题、判断题和信息整理题。
这不仅提高学生的阅读技巧，也教会学生怎样处理不同的阅读问题。
四.教学目标Teaching goals1. Target language目标语言a. 重点词汇和短语clone，commercial，producer，undertake，arbitrary，object，forbid，ac cumulate，cast down，object to，the media，in favor ofb. 重点句子It is a way of….The fact is that….The question that concerned all scientists were: ….2. Ability goals能力目标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 学能目标Help the students learn how to describe cloning.Teaching important points 教学重点How to describe cloning.Teaching difficult point 教学难点Help the students analyze the writing techniques of the article. Teaching methods 教学方法Skimming, task-based method and debate method.Teaching aids 教具准备A recorder, a projector and some slides.Teaching procedures & ways教学过程与方式Step 1 Lead-in（3分钟）Show three cartoon pictures about cloning to arise students’interest s, then raise the question:1. What is cloning?2. Do you want to be cloned or not? why?通过展示图片和提问，激发学生对克隆技术的兴趣和好奇心，启发学生预测课文的内容，以便通过阅读验证自己的推测。
高中英语 Unit2阅读 Cloning Where is it leading us教案 新人教版选修8
英语选修8人教版新课标Unit 2阅读教案Unit 2 Cloning: Where isit leading us?中国书法艺术说课教案今天我要说课的题目是中国书法艺术，下面我将从教材分析、教学方法、教学过程、课堂评价四个方面对这堂课进行设计。
一、教材分析：本节课讲的是中国书法艺术主要是为了提高学生对书法基础知识的掌握，让学生开始对书法的入门学习有一定了解。
书法作为中国特有的一门线条艺术，在书写中与笔、墨、纸、砚相得益彰，是中国人民勤劳智慧的结晶，是举世公认的艺术奇葩。
早在5000年以前的甲骨文就初露端倪，书法从文字产生到形成文字的书写体系，几经变革创造了多种体式的书写艺术。
1、教学目标：使学生了解书法的发展史概况和特点及书法的总体情况，通过分析代表作品，获得如何欣赏书法作品的知识，并能作简单的书法练习。
2、教学重点与难点：（一）教学重点了解中国书法的基础知识，掌握其基本特点，进行大量的书法练习。
（二）教学难点：如何感受、认识书法作品中的线条美、结构美、气韵美。
3、教具准备：粉笔，钢笔，书写纸等。
4、课时：一课时二、教学方法：要让学生在教学过程中有所收获，并达到一定的教学目标，在本节课的教学中，我将采用欣赏法、讲授法、练习法来设计本节课。
（1）欣赏法：通过幻灯片让学生欣赏大量优秀的书法作品，使学生对书法产生浓厚的兴趣。
（2）讲授法：讲解书法文字的发展简史，和形式特征，让学生对书法作进一步的了解和认识，通过对书法理论的了解，更深刻的认识书法，从而为以后的书法练习作重要铺垫！（3）练习法：为了使学生充分了解、认识书法名家名作的书法功底和技巧，请学生进行局部临摹练习。
三、教学过程：（一）组织教学让学生准备好上课用的工具，如钢笔，书与纸等;做好上课准备，以便在以下的教学过程中有一个良好的学习气氛。
（二）引入新课，通过对上节课所学知识的总结，让学生认识到学习书法的意义和重要性！（三）讲授新课1、在讲授新课之前，通过大量幻灯片让学生欣赏一些优秀的书法作品，使学生对书法产生浓厚的兴趣。
高中英语 Unit 2 Cloning reading cloning where is it leading us课件 新人教版选修8
D. is usually as healthy as the original one
推理判断
5. The sheep that donated the somatic
cell most probably lived ____ years.
A. 3 B. 6 C. 12 D. 13
6. 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. Famous persons who have passed away can be cloned. D. Cloning can help keep animals from becoming extinct.
Find the main idea of each paragraph.
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Para 3: The problems of Dolly
About
Dolly the sheep
Encouraging news: Dolly developed
__________. normally Disturbing news: Dolly lived for six and a half years, half the length of the life of the origi uses and procedures of cloning Para 5 People’s reaction to cloning Para 3 The problems of Dolly Para 4 The impact of Dolly Para 1 The definition of cloning
Para 2: The major uses and procedures of cloning
1. How many major uses do cloning have? Firstly, …commercial… Secondly, …research… 2. How many female sheep participate in the cloning of a new sheep? 3
Para 4: The impact of Dolly
The word “controversial” in Para 4 probably
means ________. B
A. complicated
B. arguable C. important
Para 5: People’s reaction to cloning
discussion Suppose human cloning is permitted by law, would you like to clone yourself? And why?
Para 1: The definition of cloning
It happens both in ________ plants and in _______. animals
They can be cloned by __________ themselves and ________. humans Natural clone Man-made clone
in 1996 cloned sheep in 2001 cloned cattle In 2002 cloned rabbits and cats In 2005 cloned dogs
Choose the best answer.
1). 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 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 future.
True or false: 1. People feared that Cloned Hitlers would do harm to the world. T 2. All the research into human beings will be forbidden. F
Many governments forbade research into human beings. 3. Some countries will use cloning in a wise way. T