1、Unit 2 Cloning导语 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 20 年过去了，陈老仍然执着于此。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) cloning them.Chen
2、 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 transplanting the soma
3、tic nucleus from sample pandas into the egg cells of rabbits.“Those who are against cloning have made their voices heard throughout the research project on cloning giant pandas.Some people believe cloning goes against nature，but it is actually a pioneering technology.If successful，it is a way to sav
4、e endangered animals， ”Chen said.Some scientists take a different view.“While I agree that research on cloning is meaningful，it is inappropriate to use giant pandas in this type of experiment.The number of pandas is limited and human beings have yet to master knowledge about pandas pregnancy.Cloning
5、 would do little to save the species， ”said Wang Dajun，a researcher at the School of Life Sciences，Peking University.In response，Chen said that he would continue his research.词海拾贝1endangered adj.快要绝种的2technique n技巧，手法3transplant v 移植4pregnancy n怀孕问题思考1Do you think pandas can be saved by cloning？Why?
6、_2Why are some scientists against cloning pandas?_答案：1.略2Because they think cloning goes against nature.为单词选择正确的释义1commercial A装饰2undertake B最初的，开始的3breakthrough C假定；设想4procedure D媒介；手段；工具5altogether E程序；步骤；手续6medium F规则；规章；法规7assumption G商业的；贸易的8regulation H着手；从事；承担9initial I缺点；不利条件10drawback J总共；完
7、全地11decoration K突破答案：1G 2H 3K 4E 5J 6D 7C 8F 9B 10 I 11A.根据所给汉语提示写出单词1_ n双胞胎之一；孪生儿之一adj.成对的；成双的2_ vt.扔；投；掷3_ vt.获得；赢得4_ vt.获得；到达(水平、年龄、状况等)5_ adj.道德(上)的；伦理的6_ vt.欠( 账、钱、人情等)；归功于7_ vi.退休；离开8_ vt.打扰 vi.操心 n烦扰9_ n羽毛10_ adj.合情理的；讲道理的；公道的答案：1.twin 2.cast 3.obtain 4.attain 5.moral6owe 7.retire 8.bother 9.
8、feather 10.reasonable.根据英语释义写出单词1_：outspoken2_：correct in every detail3_：a change that makes sth more accurate than it was before4_：be different5_：be against6_：collect or gather over a period of time7_：hit someone or something8_：having too much pride9_：be against someone10_：only11_：not able to do so
9、mething12_：admire very much答案：1.straightforward 2.exact 3.correction 4.differ5object 6.accumulate 7.strike 8.vain 9.resist10merely 11.unable 12.adore.选用正确短语的适当形式完成句子differ from；object to；in favour of；to be exact；pay off；in good condition；strike.into ones heart(s)；cast down；from time to time；be bound
10、 to；bring.back to life；in vain1Dont lose heart.Your efforts will _ sooner or later.2Robert sat there alone，looking _What had happened to him?3Are you _ Tonys suggestion that we should work around the clock to meet the deadline?4His parents _ his going to the USA for further study，because they though
11、t he was too young.5He will set off the day after tomorrow，_，on May 26，Tuesday.6My opinion about the problem _ yours.I think things will get better if we try our best.7Our teacher _ the importance of safety _，so we were all careful when crossing the street.8Though the building was built in the 1980s
12、，it is still _9The old kindhearted man donated money to charities _ though he didnt have much money.10To our great delight，the badly injured boy was _ by the experienced doctors.11I am afraid your efforts are _；he wouldnt listen to others.12There appeared a rainbow.The weather _ get better.答案：1.pay
13、off 2.cast down 3.in favour of 4.objected to5to be exact 6.differs from 7.struck into our hearts8in good condition 9.from time to time 10.brought back to life 11.in vain 12.was bound to课文表层理解.判断正(T)误(F)1A cloned animal usually dies earlier than the original one.( )2Cloned people could live forever.(
14、 )3Cloning is something that has been developed quite recently.( )4The lamb is the clone of the cell from sheep because it provides the nucleus.( )5There were many arguments about animal cloning and concerns about the future of cloning.( )答案：1.T 2.F 3.F 4.T 5.T.读课文，完成表格Cloning：Where is it leading us
15、？Paragraph Main idea Contents1The 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 cloningFirstly，gardeners use it to produce commercial 3._Secondly ，it is valuable for research on new plant species and for me
16、dical research on animals.3 The 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 life of the original sheep.Cloning scientists wondered how to overcome the problems.4
