Unit 2 第4课时 Reading for Writing（PPT）-【全效作业本】2022-2023学年高中必修第二册英语同步课件及教参（人教版2019）

《全效作业本》 英语 必修 第二册 [RJ] 话题阅读A 书面表达B 第4课时　Reading for Writing Wildlife Protection Unit 2 《全效作业本》 英语 必修 第二册 [RJ] 话题阅读A 书面表达B Ⅰ.阅读理解 Passenger pigeons(旅鸽)were the most common birds in all of North America in the 1800s.It was common to see large groups of passenger pigeons—groups that made a sound like a storm.But today，they are extinct because of human behaviour.Now，some scientists want to bring passenger pigeons back to life by using new technology and scientific ideas.They call this process de－extinction. 《全效作业本》 英语 必修 第二册 [RJ] 话题阅读A 书面表达B De－extinction has not happened yet.It is still just an idea.The process of de－extinction is not easy.First，scientists must collect DNA from the bodies of extinct animals.Then they will put it in the eggs of similar animal species.When these animals become adults，they will have babies.And these baby animals will have the DNA of the extinct animals. Scientists believe it is possible to bring back passenger pigeons and many other animals.However，not everyone thinks this is a good idea. 《全效作业本》 英语 必修 第二册 [RJ] 话题阅读A 书面表达B Stuart Primm is the world's leading expert on modern animal extinction.He believes that bringing extinct animals back to life is bad for the earth.On the one hand，these animals no longer have a safe place to live.On the other hand，they could cause other animals to die. Many other scientists do not agree with Stuart Primm.Stuart Brand，a writer and scientist，is one of them.He believes de－extinction is good for many reasons. 《全效作业本》 英语 必修 第二册 [RJ] 话题阅读A 书面表达B “The current generation of children will experience the return of some unusual animals in their lifetime.It may be part of what defines their generation and their attitude to the natural world.They will take their parents to zoos to see the growing populations of passenger pigeons，and maybe even dodo birds(渡渡鸟)．This will provide a good deal of money for zoos busy with extinct species restoration(恢复)．Humans killed off a l