高中英语第四册unit 3课件1

Welcome to the unit,-By Laura,Match the words with their correct meanings.,Revision,an important development human beings,breakthrough,mankind,help a woman or a female animal to give birth to a babyfeeling that you have little hope and will do anything to get what you want legally become the parents of somebody elses child,deliver,desperate,adopt,progress completely the results of an action,totally,consequences,advances,Unit 3 Science Versus Nature,Versus: used to show two teams or sides are against each othereg. It is France versus Brazil in the final.,Q1: Do you think there is conflict between science and nature?Q2: what kind of topics might be discussed in this unit?,clone: produce an extra copy of an animal or a plant from its cell,Do you know cloning? Look at the following pictures and say what you know about them.,Im the worlds first cloned mammal Dolly.,Dolly and its creator,the worlds first cloned mule Idaho Gem,I was born on 4 May 2003, look! Im growing stronger now.,My name is Cc, I was born in December 2002.,scientists created me with a cell taken from my mother Rainbow.,Our names are Noel, Engel, Star, Joy, and Mary. Can you recognize each of us?,We were born on 5 July 1998 in Ishikawa, Japan. And we were two years younger than Dolly.,My name is Andi, Im the first genetically modified monkey.,the cloned deer,cloned chicken,dog Snuppy created by Korean and American scientists,Look! Im having a birthday party.,Keke and Shuangshuang in China.,cloned rabbits born in Guangxi University.,Q1: can you identify the differences between the cloned animals and the normal ones?Q2: Can these cloned animals lead a normal life as normal ones?,Do you think human beings should be cloned? Work in pairs with your partner and discuss the questions below. 1. What effects do you think human cloning might have?,Discussion:,2. Do you think governments should pass laws to make human cloning legal or illegal? Why or why not?3. If you had a cloned brother or sister who looked exactly like you, how would you feel?,Cloning is a kind of biotechnology which aims to produce exact copies of a single gene or other segments of DNA. There have been disputes on the possible effect on its application in human society. Some people believe cloning technology can be used to cure the patients with genetic diseases and save a lot of peoples lives.,However, other people insist that cloning technology will cause ethical problem and violate human rights. No one can predict how negative the consequences could be. We have to take a cautious approach.,I dont think its a good idea to clone humans even though we might have the ability to do so in the future. There are different reasons if you approach the issue from different angles. From the ethical point of view, I believe the disadvantages of producing cloned animals outweigh the advantages. If not handled properly, great confusion could arise.,People could end up marrying their close relatives by mistake,if childless couples couples are allowed to clone themselves or adopt clones.Furthermore, if the technolog