选修8Unit2CloningReading公开课课件PPT学习教案

1、会计学1Natural clone orMan-made clone？Dolly the sheepA strawberry plantGrowing new plantsTwins 第1页/共27页is one that occurs in nature. A natural clone第2页/共27页 is one that is produced through human intervention.(人类介入）人类介入）A man-made clone第3页/共27页Dolly the sheepShe was while the others were born .How does

2、Dolly differ from other sheep?clonednaturally第4页/共27页Skim the passage and get the main idea of each paragraph.Para 1Para 2Para 3Para 4Para 5The _ of cloning The two major_ and the_ of cloningThe _of DollyThe _of cloning in societyThe _towards cloningusesproblemseffectproceduredefinitionattitudes第5页/

3、共27页 The passage tells us that animal cloning raised and scientists are not sure about its .argumentsfutureWhats the writing style?A. Expositive(说明性的说明性的)B. Argumentative（议论性的）（议论性的）C. Narrative（叙事性的）（叙事性的）D. Descriptive（描写性的）（描写性的）Whats the main idea of the passage?第6页/共27页 Cloning happens both in

4、_ and in_. They can be cloned by _ and_.plantsanimalsthemselveshumansNatural cloneMan-made clonePara 1 The definition of cloning第7页/共27页1.The word “straightforward” means _.A.uncomplicated B.honest C.frank D.difficultPara 2The major uses and procedures of cloning第8页/共27页The determination and patienc

5、e of the scientists paid off. (L9)第9页/共27页3.The lamb is the clone of the cell from sheep B because .A. it provides the egg cellB. it gives birth to the lambC. it provides the nucleusD. it is a female sheep第10页/共27页产产出出有核卵细胞有核卵细胞无核卵细胞无核卵细胞体细胞体细胞取出细胞取出细胞核核用电融合用电融合细胞细胞代孕母羊代孕母羊细胞分裂形成胚胎细胞分裂形成胚胎How to pro

6、duce a sheep（我也来当科学家（我也来当科学家）第11页/共27页True of false :1. Four female sheep participate in the cloning of a new sheep.2. Electricity is needed in the procedure.3. Sheep B provides a somatic cell for the clone.4. The lamb is the exact copy of sheep A.TFTF第12页/共27页Para 3The problems of Dollynormallyenco

7、uragingthe original sheepseriously illsix and a half years第13页/共27页The sheep that donated the somatic cell most probably lived _years.A. 3 B. 6 C. 9 D. 13Problems: Cloned animals may develop the_of older animals.Cloned animals may lives _ the original one.as long as / shorter than / longer thanillne

8、ssesshorter than 第14页/共27页Para 4The impact of DollynOn the other hand, Dollys appearance raised a storm of objections and had a great impact on the media and public imagination. Translation第15页/共27页Para 5Peoples reaction to cloningMany governments forbade research into human cloning.第16页/共27页Definit

9、ion2 major uses of cloningCloning procedureThe first successful animal cloneIt is a way of _ of another animal and plant.1)to produce _ 2)It is valuable for research on new _and medical research on _. Cloning plants _while cloning of animals is _The cloning of_, a _ in cloning tech.making an exact c

10、opycommercialstraightforwardbreakthroughplants speciesanimalsDolly the sheepcomplicated第17页/共27页The problems of Dolly the sheepThe effect of Dolly the sheep Encouraging news : It seemed to develop _ and produced _in a _way. Disturbing news:It lived for _ years, half the length of the life of the _ s

11、heep. Its appearance raised a storm of _and had a great impact on the _ and public_. It opened everybodys eyes to the possibility of using cloning to cure _and even produce _.objectionshuman beingsnormallynatural6originalimaginationserious illnessesmediaa lamb第18页/共27页Arguments on cloning Evil leade

12、rs hope to clone _. Religious leaders raised _ questions. Many governments _ research into human cloning. Some countries continued to _evidence of the abundant medical aid.moralforbadethemselvesaccumulate第19页/共27页 Cloning is a way of _ an exact copy of another animal or plant. Cloning has two _ uses

13、. Firstly, gardeners use it to produce plants. Secondly, it is _ for medical research on animals. Cloning plants is straightforward but the cloning of animals is more_. The procedure is difficult to _. In 1996, scientists succeeded in _Dolly the sheep. Then came the disturbing news that Dolly was il

14、l. _ Dolly lived for six years and a half , Dollys appearance raised a storm of _. Government became nervous and many _ research into human cloning. Scientists still _ whether cloning will help or harm us and where it is leading us.making major valuable complicated undertake cloning Altogether objec

15、tions forbade wonder Summary第20页/共27页Disadvantages of cloningAdvantages of cloning1. Animal clones may _ of older animals.1. Use it to produce _ of plants2. Animal clones may _ than the donor animals.3. Cloning can be valuable for _ . 3. _leaders may want to clone themselves.4. Religious leaders rai

16、sed .4. Cloning can help save _ Fill in the chartdevelop the illnesses lived shorterEvilmoral questionscommercial quantities2. Cloning plants can be valuable for research on _new plant species.medical research on animalsendangered animals.第21页/共27页We can conclude _A. Cloning is good for us.B. Clonin

17、g has two aspects.C. If cloning is used in a correct way it can bring many convenience to us.D. If cloning is used in an evil way it can cause much trouble.We should use cloning in a wise way !第22页/共27页As a coin has two sides, everything has two aspects. On one hand, if cloning is used in a correct way it can bring many convenience to us. On the other hand, if cloning is used in an evil way it can cause much trouble. Therefore, we should use cloning in a correct way.第23页/共27页 the autho