选修8 Unit 2 Cloning,Look at the pictures and discuss which ones are natural clones and which ones are man-made clones .,She was reported on TV and major papers,Cloning , where are you leading us?,1. What is cloning?,It is a way of making an exact copy of another animal or plant.,First reading,2.Whats the style of the passage ? A.narrative (记叙文) B.argumentative(议论文) C.explanatory(说明文),3.Can you put the topic sentences into paragraphs that they belong to? (Attention: one of them belongs to nowhere.), Dollys problem and death What is cloning? Two major uses of cloning The effect of Dolly,The procedure for human cloning, Arguments brought by Dolly,Para 1 Para 2 Para 3 Para4 Para5,What is cloning?, Two major uses of cloning, Dollys problem and death, The effect of Dolly, Arguments brought by Dolly,The procedure for human cloning,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.,2. Is cloning plants the same with cloning animals ?,A. Yes , they are the same with each other. B. No, cloning plants is straightforward but cloning animals is more complicated.,3.Give a right order of cloning Dolly s procedure,The cell divides and grows into an embryo. The lamb is the clone of the donated 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:_ _ _ _ _ _,1.True or False questions.,Dolly the sheep was the first successful clone of a mammal. Some countries like China didnt stop human cloning research. a cloned animal usually dies earlier than the original one. Evil leaders can clone themselves to abtain their ambitions.,T,F,T,F,Third reading,2. What is the writers attitude toward cloning in this passage? A. The writer is against cloning. B. The writer is in favor of cloning. C. The writer does not state any personal opinion about cloning.,3. Whats the affect of cloning ?,On the one hand ,it opened everybodys eyes to the _of using cloning to cure_and even produce _; On the other hand , Its appearance raised a storm of _ and had a great impact on the _ and public_.,serious illnesses,possibility,human beings,objections,media,imagination,4.What are the advantages and disadvantages of cloning ?,1.Cloning plants can produce _ _ of plants . 2. Cloning plants can be useful for research on new _ species. 3. Medical cloning could produce _ for serious illnesses.,advantages,commercial,quantities,cures,plant,disadvantages,1. Animal clones may develop the _ of older animals.,2. Animal clones may _younger than the donor animals.,3. Evil leaders may want to _ themselves to attain their ambitions.,4. Religious leaders raised _ questions about human cloning.,illnesses,die,clone,moral,As one coin has two sides, everything has _ aspects(方面). Cloning has both _and _ aspects ._, if cloning is used in a correct way ,it can bring lots of convenience to us. _, if cloning is used in an evil way ,it can cause much trouble. _, we should use cloning in a correct way.,two,good,bad,On the one hand,On the other hand,Therefore,5.What can we learn from the passage ?,Discussion,Lets make a discussion about whether cloning should be allowed in China ? Give your reasons.,Possible sentence patterns: (1)Peoples views vary from person to person. (2) hold the view that./in favor of (3)object to the view that/ are against (4)I cant agree with because,Consolidation,The passage mainly tells us what c_ is , the a_ raised by Dolly the sheep and scientists are not sure about its f_.,loning,rguments,uture,One coin has two sides and we should treat things in a wise way.,教师寄语,Homework:,Write a short passage about what you discussed in class.,