1、【美文阅读】Pandas can be saved by cloning?从1998年中国科学院动物研究所首席科学家、动物克隆与受精生物学学科带头人陈大元首次正式提出克隆大熊猫到现在，整整16年过去了，陈老仍然执著于此。然而保护大熊猫，究竟要不要通过克隆的方式呢？China has been exploring every possible means of saving giant pandas，one of the worlds most endangered species，from becoming extinct，even if it means resorting to(诉诸)cl
2、oning them.Chen Dayuan，a senior scientist who specializes in cloning at the Institute of Zoology in the Chinese Academy of Sciences，introduced the idea of performing cloning techniques on giant pandas in 1998.Using initial funding of 100,000 yuan，Chen successfully produced blastocysts(胚泡)by transpla
3、nting the somatic nucleus from sample pandas into the egg cells of rabbits.The move was considered as one of the 10 biggestachievements of science and technology in 1999.It won anaward of 6 million yuan and further funding of 5 millionyuan for the project from the Ministry of Science andTechnology.A
4、t first，two embryos were created from a surrogatemother(代母)cat who became pregnant after being injected with a blastocyst，but the experiment wasabandoned after the cat died.Chen and his team then experimented with surrogacyon black bears.After three years of effort，a black bearbecame pregnant and th
5、e shape of a fetus(胎儿)could beseen on an ultrasound scan(超声波扫描检查)However，the research was stopped in 2005 because the fetus did notcompletely develop before the projects deadline.“Those who are against cloning have made theirvoices heard throughout the research project on cloninggiant pandas.Some pe
6、ople believe cloning goes againstnature，but it is actually a pioneering technology.Ifsuccessful，itisawaytosaveendangeredanimals，”Chen said.Some scientists take a different view.“While I agreethat research on cloning is meaningful，it is inappropriateto use giant pandas in this type of experiment.The
7、numberof pandas is limited and human beings have yet to masterknowledge about pandas pregnancy.Cloning would dolittle to save the species，”said Wang Dajun，aresearcherattheSchoolofLifeSciences，PekingUniversity.In response，Chen said that he would continue hisresearch.【诱思导学】1Do you think pandas can be
8、saved bycloning？Why?_【答案】省略2Why are some scientists against cloning pandas?_【答案】Because they think cloning go againstnature.教师用书独具演示教学目标本课时主要是通过学生对学案所给出的内容的学习，了解本课文中所出现的词汇，初步了解课文以及相关的背景知识，为下一堂课对课文的全面理解起到一个铺垫作用。Period Previewing教学地位 本单元的中心话题是“克隆”。克隆意为无性繁殖，克隆技术即是无性繁殖技术。1997年英国罗斯林研究所试验成功的克隆羊多莉是首次利用体细胞克
9、隆成功的，它在生物工程史上揭开了新的一页。本单元内容具体涉及“什么是克隆”、“克隆羊多莉是如何诞生的”、“克隆的利弊”等。语言技能和语言知识都是围绕“克隆”这一中心话题设计的。目的在于让他们了解有关克隆的知识和科普文章的一些基本特征和写作方法，自己尝试写简单的辩论报告。新课导入建议可 以 通 过 让 学 生 看 和 讨 论 教 材 P10 的“热身”(Warming Up)的图片：克隆羊多莉、人类的双胞胎、草莓的自然无性繁殖以及插枝繁殖的植物等导入新课。要求学生分组讨论，了解两种不同的克隆：自然克隆和人工克隆。为下面的阅读做好铺垫。老师要尽量给学生自主学习的时间和空间，通过自学、自做、自悟、自
10、助等方式，让学生更好地体会和理解文章的内容。教学流程设计演示结束.篇章结构阅读P1112的Reading部分，然后完成下列表格Cloning：Where is it leading us？ParagraphMain ideaContents1The definition(定义)of cloningCloning is a way of making an 1._ another animal or plant.It happens both in plants and animals.2The major 2._ of cloning Firstly，gardeners use it to p
11、roduce commercial 3._.Secondly，it is valuable for research on new plant species and for medical research on animals.3The problems of DollyAt first she seemed to develop normally.Then came 4._ that she had become seriously ill，which 5._ cloning scientists.Dolly lived only six and a half years，6._ the
12、 life of the original sheep.Cloning scientists wondered now to overcome the problems.4The effect of DollyIts appearance raised a storm of 7._ and had a great impact on media and public imagination.It also occured to people that they can cure serious illnesses and even to produce 8._ using cloning.5P
