Unit 4 Breaking boundaries 单元重点回眸-【金版新学案】2023-2024学年新教材高二英语选择性必修第二册同步课堂高效讲义教师用书（外研版2019）

单元重点回眸 1. cast v.　　　　　　　 选派(角色) 2. vital adj. 极其重要的 3. comrade n. 同志；朋友 4. tragic adj. 悲惨的，不幸的 5. combat v. 防止，抑制 6. clinic n. 诊所；门诊部 7. communist adj. 共产主义的 8. outbreak n. 爆发，突然发生 9. miracle n. 意外的幸运事；奇迹 10. altogether adv. 完全 11. ward n. 病房 12. compensate v. 弥补，补偿 13. mankind n. 人类 14. slave n. 奴隶 15. civilian adj. 平民的；百姓的 16. dedicate v. 致力于，献身于 17. endure v. 持续存在 18. portion n. 一部分 19. realistic adj. (目标、希望)能够实现的 20. minority n. 少数派；少数 单词拼写 1．Scientists continue to push back the boundaries (边界) of human knowledge. 2．Statistics (数据) show that the average number of births per woman has fallen from 4.9 in the early 1960s to 2.5 nowadays. 3．A nap can leave you feeling refreshed and more ready to tackle (处理) the task at hand. 4．(2020·全国卷Ⅰ)Since our twins (双胞胎) began learning to walk，my wife and I have kept telling them that our sliding glass door is just a window. 5．It was with sincerity and faithfulness that we created a harmonious (和谐的) atmosphere. 6．General Powell predicted that in the future it might even be possible to stage joint (联合的) military exercises. 7．He mounted (登上) the platform and addressed the crowd. 1．assist v．协助，帮助→assistance n．帮助→assistant n．助手adj.助理的 2．specialist n. 专家→specialize v. 专攻；专注于→special adj. 特别的；专门的 3．infectious adj.传染性的→infect v．传染→infection n．传染 4．devotion n．奉献→devote v．奉献；致力于→devoted adj.挚爱的；忠诚的 5．civil adj.公民的，国民的→civilian adj.平民的，百姓的 6．union n．联邦→unite v．联合；团结→united adj.联合的；统一的 7．division n．分歧，分裂→divide v．分开 8．liberty n．自由→liberate v．解放→liberation n．解放 9．nobly adv.高尚地，崇高地→noble adj.崇高的；高尚的 10．influential adj.有影响力的→influence n．& v．影响 11．rewarding adj.值得做的；有意义的→reward n．报酬；奖金 vt.酬劳；奖赏 用所给词的适当形式填空 1．As an assistant ，she always assists the manager in dealing with problems. So the manager thinks highly of her assistance．(assist) 2．The infected people are coming to realize that wearing a mask can provide protection from infection．(infect) 3．Few people are a