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知识梳理核心突破单元微写作分层限时跟踪练选修 8 Unit 2 Cloning 知识梳理| 五种记忆攻克预习关 Ⅰ.重点单词音义记 A．根据所给提示写出下列单词 1．____________/ˈbreIkθruː/ n．突破 2．_________/ˈdrɔːbæk/ n．缺点；不利条件 3．_______/kɑːst/ vt.扔；投；掷 4．_______/straIk/ vt.& vi.打；撞击；罢工 n.罢工 5．_______/əbˈteIn/ vt.获得；赢得 breakthrough drawback cast strike obtain 6．_______/əˈteIn/ vt.获得；到达(水平、年龄、状况等) 7．_________/ˌʌndəˈteIk/ vt.着手；从事；承担 8．_______/əʊ/ vt.欠(账、钱、人情等)；归功于…… 9．_______/fəˈbId/ vt.(forbade，forbad；forbidden)禁止；不准 10．___________/ˈriːznəbl/ adj.合情理的；讲道理的；公道的 attain undertake owe forbid reasonable B．用上述单词的适当形式填空 11．Scientists are hoping for a ____________ in the search for a cure for cancer. 12．Dr.Johnson ____________ the task of writing a comprehensive English dictionary last year. 13．I ____________ this record for you with difficult. 14．He ________ his success to his teacher. 15．The workers want the boss to give a ____________ explanation for reducing their pay. breakthrough undertook obtained owes reasonable 掌握这些生义 1．undertake vt.承诺；答应 2．owe vt.忠诚，服从 3．strike vt.& vi.报时；划(火柴) Ⅱ.拓展单词构词记 A．根据所给提示写出下列单词 1．__________vt.改正 adj.正确的；恰当的；端正的→____________n．改正；纠正；修正 2．_________vi.反对；不赞成→____________n．不赞成；反对；异议→____________adj.客观的；就事论事的 3．_________vi.不同；相异→____________adj.不同的→____________n．不同，差异 correct correction object objection objective differ different difference 4．____________adj.精确的；准确的→____________adv.恰好地；精确地；正确地 5．____________vt.假定；设想→____________n．假定；设想 6．____________vt.调节；管理→____________n．规则；规章；法规 7．____________adj.流行的，通俗的；受欢迎的→____________n．受人喜爱...