13、eoples reaction tocloningGovernment became 9._.Some began to 10._ research into human cloning.Scientists still wonder whether cloning will help or harm us and where it is leading us.【答案】1.exact copy of 2.uses 3.quantities ofplants4the disturbing news 5.cast down 6.half thelength of 7.objections 8.hu
14、man beings 9.nervous andmore conservative 10.forbid.语篇理解阅读P1112的Reading部分，选择最佳答案1What are people cloning now?AThey are cloning books and machines.BThey are cloning humans and animals.CThey are cloning trees，crops，grass，flowers，etc.，as well as animals.2It can be inferred from the passage that a clone
15、danimal_.Ausually lives as long as the original oneBusually lives longer than the original oneCusually lives shorter than the original one3The cloning of Dolly the sheep succeeded because_.Ait is easier to clone a sheep than other animalsBthe scientists were determined and worked hardwith patienceCi
16、t is more useful than plants4From the passage，we can see _.ADollys original sheep lived 13 yearsBDollys baby was also a cloned oneCnewspapers did not disclose cloning sheep5We can use the skill of cloning to_.Abring about global peaceBcreate other famous scientistsCcure some special diseases【答案】15 C
17、 C B A C.课文缩写Cloning is a way of making an 1._ copy ofanother animal or plant.Cloning plants is 2._ whilecloning animals is very complicated.It is a difficult task to3._.Many attempts to clone mammals failed.But atlast the determination and patience of scientists 4._in 1996 with a 5._the cloning of
18、Dolly thesheep.Dollys appearance raised storm of 6._ andhad a great 7._ on the 8._ and publicimagination.Altogether Dolly lived six and a half years，half the length of the original sheep.At present some countries began to reform their legalsystems and9._ research into human cloning，but other countri
19、es like China and the UK，continued to10._ evidence of the abundant medical aid thatcloning could provide.【答案】1.exact 2.straightforward 3.undertake4paid off 5.breakthrough 6.objections 7.impact8media 9.forbade/forbad 10.accumulate.词义搭配1undertake Ato promise or agree to do something2breakthrough Ban i
20、mportant new discovery in something you are studying3altogether Cconnected with the principles of what is right and wrong behaviour，and with the difference between good and evil4object Dto get something that you want5obtain Ecompletely6moral Fto gradually get more and more of sth.over a period of ti
21、me7forbid Gto order sb.not to do sth.or order that sth.must not be done8accumulate Hto say that you disagree with，disapprove of or oppose sth.【答案】1.A 2.B 3.E 4.H 5.D 6.C 7.G 8.F.短语填空in favour of；pay off；object to；from timetotime；cast down；differ from；have an impact on1Jack is really having a hard ti
22、mehe cant earnenough money to _ the debts.2 AttheUNconference，Chinastrongly_punishing the Arabic countries by force.3The people are much _ by many years ofcivil war.4Fashion designers are always changing styles ofdress _ to make more money from ladies.5Are you _ the governments plan to buildmore rai
23、lway lines?【答案】1.pay off 2.objected to 3.cast down 4.from time to time 5.in favour of.句型背诵1Cloning plants is straightforward while cloninganimals is very complicated.克隆植物简单，但克隆动物就很复杂了。2The fact that she seemed to develop normally wasvery encouraging.看来多莉是在正常地成长着，这很令人鼓舞。3Then_came the disturbing news that Dolly hadbecome seriously ill.接着传来了多莉病重的坏消息。4Although at present human egg cells and embryosneeded for cloning research are difficult to obtain，newspaperswroteofevilleadershopingtoclonethemselves to attain their ambitions.尽管目前供克隆研究的人类的卵细胞和胚胎很难获得，报纸报道说，有些邪恶头目希望把自己克隆出来以实现他们的野心。