UNIT 9 Section Ⅰ TOPIC TALK & LESSON 1（Word教参）-【优化指导】2022-2023学年新教材高中英语选择性必修第三册（北师大版2019）

单元话题导入 [品读话题短文] In recent years，several countries，including① Canada，Argentina，and China，have relaxed agriculture gene­editing laws，but the practice is still highly regulated within the European Union.“There are legitimately② held concerns③ about the potential④ for gene editing to consolidate power inequalities in the food supply chain，ethical concerns，particularly about usage in animals，and the potential to facilitate greater intensification⑤ of farming，which could harm the environment，”Rose said. There are broadly two methods by which scientists directly alter the genomes of plants and animals. One is by inserting genes from one organism into another，so­called genetic modified organisms，or GMO.An example of⑥ this is the Piper Plus potato developed by UK scientists，which is resistant to⑦ blight thanks to a gene from a species of wild potato and two genes from American black nightshade. The second technique involves⑧ gene­editing systems like CRISPR，through which scientists tweak an organism's existing genome without adding any genes. EU regulations currently group both GMOs and gene editing together. In a departure from EU standards，the UK is initially looking to loosen regulations on gene editing. There has been longstanding debate about⑨ the potential unintended consequences of GMOs since the early 1990s，when the term “franken­food” first appeared in the media，and some campaigners are fearful of⑩ further deregulation⑪.But the government says the new legislation⑫ would allow for genetic changes that “could have occurred naturally，or could have been created using traditional breeding”．Pat Thomas，who is director of the pressure group Beyond GM，called these criteria “poorly defined，scientifically unclear，and highly disputed”． [背记话题词块] ①including prep.包括 ②legitimately adv.合理地 ③concern n．担忧，关心v.关于；使担心 ④potential n．可能性；潜力adj.潜在的；可能的 ⑤intensification n．加剧；强化 ⑥an example of 一个……的例子 ⑦be resistant to抵抗…… ⑧involve v．包含 ⑨debate about关于……的讨论 ⑩be fearful of害怕 ⑪deregulation