选修8 Unit 2 Cloning Reading
Unit2CloningSectionⅠWarmingUpReading_Pre_reading课件新人教版选修8
plant. _____________________________________________________ Natural clone is one that occurs from the “parent” in a _____________________________________________________ natural form of cloning without human help. _____________________________________________________ Manmade clone is one produced through human _____________________________________________________ intervention (介入)． __________________
“Where these new mutations actually come from is still a mystery，” said Professor Harberd. “They may arise during the regeneration process itself or during the cell divisions in the donor plant that gave rise to the root cells from which the regenerate plants are created. We are planning further research to find out which of these two processes is responsible for these mutations. What we can say is that nature has safely been employing what you might call a ’cloning’process in plants for millions of years, and that there must be good evolutionary reasons why these mutations are introduced.”
选修8Unit2 Cloning
Look at the pictures and discuss which ones are natural clones and which ones are man-made clones .
The plant produces its own runners.
⑥ The effect of Dolly
Second reading
1. What are the two major uses of cloning ?
The first use is to produce commercial quantities of plants ; the second one is to research on new plant species and medical research on animals.
Para 1 Para 2 Para 3 Para4 Para5
① Dolly’s problem and death ②What is cloning? ③ Two major uses of cloning
④ Arguments brought by Dolly ⑤The procedure for human clonin
Sheep B are joined using electricity. ⑥ The egg cell from Sheep A is removed a nucleus.
The order:_⑥___ _③___ _⑤___ __①___ _④___ _②__
Third reading
1.True or False questions. ①Dolly the sheep was the first successful
选修八 2.1《Unit 2 Cloning》
1. straightforward 5. procedure
2. arbitrary
6. I object
3. commercial
7. will forbid
4. Are you in favour
of
Checking answer – III ( 3ms )
_________ than the donor animals
younger
_E___v_i_l__ _____l_e__amdayewrant to clone
themselves.
produce Cloning plants can ______
_________ of similar _________ ______
another animal and plant. 2.Cloning has _t_w_o__m_a_j_o_r___ uses.
3.The _p_r_o_b_le_m__s_ of Dolly.
4. The _e_ff_e_c_t___ of Dolly.
5. It is _f_o_r_b_id_d__en__ to clone human beings.
F
2.Gardeners can make a lot of money by cloning
plants.
T
3.Cloning animals is as complicated as cloning
plants.
F
4. Dolly the sheep was the first successful
Checking answer – I (2ms)
选修八unit2reading
Why is it easier to make commercial plant clones than animal clones?
Cloning plants is straightforward w hile cloni ng ani mals is ver y complicated
Reading
www,
evil leaders hoping to clone themselves
religious leaders raised moral
Disadvantages
questions animllness
of older animals animal clones may die younger than donor animals
natural cloning examples
cactus
pendulum orchid (吊兰)
natural cloning examples
strawberry
twins
man-made cloning examples
the first cloned cat
Dolly the sheep
www,
using cloning to cure serious illnesses help save endangered animals
Advantages
produce plants of similar quality for sale
cloning plants can be useful for research on new plant species
cloning is used in an evil way it can cause much trouble. Therefore, we should use cloning in a correct way.
人教版选修八unit 2 cloning Reading公开课共25页
1
0
、
倚
南
窗
以
寄
傲
，
审
容
膝
之
易
安
。
46、我们若已接受最坏的，就再没有什么损失。——卡耐基 47、书到用时方恨少、事非经过不知难。——陆游 48、书籍把我们引入最美好的社会，使我们认识各个时代的伟大智者。——史美尔斯 49、熟读唐诗三百首，不会作诗也会吟。——孙洙 50、谁和我一样用功，谁就会和我一样成功。——莫扎特
文 家 。汉 族 ，东 晋 浔阳 柴桑 人 （今 江西 九江 ） 。曾 做过 几 年小 官， 后辞 官 回家 ，从 此 隐居 ，田 园生 活 是陶 渊明 诗 的主 要题 材， 相 关作 品有 《饮 酒 》 、 《 归 园 田 居 》 、 《 桃花 源 记 》 、 《 五 柳先 生 传 》 、 《 归 去来 兮 辞 》 等 。
人教版选修八unit 2 cloning Reading 公开课
6
、
露
凝
无
游
氛
，
天
高
风
景
澈
。
7、翩翩新 来燕，双双入我庐 ，先巢故尚在，相 将还旧居
后
名
，
于
我
若
浮
烟
。
9、 陶渊 明（ 约 365年 —427年 ），字 元亮， （又 一说名 潜，字 渊明 ）号五 柳先生 ，私 谥“靖 节”， 东晋 末期南 朝宋初 期诗 人、文 学家、 辞赋 家、散
选修8unit2 cloning导学案
编制：袁芳妮班级------------姓名-------------教学目标1.语言目标：学习有关clone(克隆）的词汇和短语。
2.能力目标：培养提高学生的阅读理解能力。
3.情感目标：通过本文的学习，激发学生勇于求知，探索科学奥妙的积极学习态度。
教学重点训练skimming,scanning,careful reading 等阅读技巧，并以此指导阅读。
同时让学生了解高考英语阅读题的试题类型，提高做题能力。
教学难点提高学生科技说明文的阅读能力以及对事物的客观评价能力。
预习案:课前要求学生自主学习本单元的词汇.探究案Step1.Lead-in.(导入）通过多媒体展示图片直接导入。
Step2.Pre-reading.（读前）给学生介绍科技说明文的文体特点，并提供相应的的应对措施。
