Unit 9 Period Ⅰ TOPIC TALK & LESSON 1（课件）-【优化探究】2022-2023学年新教材高中英语选择性必修第三册同步导学案（北师大版2019）

返回导航 下页 上页 北师英语 选择性必修第三册 导语：随着科学技术的发展，基因以及基因技术对人类的影响是积极而深刻的。减少基因技术的危害，实现伦理对基因技术的导向作用，使之更好地为人类造福。 Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people. 返回导航 下页 上页 北师英语 选择性必修第三册 The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human lifespan can be prolonged. 返回导航 下页 上页 北师英语 选择性必修第三册 Gene technology can help people to give birth to more healthy and clever children. Some families have hereditary diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientist just need to find the wrong gene and correct it and a healthy child will be born. 返回导航 下页 上页 北师英语 选择性必修第三册 Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep; therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology. 返回导航 下页 上页 北师英语 选择性必修第三册 Period Ⅰ　TOPIC TALK & LESSON 1 返回导航 下页 上页 北师英语 选择性必修第三册 必备知识