(
课件网) Unit 3 Science and nature 【文章导语】克隆技术是一种前沿高科技生物技术。你对克隆技术了解多少呢? ●Cloning(克隆技术)is the most attractive part of the new biotechnology1 and the one which causes the most heated discussion over its worth.Here are answers to the most common questions about cloning. 1.What is cloning? Cloning is the creation of cells or whole animals using DNA from a single “parent”, bypassing2 the normal reproductive process.The clone has the same DNA as the parent. 2.How are clones created? The most common process takes DNA from one cell and puts in a hollowed-out3 egg.Chemicals and electricity are then used to encourage the new DNA to fuse4 with the egg and develop into an embryo5.This technique is called nuclear transfer6. 3.Are clones normal healthy animals? Dolly is,but scientists do not yet know whether this is the exception7 or the rule.Some early evidence suggests that clones may have health problems and that they may age prematurely8. 4.Where does the law stand on live human clones? In the UK,human cloning is already banned by law.President Bill Clinton has proposed banning research into producing human clones in the US for five years.Some measures have also been made to establish international agreements. 美文翻译 克隆技术是新生物技术最具有吸引力的部分,也是就其价值引起最热烈讨论的部分。下面是有关克隆最常见问题的回答。 1.什么是克隆? 克隆是用从单个亲本的DNA复制细胞或整个动物,间接地正常再生产的过程。克隆有着和亲本相同的DNA。 2.克隆是如何创造出来的? 最常见的做法就是从一个细胞中提取出DNA,然后把它放在挖空的卵子里。用化学药品和电促使新的DNA和卵子合并,培育成一个胚胎。这一技术被称之为核迁移。 3.克隆出来的动物是正常健康的吗? 多莉是正常健康的,但是科学家还不知道这是否是个例外还是规律。一些早期的证据表明克隆可能产生健康问题,克隆的东西可能早衰。 4.人类克隆的法律依据在哪里? 在英国,法律禁止克隆人,在美国,克林顿总统建议禁止对克隆人的研究已经五年了。已采取措施建立起国际协定。 词海拾贝 1.biotechnology [?baI??tek?n?l?d?I] n.生物科技 2.bypass [?baIp??s] v.绕道而行 3.hollowed-out [h?l??d?a?t] adj. 挖空的 4.fuse [fju?z] v. 合并,融合 5.embryo [?embri??] n. 胚胎 6.transfer [tr?s?f??(r)] vi. 转换,迁移 7.exception [Ik?sep?n] n.例外 8.prematurely [?prem?t??(r)lI] adv. 过早地 难句剖析 1.Cloning is the most attractive part of the new biotechnology and the one which causes the most heated discussion over its worth. 克隆是新生物技术最具吸引力的部分,也是就其价值引起最热烈讨论的部分。 本句中which causes the most heated discussion over its worth 为定语从句。 2.Some early evidence suggests that clones may have health problems and that they may age prematurely. 一些早期的证据表明克隆可能产生健康问题,克隆的东西可能会早衰。 suggests后面是两个that引导的宾语从句,由句中的and连接。 理解诱思 1.What is the best title for the passage? 2.What is most states’ attitude to human cloning? 答案:A Brief Introduction to Cloning/Answers to the Most Common Questions about Cloning. 答案:Most states are against hu ... ...