Step3.Reading(阅读）Task 1.Skimming(略读）Match the main idea with each paragraph. Para.1 A.Two major uses and the procedure of cloning. Para.2 B.The definition of cloning.Para.3 C.The effect of cloning in society.Para.4 D.The attitude towards cloning.Para.5E.The problem of Dolly the sheep.Task 2 Scanning: True or false questions1.Cloning means making a copy of an animal or a plant.（）2.Gardeners can make a lot of money by cloning plants.（）3.Cloning animals is as complicated as cloning plants.（）4.Dolly the sheep was the first successful clone of a mammal.（）5.Natural clones happen in animals as well as in plants. （）Task 3Reading for details:Choose the right answer according to the text.1.Dolly the sheep______.A. looked exactly like the sheep that provides the egg.B. was the exact copy of the sheep that provides the nucleus.C. looked like the sheep that gave birth to it.D. had the characteristics of all three sheep.2.The sheep that donated the somatic cell most probably lived ________years.A. 3B. 6C. 9D. 133.What is the main idea of the text ?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 aboutits future.4. The word “controversial”in para 4 probably means__________.A. complicatedB. arguableC. importantD. necessary5.What is the writer’s point of view in this reading passage?A. Positive.B. Negative.C. Objective.D. Indifferent.Step 4 Post-reading(读后）Learn about the important events in animal cloning history. Homework:（课后作业）1.have a debate on the topic after class.2.Finish exercise 2 on page13.Reflection(课后反思）。
选修8unit2教案
Step3 Practiceclause.In the third sentence, the underlined part is used as object of the verb "know". It is the object clause.Go on with the Activities 2-4. Then check the answers with the students.Revise the noun clause and do workbook exercises. Noun clause :subject clause ,object clause , predicative and appositive clause.围绕教学方式、学习方式、课程资源的开发与利用、成功与不足……进行反思教 学 反 思Step4 homeworkKeys: procedure, controversial2. Read through the passage and find the main idea of each paragraph. 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. Detailed-reading1. Read the text carefully and fill in the blanks.Keys: normally, original, much older animal 2. Choose the best answer.1. As for the cloning procedure of Dolly the sheep, all of the following are true EXCEPT ____ ・A. the lamb is the clone of the donated cell from sheep BB. electricity is neededC. female sheep B provides an egg cellD. three female sheep are used2. From the last paragraph we know that ____ . A. cloning will come to an end because of objections B. cloned human beings will be produced in the near futureStep 2 While-r eadingC. many countries will use cloning in a wise wayD. all the research into human cloning will be forbidden Keys: C, C3. Write the letter "T" if the statement is true. Write "F” if it is false. 1) Cloning means making a copy of an animal or a plant. 2) Gardeners can make a lot of money by cloning plants. 3) Cloning animals is as complicated as cloning plants. 4) Dolly the sheep was the first successful clone of a mammal. 5) Natural clones happen in animals as well as in plants. Keys: F, I F, 1TReproductive cloning of animals is a for technology and farming as well asTherapeutic (治疗的)cloning is to produce a healthy copy of a s ____ person's tissue (肌肉组织)or organ for transplant in order to save the lives of those who would dtransplants from other people. The tissue or organ would have the sick person's original DNA.Keys: copy, animal, allowed, endangered, forbidden, countries, sick, die, technique,relyingFinish workbook exercises.Read through the passage and find the main idea of each paragraph. 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.围绕教学方式、学习方式、课程资源的开发与利用、成功与不足……进行反思Step3 Reproductive cloning is intended to produce a c ___ o f an existing aor a plant.ading for cloning eanimals. But reproductive cloning of human beings is specificallyStep4h by law in most cwithout it. This twould be many times better than ron organPost-reomewo rk板 书 设 计教学Step3 Practiceobject clause.Go on with the Activities 2-4. Then check the answers with the students.Noun clause :subject clause ,object clause , predicative and appositive clause.Step4homew Revise the noun clause and do workbook exercises.ork围绕教学方式、学习方式、课程资源的开发与利用、成功与不足……进行反思教学反思Step3Grammar 2:同位语从句There is only one way of improving your English, that is, to practice more. Altogether Dolly had lived for six years, half the length of the life of the original sheep. 同位语从句与定语从句在使用中常常混淆，我们可以从以下几个方面区别它们: 同位语从句说明的名词大都是抽象名词；定语从句所修饰、限定的名词或代词有 抽象的也有不抽象的。
高中英语 Unit 2 Cloning reading cloning课件1 新人教版选修8
5.Natural clones happen in animals
well as in plants.
