2021-2022高中英语人教版选修8课件：UNIT 2 CLONING READING （一） .ppt

1、Unit 2 Cloning人教版 选修八Period 1 ReadingNatural clone is one that occurs in a natural form of cloning without human help.Man-made clone is one that produced through human intervention(介入).In pairs,look at these pictures and discuss which ones are natural clones and which ones are man-made.Explain how t

2、hey differ.discussionA strawberry plantGrowing new plantsTwinsDolly the sheepShe was cloned while the others were born naturally.Dolly was a _ sheep.clonedHow does Dolly differ from other sheep?ReadingListen to the tape and find out the main idea of each paragraph.Cloning is a way of making an exact

3、 copyof 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 cloning1.How many major uses do cloning have?Firstly,commercial Secondly,research2.When was the cloning of Doll

4、y the sheep born?Para 21996The major uses and procedures of cloningAt first,the fact that Dolly developed _ in a natural way was _.Later,the news _she lived for six years,half the length of the life of the _ one was _.Finally,the problem that occurred to the scientists was that a cloned animal lives

5、_ the original one.Para 3The problems of Dollynormallyencouragingorginalthatas long as/shorter than/longer thandisturbingshorter thanThe word“controversial”in para 4 probably means _.A.complicated B.arguable C.importantPara 4The impact of DollyTrue or false:1 People feared that Cloned Hitlers would

6、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 5Peoples reaction to cloningMany governments forbade reserch into human beings.the author does not state anypersonal opinion about cloning.A.Objective(be fair)B.Negative(b

7、e against it)C.Positive(be in favor of it)The writers attitudetowards cloningBecause_Fill in the chart on Page 12 using the information from the text.Which is easier to clone,plant or animal?Because cloning plants is straightforward,but the cloning of animals is very complicated.DiscussionHomework1.

8、Translate the procedure of cloning Dolly the sheep into Chinese.2.Finish Ex.1,2,3,Page12.A strawberry plantThe new plants that grow from the runners are exact copies of the original plant.一株草莓依靠它沿地“爬走”的匍匐茎,一年内就能长出数百株草莓苗富贵竹插枝即活The gardener should cut the plant,then the cutting produce another new plant.TwinsThey are born naturally and identical in sex and appearance.