高二英语人教选修unitcloningreading.pptx

高二英语人教选修unitCloningReading第1页/共21页How much do you know about cloning?Quiz:第2页/共21页What's clone?Cloning is a way of making an exact copy of another animal or plant. It can be divided into natural clone and man-made clone. A natural clone is one that occurs in nature and a man-made clone is one that is procured through human intervention(介入，干预).Are the following clones the same? If not, what is the difference?第3页/共21页NO. The first two are man-made clones, the rest two are natural clones.第4页/共21页2001 cloning cattle第5页/共21页2002 cloning cats第6页/共21页2005 cloning dogs第7页/共21页ReadingCloning:Where is it Leading us?第8页/共21页Skimming2___Cloning has two major uses and successful clone.___(definition) Cloning is a way of making an exact copy of another animal and plant ___The effect of Dolly.___People’s reaction to cloning human beings.___The problems of Dolly.1453第9页/共21页Third reading -----"True" or“ False" 1. Cloning means making a child of another animal or plant. 2. Gardeners can make a lot of money by cloning plants. 3. Cloning animals is as complicated as cloning plants.FTF4. Dolly the sheep was the first successful clone of a mammal.5. Natural clones happen in animals as well as in plants.TT第10页/共21页Para 1 The definition of cloningIt happens both in ______ and in_______. It has two kinds:plantsanimalsNatural cloneMan-made cloneWhat is cloning ?Cloning is a way of making an exact copy of another animal and plant.Para 2第11页/共21页The major uses and procedures of cloning1.How many major uses do cloning have? Firstly, …commercial… Secondly, …research…2. When was the cloning of Dolly the sheep born?1996第12页/共21页Para 3The problems of DollyAt 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_____________ the original one.normallyencouragingthatorginaldisturbin