T
美国克隆狂人 扎沃斯
Dolly and the Father of Dolly –Ian Wilmut
( 伊恩·威尔姆 ) 1996
意大利狂人医生: 安蒂诺里
冒死也要克隆人的 科学家:布瓦瑟利耶
Man-made clone
Man-made clone is one
produced through human intervention(介入) .
BACKGROUND:
• AD5000：grain seed selection （谷物选种）
• In 1952：Clone tadpole（克隆蝌蚪） • In 1972： Gene replication （基因复制） • In 1978： 1st test-tube baby（试管婴儿） • In 1997：1st mammal Dolly（多利羊） • In 2000：Clone monkey
F
2.Gardeners can make a lot of money
by cloning plants
T
3.Cloning animals is as complicated
as cloninp was the first
successful clone of a mammal. T
CLONING
•Expository writing: 说明文
definition定义
uses 用途
future前景
cloning
impact反响
level水平 procedure原理
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
Reading– Where is it leading us?
课前备好 :课本、提纲
exact cutting twin identical commercial
procedure nucleus somatic cell embryo carrier
fate make corrections object to objection have an impact (on)
Para.1 Para.2 The impact of Dolly the sheep. Controversy brought by Dolly the sheep.
Para.3
Para.4 Para.5
The definition of cloning
The birth and death of Dolly. The major uses and the procedure of cloning Dolly the sheep.
straightforward
complicated
cast
cast down
medium
the media
undertake
pay off
altogether
arbitrary
conservative
forbid,forbade,fe you for or against this idea?
Many governments forbade research 2 All the research into human beings will be into human beings. forbidden.
3 Some countries will use cloning in a wise way.
Checking True or False
1.Cloning means making a copy of an animal or a plant. F 2.Gardeners can make a lot of money by cloning plants. T 3.Cloning animals is as complicated as cloning plants. F 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
2). When was the cloning of Dolly the sheep born? in 1996
Explaining normally At first, the fact that Dolly developed ______ in a natural way was __________. encouraging Para 3: The problems of Dolly
Natural clone Man-made clone
Explaining Para 2: The major uses and procedures of cloning
1).How many major uses do cloning have? Firstly, …commercial… Secondly, …research…
Explaining
The writer’s attitude towards cloning is objective. How do you know? Because the writer doesn’t state any personal opinion about cloning. What is the style of the article? A. Narration B. Argumentation C. Exposition The article is in the third person and in formal and factual language. It gives different points of view and doesn’t persuade the reader to a particular point of view. It leaves the reader to make up their own mind.
2.The answers to the comprehending:
BCDDC
Presenting ★ What are the advantages and problems of cloning? Advantages:
1. Medical cloning could produce cures for serious illnesses in humans. 2. Cloning plants can produce plants of similar quality for sale. 3. Cloning can help save endangered animals. 4. Cloning could help families who cannot have children of their own.
Problems
1. Animal clone may develop the illness of older animals. 2. Animal clone may die younger than the donor animals. 3. Evil leaders may want to clone themselves. 4.It might bring back to life creatures that might harm us. 5. We might be cloned without our knowledge. 6. There are moral objections to cloning human beings.
Explaining Para 4: The impact of Dolly
The word “controversial” in Para. 4 probably means____. A. complicated B. arguable C. important D. simple
Explaining Para 5: People’s reaction to cloning True or false: 1 People feared that Cloned Hitler would do harm to the world.
Explaining
Detailed information about the text
Para 1: The definition of cloning 1) What is cloning ? Cloning is a way of making an exact copy of another animal and plant. 2) It happens both in animals _________ and in_______. plants They can be cloned by ____________ humans themselves and __________.
that Later, the news _____she lived for six and a half years, orginal one was half the length of the life of the ______ __________. disturbing
Finally, the problem that occurred to the scientists was shorter than the original that a cloned animal lives_____________ one.
Discussing 1. Check the answers on the handout. 2. Discuss the following question. ★ What are the advantages and problems of cloning?
Presenting
1. Match the main idea with each paragraph.