高二英语外研版选修六教学案Module 5 Section 4 含答案.docx

1、高二英语外研版选修六教学案Module 5 Section 4 含答案 .Match the Paras. with their main ideas according to the text on P6465.Para. 1 Aadvantages and disadvantagesPara. 2 BDNA in helping solve the crimePara. 3 CprocedureParas. 47 DcloningPara. 8 EDNA and gene答案： ECDAB.Choose the best answer according to the text on P6

2、465.1In the world first understood that both the parent plants had influenced the new plant.AWatson and Crick BCohenCBoyer DMendel2Cloning is a process that .Atakes the DNA from a single cell to create a whole new individualBputs the DNA into many cells to create a whole new individualCputs the DNA

3、into a single cell to create a different individualDtakes the DNA from many cells to create a new individual3According to the passage, which of the following is NOT true?AThe science of genetics and cloning is recent.BClones of exceptional human being may have different appearances but the same char

4、acter.CThere is no clone that is an extract copy.DThe science of cloning has many advantages.4We can read this article in the column about .Aliterature BartsCsports Dscience答案：14 DABD.单词拼写1Mr Hanks believes better relations with China are fundamental (重要的) to economic development.2You neednt worry a

5、bout your father; it is a common disease that can be cured (治愈) with relative ease.3If you want to go abroad, you will need a(n) valid (有效的) passport, or you may get into trouble.4Russian is one of compulsory (强制的) foreign language courses of the school curriculum.5The clever boy absorbed (吸收) all t

6、he knowledge his teacher could give him.6Emotional or mental problems arise (出现，产生) from a physical cause.7Two suspects (嫌疑人) are now in prison in connection with the killing.8In recent years economic growth has become a controversial (有争议的) goal.拓展词汇1gene n基因genetic adj.基因的；遗传学的genetics n遗传学2benefi

7、cial adj.有益的，有用的benefit n利益 v有益于；获利3imaginary adj.假想的，虚构的imaginative adj.富于想象力的imagination n想象力；幻觉imagine v想象，设想4incredible adj.难以置信的credible adj.可信的credit n信誉5regulation n法规，条例regular adj.有规律的；固定的regulate v规定，管理，整顿6flexible adj.易适应的flexibility n适应性，灵活性7resist v抗拒，对抗；忍住resistance n抗拒，反对，阻力resistant

8、adj.对有抵抗力，抵制的8. analyse v分析analysis n分析9. accompany v陪同，陪伴company n陪同，陪伴companion n伙伴，同伴10violence n暴力violent adj.粗暴的；猛烈的巧记单词 词根词形变化构词点拨 credibleincrediblein加形容词构成具有否定意义的形容词resistresistance动词加ance构成名词.补全短语1by mistake 错误地2treat .as 把当成对待3(be) identical to 和一样；与一致4rely on 依靠，依赖5as follows 如下6knock out

9、 摧毁7get out of control 摆脱控制8as far as we know 据我们所知9break down 分解10bring .back to life 使复活 1教材原句Its certainly true that in 1953, Watson and Crick, two scientists at Cambridge University, England, discovered the structure of the acid DNA a transparent twisting ladder made of the fundamental component

10、s of life.这是一个不争的事实，1953年，沃森和克里克，英国剑桥大学的两位科学家，发现了酸性DNA的结构构成生命基本元素的一种透明的螺旋状梯形结构。句型点拨Its adj.that .。佳句赏析今年我在澳大利亚工作的姐姐肯定会在圣诞前夕回来。It is certain that my sister, who works in Australia, will come back home before Christmas Eve this year.2教材原句An Italian doctor wants to offer cloning as an optional treatmen

11、t for couples who find it difficult to have children.一位意大利医生想把克隆作为不孕夫妇的一种选择性治疗方案。句型点拨find itadj.to do。佳句赏析这家公司难以在不断变化的市场中生存。The company found it hard to survive in a changing marketplace.3教材原句The reason why Brave New World is still so famous is that it describes a terrifying future world that is bec

12、oming more and more possible.勇敢的新世界持续走红是因为它描述了一个越来越有可能出现的恐怖的未来世界。句型点拨The reason why .is that .。佳句赏析他开车那么快的原因是他去参加一个重要会议要迟到了。The reason why he was driving so fast was that he would be late for an important meeting. 课 文 对 译Vocabulary and ReadingCloning and DNAMany people think that the science of gene

13、tics and cloning is recent. Its certainly true that in 1953, Watson and Crick, two scientists at Cambridge University, England, discovered the structure of the acid DNA a transparent twisting ladder made of the fundamental components of life. But in fact, it was in 1866 that Mendel first recorded th

14、e results of growing pea plants. He understood that both the parent plants had influenced the genetic makeup of the new plant.In 1973, biochemists Cohen and Boyer discovered a procedure to use enzymes chemicals formed in the body to unzip the DNA, to cut out a sequence of genes, and finally to inser

15、t them into the host cell and combine with its DNA.Cloning takes the DNA from a single cell to create a whole new individual. A clone is an organism which is genetically identical to another one. But its now certain that no clone is an exact copy because of differences in experiences and upbringing.

16、There are at least two teams of scientists which are trying to clone humans. Although controversial, there are many valid reasons to do so. An Italian doctor wants to offer cloning as an optional treatment for couples who find it difficult to have children. But anyone who was a clone of one of their

17、 parents would be under unknown psychological pressure throughout their childhood.Another reason is to reproduce the talents of exceptional human beings. But an Einstein clone might choose a path in life which is contradictory to the one the original Einstein chose.He may even possess new vices inst

18、ead of existing virtues!A further reason is to obtain a supply of stem cells. Stem cells in embryos are very flexible and can develop into every other type of cell in the body. For example, it could help someone recover from a disease, repair human tissue, or help them walk again after an accident.

