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Key： ① believe it or not, most of your problems may actually be good for you ② The reason is that the coral around the lagoon side is in still water ③ The coral on the ocean side is constantly being tested by wind, waves and storms ④ As it is challenged and tested, it changes and adapts ⑤ Challenged and tested, we come alive 选修九 Unit 4 Exploring plants 1. 课前自测 2. 课堂学案 词汇接龙 1. _______(n. 植物学家)→_______(adj. 植物的；植物学的) 2. _______(vt. & vi. 灌溉；冲洗)→_______(n. 灌溉)→_______(n. 灌溉车；灌溉设备) 3. _______(vt. 限制；约束)→_______(n. 限制；约束)→_______(adj. 拘束的；限制的) 4. _______(n. 流利；流畅)→_______(adj. 流利的；流畅的)→_______(adv. 流利地；通畅地) 5. _______(vt. 给……授粉)→_______(n. 虫媒；传粉者)→_______〔n. 授粉(作用)〕 6. _______(adj. 芬芳的；香的)→_______(adv. 芬芳地；愉快地)→_______ (n. 芬芳；香味；香水) 课前自测 Key:1. botanist; botanical 2. irrigate; irrigation; irrigator 3. restrict; restriction; restrictive 4. fluency; fluent; fluently 5. pollinate; pollinator; pollination 6. fragrant; fragrantly; fragrance 词汇接龙 7. ______(vt. 降低；跌落；减弱)→_______(adj. 低的；矮小的；沮丧的；下贱的 adv.低声地；谦卑地；底下地) 8. _______(vt. & vi. 发展；进展；进化)→_______(n. 进化；发展；演变) →_______(adj. 进化的；演变的) 9. _______(adj. 紧的；紧密的 adv. 紧紧地；彻底地)→_______(adv. 紧紧地；坚固地)→_______(vt. 使变紧；使更牢固) 10. _______(vt. 容纳；包含；抑制；克制)→_______(n. 容器；集装箱)→ _______(adj. 泰然自若的；从容的；被控制的) | 
