Unit 3 Science and nature课件19（牛津高中必修5）.pptVIP

Module 5 Unit 3Science and nature Welcome to the unit Step 1 Lead-in Four hundred years ago Chinese people had created the cloned images in The Journey to the West, but now it has become a reality in life. Science is developing so fast that it is beyond our imagination. 超乎我们的想象. [i’m?d?i’nei??n] What do you know about cloning? cell [sel] 细胞 Cloning is producing an exact copy(复制品) of a plant or an animal using its cells(细胞). Step 2 Picture-presenting Hello, I’m Dolly. I am the world’s first cloned mammal. [‘m?m?l] 哺乳动物 sheep I look just like my brother, that’s because I am a clone. mule I was created using a cell from an adult cat. [‘?d?lt] 成年的 [kri’eit] 创造 We are five cloned female pigs and we were born on Christmas Day 2001. We are a pair of new-born cloned calves from Japan. / ka:vz / 小牛犊 I am the first cloned monkey and I was born at a research centre in the USA. Cloned Animals! Step 3 Discussing Oral Task One: If you were a scientist, what would you want to clone? Why? Discuss with your classmates. endangered animals grains human Oral Task Two: If you were cloned one day, how would you feel? Why? Try to describe Bush’s feelings The new kind of technology has caused widespread discussion. It can help cure many diseases, save lots of people’s lives and even prevent some endangered animals from dying out. On the other hand, if it is used to clone human beings, that is against the laws of nature and it will bring a lot of social problems. Some countries have passed some laws to ban the cloning of human beings. Conclusion Today our class had a discussion about whether the governments should pass laws to prohibit human cloning. Some students think that the governments should, for… However, some other students think it necessary to prohibit…, for… In my opinion, …