19、These stem cells would need to come from an embryo taken from the clone of someone. But the embryo would then be wasted, which many people find unacceptable. What is clear is that some voluntary code of practice among scientists has to be agreed. If not, compulsory government regulations will have t

20、o control cloning.A fourth reason for cloning is that some scientists and farmers think it would be handy to clone, for example, a prize cow which can resist bacteria or disease, or to sow a cloned crop which can resist rot or pests. But to rely on a few cloned animals or crops would restrict the bi

21、odiversity of the breed.Finally, the latest research into DNA has helped solve crimes by analysing the suspects saliva which they spit at a crime scene or the dirt under their fingernails., 克隆与DNA许多人认为遗传学和克隆是近来才有的。事实上在1953年，英国剑桥大学的叫沃森和克里克的科学家就发现了酸性DNA结构一种由生命的基本成分组成的透明螺旋状的梯子。但实际上在1866年，孟德尔第一次记录了种植豌豆的

22、结果。他了解到母株植物影响新生植物的基因组成。在1973，生物化学家科恩和博耶发现了如下步骤：利用人体内形成的化学物质酶解旋DNA，截取一定顺序的基因片段，最后把它们植入宿主细胞，使之与其DNA结合。克隆是从一个单一细胞中提取DNA以创造一个完整的新个体的过程。克隆体是一个有机体，与另一个个体在基因上完全相同。但现在可以确定的是，由于经历与养育的不同，没有一个克隆体是准确无误的复制品。至少有两组科学家试着克隆人类。虽然有争议，但有很多正当的理由这么做。一位意大利医生想为那些很难有自己孩子的夫妇提供一种可选择的治疗方法。但那些由父母之一克隆而来的人的整个童年都会存在一种莫名的心理压力。另一个原因

23、是重造非凡的天才。但是克隆出来的爱因斯坦或许会选择一条与“原版”爱因斯坦选择的截然相反的生活道路。他甚至可能拥有新的缺点，而不是现存的优点！再一个原因是为了得到干细胞供应。胚胎干细胞是很容易适应的，能发展成人体中任何其他类型的细胞。例如，它可以帮人康复，修复人体组织或帮助经历过意外事故的人重新行走。这些干细胞需要从一个克隆人的胚胎中获得。但如果许多人发现胚胎不能接受，胚胎就会被浪费。很显然科学家们必须遵守一些自愿的原则。否则政府必须采取强制措施控制克隆。进行克隆的第四个原因是，有些科学家和农场主认为，克隆非常方便、有用，比如，一个能够抵御细菌或疾病的优选奶牛，或种植能够抵抗腐蚀病或虫害的克隆作

24、物。但仅仅依靠少数几个克隆动物或作物会限制生物品种的多样性。最后，最新的DNA研究可以通过分析嫌疑犯在犯罪现场吐的唾液或手指甲里的污秽来帮助破案。 Reading PracticeJurassic Park Scientific Fact or Hollywood Fiction?Steven Spielbergs successful scifi adventure film follows two dinosaur experts Dr Alan and Dr Ellie Sattler as they are invited by the eccentric millionaire Jo

25、hn Hammond to visit his new amusement park on an island off Costa Rica before it opens to the public. By cloning DNA taken from prehistoric mosquitoes, Hammond has created living dinosaurs for his new Jurassic Park. Accompanied by Hammonds two grandchildren, they are sent on a tour through Jurassic

26、Park in computercontrolled cars. But a tropical storm hits the island, knocking out the power supply, and an employee destroys the security system so that he can steal dinosaur embryos and sell them. The dinosaurs start to get out of control . So, since it is possible to clone sheep, is it possible

27、to clone dinosaurs? Or is this just Hollywood? First, any DNA that has been taken from a preserved mosquito is only 40 million years old. Dinosaurs are at least 60 million years old, so even if any DNA was found, the mosquitoes need to be much older, and as far as we know, mosquitoes that old do not

28、 exist.Second, although it is possible to find preserved mosquitoes, only one male has been recovered. In fact, only females can absorb the DNA of another creature. Also, there is no way of knowing if the DNA was from a dinosaur or not.Since there has been no previous discovery of dinosaurs, there i

29、s nothing to compare the new sample with.Thirdly, dinosaur DNA would not be intact after the long period of time since their extinction. When life ends, DNA breaks down and does not repair itself.Many questions also arise in the cloning of dinosaurs. Some of these questions are: What will be needed

30、to raise a baby dinosaur from childhood successfully？What kinds of conditions do dinosaurs need to survive? What are the diets of dinosaurs?What kinds of care would dinosaurs need in their adult lives? What would be done to protect humans from dinosaurs and vice versa? What ethical and human rights

31、issues raised by cloning?So cloning dinosaurs seems scientifically impossible. The world is not ready for it and the materials that are needed are not yet available. Even if it was possible to bring dinosaurs back to life they probably could not survive in the present day environment. Temperature, air, disease, and plants are all different today than in the era of dinosaurs. Dinosaurs are used to a completely different world and would find great difficulty living here. The only place that dinosaurs seem to exist today is in Hollywood.,侏罗纪公园科学事实还是好莱坞幻想