选修 8 Unit 2 Cloning要 点 梳 理 高效梳理·知识备考●重点单词1．differ vi.不同；相异→different adj.不同的→difference n．不同，差异2．twin n．双胞胎之一；孪生儿之一 adj.成对的；成双的3．straightforward adj.简单的；直接的；坦率的4．undertake vt.着手；从事；承担→undertook(过去式)→undertaken(过去分词) 5．breakthrough n．突破6．cast vt.扔；投；掷→cast/cast(过去式/过去分词)7．object vi.反对；不赞成→objection n．不赞成；反对；异议→objective adj.真实的；客观的；无偏见的8．obtain vt.获得；赢得9．attain vt.获得；达到(水平、年龄、状况等)10．forbid vt.禁止；不准→forbade(过去式)→forbidden (过去分词)11．accumulate vt.积累；聚积12．owe vt.欠(账、钱、人情等)；归功于……13．retire vi.退休；离开→retirement n．退休14．bother vt.打扰 vi.操心 n．烦扰15．strike vi. & vt.打；撞击；罢工→struck/struck (过去式/过去分词)16．vain adj.虚荣的；自负的；徒劳的17．resist vt.抵抗；对抗→resistance n．抵抗；对抗→resistant adj.18．drawback n．缺点；不利条件19．feather n. 羽毛20．adore vt.崇拜；爱慕；喜爱●重点短语1．pay off 得到好结果；取得成功；偿清2．cast down 沮丧；不愉快3．object to 反对4．in favour of 赞成；支持5．owe...to... 把……归功于……6．(be)bound to(to)．.. 一定或注定(做)……7．strike...into one’s heart 使……刻骨铭心8．from time to time 不时；偶尔9．bring back to life 使复生；使复活10．in vain 白费力气；枉费心机11．in good/poor condition 状况很好/坏；情况很好/坏12．have a great impact on 对……有很大影响●重点句型1．Then came the disturbing news that Dolly had become seriously ill.之后传来了多莉得了重病的令人烦恼的消息。2．Altogether Dolly lived six and a half years, half the length of the life of the original sheep.多莉总共存活了 6 年半，是被克隆羊的寿命长度的一半。3．Did she die young because she was a clone? 因为她是克隆的，所以才早逝了吗？4．Besides that, there is also a fierce dabate over the question whether human cloning experiments shou...
