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Ⅰ.阅读单词(知其意)
1．ecology n． 生态
2．botanical adj. 植物的
3．consultant n. _顾问
4．corrupt adj. 贪污受贿的，腐败的
5．conservation n. 保护
6．consensus n. 一致的意见
7．drought n. 旱灾
8．hurricane n. 飓风
9．species n. (动植物的)物种
10．habitat n. 栖息地
11．enforce vt. 实施，执行
12．scale n. 规模，范围
13．thunderstorm n. 雷暴，雷雨
14．rainfall n. 降雨量
15．irrigation n. 灌溉
16．evolution n. (生物)进化
17．mountainous adj. 多山的
18．valid adj. 有充分理由的
19．fragile adj. 易毁的；脆弱的
20．negative adj. 消极的，负面的
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Ⅱ.重点单词(写其形)
1．endangervt. 危害
2．trapvt. 使困住
3．principle n. 原则，道德准则
4．beyond prep. 超出
5．relevant adj. 有关的
6．coincidence n. 巧合
7．condemnvt. 迫使(某人)陷于不幸的境地
8．sacrificevt. & vi. 牺牲；献出
9．advocatevt. 主张，提倡
10．recyclevt. 回收利用
11．substitute n. 代替品，代用品
12．seizevt. 依法没收；(用武力)夺取
13．behalf n. 代表
14．means n. 方法
15．fleevt.&vi. 逃走
16．potential n. 可能性，潜在性
17．claimvt. 声称
18．threatenvt. 威胁
19．armvt. 武装
20．finance n. 资金
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Ⅲ.拓展单词(通其变)
1．extinct adj.灭绝的，绝种的→extinction n．灭绝，绝种
2．fashionable adj.流行的，时髦的→fashion n．流行，时尚
3．separation n．分离，分开→separate adj.分开的v.分离，分开
4．construct vt.建造→construction n．建造
5．considerate adj.想得周到的，体贴的→considervt.考虑→consideration n．考虑→considering prep.考虑到；鉴于
6．adopt vt.采用；收养→adoption n．收养；采用→adopted adj.收养的
7．reservation n．预订；保留；保护；疑惑→reserve n．保护区vt.保留；预订→reserved adj.预订的，保留的
8．agriculture n．农业→agricultural adj.农业的
9．changeable adj.多变的→change n. & v．变化
10．allocate vt.分配，配给→allocation n．分配，配给
11．sharpen vt.削尖→sharp adj.锋利的→sharpener n．卷笔刀
12．calculate vt.计算，算出→calculation n．计算→calculator n．计算器
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[语境活用]
1．The old man considers his daughterinlaw considerate because she always takes everything into consideration when she deals with family affairs.(consider)
2．After a long separation,_ they both lived a separate life and in the end they separated peacefully.(separate)
3．A new bridge is being constructed over the river and its construction will be finished next year.(construct)
4．It is not safe to let the child sharpen his pencil using the sharp sharpener.(sharp)
5．Mr.White is the adopted son of Mrs.Green, who adopted him when his parents died 20 years ago. Thanks to her adoption,_Mr.White could receive a good education and became an engineer.(adopt)
6．The world is changeable,_ and everything is changing.(change)
7．If necessary, students are allowed to calculate the volume (容积) of the container using a calculator,_ which will make the calculation simpler.(calculate)
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