（同课异构课件）选修8-Unit2-Cloning(Reading)课件.ppt

1、Cloning: Where is it leading us?CloningUnit 2Reading :Designer: Xiao Ziquan播放视频Cloning is a way of making an exact copy of another animal and plant.What is cloning?Do you know something about Dolly? Dolly the sheepShe was while the others were born .Dolly was a _ sheep.clonedHow does Dolly differ fr

2、om other sheep?clonednaturally1.Match the main idea with each paragraphA.Two major uses and the procedure of cloning.B.Cloning is a way of making an exact copy of another animal or plant.C.The effect of Dolly the sheep.D.It is forbidden to clone human beings.E.The problem of dolly the sheep.Para.1Pa

3、ra.2Para.3Para.4Para.5_Fast reading2.Whats the main idea of the passage? The passage tells us that animal cloning raised and scientists are not sure about its .argumentsfuture3.Whats the writing style?A.Expositive(说明性的说明性的)B.ArgumentativeC.NarrativeD.Descriptive2.Whats the main idea of the passage?C

4、loning is a way of making an exact copy of another animal and plant.What is cloning ?It happens both in _ and in_. They can be cloned by _ and _.plantsanimalsthemselveshumansNatural cloneMan-made clonePara 1 The definition of cloningTask Two Detailed reading1.The word “straightforward” means _.A.unc

5、omplicated B. honest C. frank D. difficultPara 2The major uses and procedures of cloning 2.When was Dolly the sheep born? What qualities made the scientists pay off?1996. It was their determination and patience that paid off. The cell divides and grows into an embryo.The lamb is the clone of the don

6、ated cell from Sheep B. A nucleus is taken out of Sheep Bs somatic cell .The embryo is put into female Sheep C.The egg cell from Sheep A and the nucleus from Sheep B are joined using electricity. The egg cell from Sheep A is removed a nucleus.The order:_ _ _ _ _ _How do scientists clone a sheep? Let

7、s give a right order of cloning Dolly s procedure At first, the fact that Dolly developed _ in a natural way was _.Later, the news _she lived for six years and a half, half the length of the life of the _ one was _.Finally, the problem that occurred to the scientists was that a cloned animal lives_

8、than the original one.Para 3The problems of Dollynormallyencouragingorginalthatdisturbingshorterread freelyThe 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 live _than the original one.i

9、llnessesshorter Para 3It means the original sheep2.The word “controversial” in Para 4 probably means :_. A. complicated B. arguable C. important D. traditionalPara 4The impact of Dolly1.Its appearance raised and the media and public imagination.a storm of objectionshad a great impact onTrue or false

10、:1People 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.Para 5 Peoples reaction to cloningMany governments forbade research into human beings. the author does not state any personal opinion

11、about cloning. A. positive B. negative C.neutral D. unknownThe writers attitude towards cloningBecause_根据课文内容语法填空Cloning has always been with us and is here to stay.Its a way of making an 1.(exactly) copy of another animal or plant.Cloning has two major uses.Firstly,gardeners use it all the time to

12、produce commercial quantities of plants.Secondly, its 2. _(value) for research on new plant species and for medical research on animals.Cloning animals is a difficult task 3. (undertake). At last the determination and patience of the scientists paid 4. in 1996 with a breakthroughthe cloning of Dolly

13、 the sheep.exact valuable to undertake off SummaryThe fact 5. she seemed to develop normally was very encouraging.Then came the disturbing news that Dolly had become 6.(serious) ill and she only lived six and a half years.Dollys appearance raised a storm of 7. (object) and had a great impact on the

14、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.that seriously objections themselv

15、es forbidden while/but Practice activity: Are you in favor of the human cloning or against it? Why？正正方方反反方方 Team A: I would like to suggest that _ .so in my opinion ,human cloning is good. Team B: I dont agree with you . firstly, from the passage we know that_. Secondly_,Thirdly ,_. So I think the r

16、esearch into human cloning should be forbidden .Useful patterns:As a coin has two sides, everything has two aspects. On the one hand, if the cloning is carried out in a correct way it can bring many benefits to us. Such as: curing serious illnesses and being used to produce commercial quantities of

17、plants. On the other hand, if the cloning is performed in an evil way it can cause many problems: such as moral questions. Each coin has two sides and we should treat things in a wise way.教师寄语教师寄语Write a passage titled Is cloning good or bad? Your passage should include the following：1)What is cloning2)Advantages of cloning 3)Disadvantages of cloning4)Your opinion of itHomeworkHomework