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课件网) 选修八 Unit 2 Cloning 好句背诵 1. Cloning plants is straightforward while cloning animals is very complicated. 2. On the one hand, the fact that Dolly seemed to develop normally was very encouraging. 3. Dolly’s appearance raised a storm of objections and had a great impact on the media and public imagination. 4. All efforts of an animal will be in vain if there is not enough diversity in the group to overcome illnesses. 5. So the chance of dinosaurs ever returning to the earth is merely a dream. 课时自测 词类转换 1. differ vi. 不同；相异 _____ adj. 不同的 _____ n. 不同 2. carry v. 携带 _____ n. 携带者；搬运工；运输工具 3. correct v. 正确的 _____ n. 改正；纠正；修正 4. object vi. 反对；不赞成 _____ n. 反对 different difference carrier correction objection 词类转换 5. assume v. 假设 _____ n. 假定；设想 6. decorate v. 装饰 _____ n. 装饰 7. able adj. 有能力的 _____ adj. 不能的；不会的 _____ n. 能力 _____ adj. 残疾的 _____ n. 残疾 8. reason n. 理由 v. 理论 _____ adj. 合情理的；讲道理的；公道的 assumption decoration unable ability disabled disability reasonable 1. Governments became nervous and more conservatively. 2. A suitable habitat would be needed for them to lead the natural life. 单句改错 _____ conservative 3. Then came the disturbing news whether Dolly had become seriously ill. ___ a _____ that 单句改错 4. Cloning plants is straightforward while cloning animals are very complicated. 5. The great drawback to cloning a group of animals are that they would all have the same arrangement of genes and so might die of the same illness. ___ is is ____ 单句改错 6. Firstly, gardeners use it all the times to produce commercial quantities of plants. time _____ 7. Unfortunately, with which we know now, this is either impossible or unsuitable. 8. In many aspects, natural clones, such as identical twins, do not differ greatly with man-made ones. _____ _____ what from 单句改错 9. Dolly’s appearance raised a storm of objections and had a great impact to the media and public imagination. 10. Cloning scientists were cast down to find it that Dolly’s illnesses were more appropriate to a much older animal. __ on Cloning is a way of making 1_____ exact copy of another animal or plant. It happens in animals when twins identical in sex and appearance 2 (produce) from the same original egg. Cloning plants is straightforward 3_____ cloning animals is complicated. It is a difficult task 4__ ___ _____ (undertake). On the one hand, the fact that Dolly seemed to develop normally was very 5__ ___ _____ (encourage). Then came the disturbing news that Dolly had become 6__ _____ ____ (serious) ill. an are produced while to undertake encouraging seriously 语法填空 Scientists were cast down to find that Dolly’s illnesses were more appropriate to a much 7____ ___( (old) animal. On the other hand, Dolly’s appearance raised a storm of 8___ ___ (object) and had a great impact on the media and public imagination. It ... ...
