选修8unit2cloning-where-is-it-leading-usPPT课件
高中英语《Unit 2 Cloning Where is it leading us》优质教学课件设计
I am against cloning. My reasons are as follows :
help us find cures for
For one thing , not all
serious illnesses.
supported.
1.Write a composition about your opinions of cloning animals according to your discussion.
2.Surf the Internet and write a report on peoples’ attitudes to cloning.
Dolly caused argument. Evil leaders hoped to clone 4. _th_emselves(them) for their ambitions. Religious leaders 5.raise_d (raise) moral questions. Some governments 6. fo_rb_ade(forbid) research into human cloning while others continued. Scientists may use it 7._to cure_ (cure) serious illnesses. But we still wonder where it is leading us.
aDt’olly’s fate Dolly was born.
scientists’ feelings
excited
Dolly developed normally.
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.。
选修八Unit2-CLONING
identical adj同一的；一模一样的
The fact is that these are both examples of natural clones.实际上，这些都是自然克隆现象。
Cloning has two major uses. 克隆技术有两大用途。 Firstly, gardeners use it all the time to produce commercial quantities of plants. 第一，园艺师一直用它生产大量的供 商用的植物；
complicated adj复杂的，难懂的
undertake -undertook-undertaken vt着手，从事，承担
Many attempts to clone mammals failed. 克隆哺乳动物 的多次尝试都失败了。
Undertake
undertake(undertook, undertaken)v.着手,从事,承担; 担保负责;承诺
11. be a long way form离···还差很远 12. Experiment with用···做实验 13. give birth to 产生，造成，生（孩子） 14. from time to time不时，偶尔 15. bring back to life使复生；使复活 16. in vain白费力气；枉费心机 17. be based on以···为基础 18. in good/poor condition状况很好（坏）
情况很好（坏）
Differ page 10
1.有区别，相异 Differ from=be different from与···不同 Differ in在···方面不同 例句：Apparently, the twins differ from each other in
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。
人教版高中英语选修八Unit2《Cloning》
Trueorfalse:
1.Cloningmeansmakingacopyofananimaloraplant.
()
F
2.Gardenerscanmakealotofmoneybycloningplants
.()
T
3.Cloningissomethingthathasbeendevelopedquite
mans.
Animalclonesmayd Cloningplantscanpro
ieyoungerthanthed duceplantsofsimilarq
onoranimals
ualityforsale
Problemsorda Advantagesofclonin ngersofcloning g
7.赞成8.反对infavorof
objecttosth.
Whichgroupisthewinner?
完成句子
1. Thenaughtyboy_w__a_sf_o_r_b_i_d_d_e_n_t_o_le_a_v_e_t_h_e_cl_a_s_s_ro_o_m__ (被禁止离开教室）asapunishment.(forbid)
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。
人教版高中英语选修8Unit2《Cloning》word教案
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。
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Para 1: The definition of cloning
It happens both in _p_l_a_n_t_s__ and in _a_n_im__a_l_s. They can be cloned by _t_h_e_m_s_e_lv_e_s_ and _h_u_m__a_n_s_.
Natural clone
Man-made clone
5
Para 2: The major uses and procedures of cloning
1. How many major uses do cloning have? Firstly, …commercial… Secondly, …research…
T
10
discussion Suppose human cloning
is permitted by law, would you like to clone yourself? And why?
11
About Dolly the sheep
Encouraging news: Dolly developed __n_o_r_m_a_l_ly__. Disturbing news:
Dolly lived for six and a half years, half the length of the life of the original one.
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.
1
in 1996 cloned sheep in 2001 cloned cattle In 2002 cloned rabbits and cats
In 2005 cloned dogs
2
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.
3
Para 2 The major 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
8
Para 4: The impact of Dolly
The word “controversial” in Para 4 probably means ____B____. A. complicated B. arguable C. important
9
Para 5: People’s reaction to cloning
2. How many female sheep participate in the cloning of a new sheep? 3
3. When was the cloning of Dolly the sheep born? Fra bibliotek9966
7
Para 3: The problems of Dolly