Unit2《Cloning》选修8.ppt

Unit2 cloning,Reading,The important events in animal cloning history,In 1952 tadpole (蝌蚪） was cloned . It is the first animal to be cloned,In 1963 , an Asian carp(鲤鱼） was cloned . Ten years later, a Chinese scientist named Tong dizhou cloned a European carp.,1978年7月25日,世界上第一个试管婴儿路易丝布朗在英国出生,路易丝布朗现已33岁,In 1996, a sheep called Dolley was born. It is the first mammal to be cloned. It is considered to be the greatest success in the development of cloning.,A macaque （猕猴）was cloned in 2000. Later scientists cloned many monkeys .,2000年人类近亲被克隆 美国俄勒冈的研究者用与克隆多利羊截然不同的方法克隆出猴子Tetra,Mules (骡子） have no ability to give birth to a baby. A mule was cloned in 2003. It is the first animal which lack fecundity (生育能力）to be cloned.,2001年克隆人被提上日程,Cloning: Where is it leading us?,Cloning,Unit 2,Reading :,What do you want to know about cloning?,1. 2. 3. ,Skimming（略读）:match the main idea with each paragraph（段落大意连连看）,A.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.1,Para.2,Para.3,Para.4,Para.5,_,_,(meaning),_,_,_,Skim the following passage and match the paragraph with the correct sentence.,Para 1 A. The problems of Dolly Para 2 B. The two major uses of cloning Para 3 C. The attitudes towards cloning Para 4 D. The definition of cloning Para 5 E. The effect of cloning in society,Scan the text to find out the answers to the following questions.,Scanning,1.Dolly the sheep_. A. looked exactly like the sheep that provides the egg B. was the exact copy of the sheep that provides the nucleus C. looked like the sheep that gave birth to it D. had the characteristics of all three sheep,Choose the best answer.,2.The sheep that donated the somatic cell most probably lived _years. A. 3 B. 6 C. 9 D. 13,3. Which of the following is not an advantage of cloning? Cloning can be used for medicine purposes. Large quantities of plants can be produced by cloning. Cloning can help keep animals from becoming extinct. Famous persons who have passed away can be cloned.,4.The main idea of the text : A. Animal cloning is very valuable and can benefit the world. B. Animal cloning could be misused by bad people so it must be forbidden. C. Animal cloning is well developed because Dolly the sheep was born. D. Animal cloning raised arguments and scientists are not sure about its future.,5. The word “controversial” in para 4 probably means _. A. complicated B. arguable C. important D. necessary,6.The writer s point of view in this reading passage: Positive. Negative. Objective. Indifferent.,True or false: 1.Cloning means making a copy of an animal or a plant. ( ) 2.Gardeners can make a lot of money by cloning plants. ( ) 3.Cloning is something that has been developed quite recently. ( ) 4.Dolly the sheep was the first successful clone of a mammal. ( ) 5.The cloning of Dolly the sheep succeed because the scientists were determined and work hard with patience. ( ),F,T,F,T,T,冒死也要克隆人的法国科学家:布瓦瑟利耶,恐怖分子头目本拉登,Animal clones may develop the illness of older animals.,Medical cloning could produce cures for serious degenerative illnesses in humans.,Animal clones may die younger than the donor animals,Cloning plants can produce plants of similar quality for sale,Evil leaders may want to clone themselves,Cloning plants can be useful for research on new plant species.,There are moral objections to cloning human beings,Cloning can help save endangered animals.,Clone can make a woman who cant get pregnant(怀孕的） have a child.,At present our country lacks organs(器官）. The cloned man can transform his organs to his original one(本体),They have the same face. People are no longer special to each other.,Our cloning technology is not perfect. Some cloned babies have deformity(畸形）from birth.,Debate:Are you for or against cloning human beings(谁说谁有理）,Important sentences:,1. Cloning plants is straightforward while cloning animals is very complicated. 2. But at last the determination and patience of scientists paid off in 1996 with a breakthrough. 3.Cloning scientists were cast down to find that Dolly illnesses were more appropriate to a much older animal.,4.On the other hand, Dollys appearance raised a storm of objections and had a great impact on the media and public imagination. 5.It suddenly opened everybodys eyes to the possibility of using cloning to cure serious illnesses and even to produce human beings. 6.Although at present human egg cells and embryos needed for cloning research are difficult to obtain. 7.However, scientists still wonder whether cloning will help us or harm us and where it is leading us.,完成句子,The naughty boy_ ( 被禁止离开教室）as a punishment. (forbid) He_(非常沮丧） by the failure of the experiment.(cast) 3. The task_(很难承担）. (undertake) Drugs_(对青少年有很大影响）.(impact),was forbidden to leave the classroom,was cast down,is difficult to undertake,have a great impact o