新人教选修八UnitUsingLanguagePPT学习教案

1、会计学1新人教选修八新人教选修八UnitUsingLanguageAnswer the following questions:1.Have you ever seen the film Jurassic Park? Do people like this film? What animals do you see in the film? Are they real dinosaurs? Warming up ( 4ms )第1页/共25页Please enjoy some pictures about dinosaurs. 第2页/共25页霸王龙霸王龙tyrannosaurus第3页/共2

2、5页剑龙剑龙stegosaurs第4页/共25页角龙角龙 ceratopsids第5页/共25页雷龙雷龙 brontosaurus第6页/共25页翼龙翼龙pterodactyl第7页/共25页第8页/共25页2.Do you like dinosaurs? Can you see them in our real life? Why?Warming up ( 4ms )第9页/共25页3. Do you think it is possible to clone dinosaurs? If not,why? If yes, do you think thats good for human b

3、eings? Why?Warming up ( 4ms )第10页/共25页Read the text, then tell the following sentences are true or false. ( Students can discuss in pairs. )1. Scientists are still experimenting with cloning mammals because they think it can make money.2. The animals that have disappeared from the earth, like dinosa

4、urs, can be brought back to life through cloning.3. If we can clone any extinct animals, we should let them live in a zoo.FFFReading - I scanning ( 5ms )第11页/共25页主旨大意主旨大意第12页/共25页细枝末节细枝末节A第13页/共25页第14页/共25页第15页/共25页推理判断推理判断第16页/共25页Give some reasons why it is either impossible or unsuitable to clone

5、 extinct animalsReason 1:Reason 2:Reason 3:You need perfect DNTThere is not enough diversity for cloned animals to overcome new diseases.It would be unfair to clone any extinct animals if they would have to live in a zoo.第17页/共25页Advantage of diversity Disadvantage of diversityDiversity in a group o

6、f cloned animalsIf there is a new illness some of these animals may die ,but others will survive and passed on the ability to resist that disease to their children.They would all have the same arrangement of genes and so they might all die of the same disease.第18页/共25页Reading - II Detail reading ( 6

7、ms )Read the text, then answer the following questions. ( Students can discuss in pairs. )1. Why shouldt you clone an extinct animal unless there is enough diversity in the group?2. Why is it wrong to clone an extinct animal if it would have to live in a zoo?3. Why cant you clone the DNA of animals

8、that have been extinct longer than 10,000 years?第19页/共25页1. Why shouldt you clone an extinct animal unless there is enough diversity in the group? There will not be enough genetic variation (遗传变异遗传变异)in the group to be able to resist new illnesses.第20页/共25页2. Why is it wrong to clone an extinct anim

9、al if it would have to live in a zoo? It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers.The zoo is not a natural environment for a wild animal.第21页/共25页3. Why cant you clone the DNA of animals that have been extinct longer than 1