Unit 9 Human Biology Section Ⅲ Grammar —— 完成时 课件（共45张）+学案（含答案）
更新时间：2025-11-03
资源科目：英语
适应版本：北师大版（2019）
适应地区：全国
文档类型：zip
文档大小：545.5KB
文档来源：21世纪教育网
文档摘要：
Section Ⅲ Grammar —— 完成时 ①Natural cloning has been going on for generations. ②Gardeners have been using a form of cloning when they take a cutting from a plant ... ③For years， there had been attempts to clone animals artificially. ④...cloning primates has been proved to be “much harder”， and doing s...
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