17、The 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.5 Peoples reaction to cloningGovernment became 9._Some began to 10._ research into human
18、 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 of plants4the disturbing news 5.cast down6half the length of 7.objections 8.human beings9nervous and more conservative 10.forbid课文深层理解.主旨匹配Para.1 AThe major uses an
19、d procedures of cloning.Para.2 B The definition of cloning.Para.3 CPeoples reaction to cloning.Para.4 DThe problems of Dolly.Para.5 E The effect of Dolly.答案：Para.1B Para.2A Para.3D Para.4 E Para.5C.单项选择1It can be inferred from the passage that a cloned animal _Ausually lives as long as the original
20、oneB usually lives longer than the original oneCusually dies earlier than the original oneDis usually as healthy as the original one2Which of the following is an advantage of cloning?ACloning can be used for earning money.B Large quantities of food can be produced by cloning.CCloning can not help ke
21、ep animals from becoming extinct.DFamous persons who have passed away can be cloned.3We can use the skill of cloning to _Abring about global peaceB create other famous scientistsCimprove the development of learning languageDcure some special diseases4What can we learn from the text?ACloned mice can
22、live as long as the original ones.B Cloning will come to an end because of objections.CAll the research into human cloning will be forbidden.DIt is more difficult to clone animals than clone plants.5What is the writers attitude towards cloning in this passage?AObjective. BNegative.CPositive. DUnclea
23、r.答案：1.C 2.B 3.D 4.D 5.A.领会下列句子所用的句型并尝试译成汉语1It is a difficult task to_undertake_2Cloning plants is straightforward while cloning animals is very complicated._3Although at present human egg cells and embryos needed for cloning research are difficult to obtain，newspapers wrote of evil leaders hoping t
24、o clone themselves to attain their ambitions._4Then_came the disturbing news that Dolly had become seriously ill._答案：1.它是一项很难完成的任务。2克隆植物简单，但克隆动物非常复杂。3尽管目前供克隆研究的人类卵细胞和胚胎很难获得，报纸报道却说，有些邪恶头目希望把自己克隆出来以实现他们的野心。4接着传来多莉病重的坏消息。.课文缩写Cloning is a way of making an 1._ copy of another animal or plant.Cloning pla
25、nts is 2._ while cloning animals is very complicated.It is a difficult task to 3._Many attempts to clone mammals failed.But at last the determination and patience of scientists 4._ in 1996 with a 5._the cloning of Dolly the sheep.Dollys appearance raised storm of 6._ and had a great 7._ on the 8._ a
26、nd public imagination. Altogether Dolly lived six and a half years，half the length of the original sheep.At present some countries began to reform their legal systems and 9._ research into human cloning，but other countries like China and the UK，continued to 10._ evidence of the abundant medical aid
27、that cloning could provide.答案：1.exact 2.straightforward 3.undertake4paid off 5.breakthrough 6.objections 7.impact8media 9.forbade/forbad 10.accumulate如何写议论文议论文主要针对某一观点或问题(一般为有争议的观点或问题)发表议论和看法，因此写此类文章时要考虑的论据多为正反两个方面。通过对有争议的观点或问题的不同看法进行比较，然后进行分析和评论，最后提出自己的看法，表达自己支持或反对的态度并加以论证说明，得出结论。1在文章的开头提出有争议的观点(一般
28、提出两个相对的观点，然后客观地对其进行评析)。2接下来可用一个或两个段落分别展开论述。在每段中，均可用主题句来点明论点，并对这些论点进行比较和对比、分析和评论。3文章结尾对所论述观点进行客观、合理的评论，提出自己的看法、建议；或者也可以将不同观点相互融合，选其可取之处，形成自己独到的观点。写作积累(一) 话题词汇opinion n观点progress n进步breakthrough n突破shop online 网上购物surf the Internet 网上冲浪browse the web page 浏览网页drawback n缺陷development n发展harmful adj.有害的
29、advantage n优点disadvantage n缺点in favour of 支持object to 反对change ones life 改变某人的生活(二) 常用句式1There are different opinions among people as to.Some people suggest that.2Peoples opinions about.vary from person to person.Some people say that.3Everything has two sides and.is not an exception；it has both adva
30、ntages and disadvantages.4On the contrary，there are some people in favour of.At the same time，they say.5There are several measures for us to adopt.First.6Faced with.we should take a series of effective measures to.For one thing.for another.7As far as I am concerned，I agree with the latter opinion to
31、 some extent.I think that.8Comparing this with that，however，I prefer to.9For my part，I think it reasonable to.Only in this way can you.10From what has been discussed above，we may reasonably arrive at the conclusion that.人们完成工作的方式通常有两种：独立完成和合作完成，两种方式各有特点。请你以“Working Individually or Working in a Team”
32、为题，按照以下要点写一篇英语短文。1独立完成：自行安排，自己解决问题。2合作完成：一起讨论、相互学习。3我喜欢的方式和理由。注意：词数 100 左右。写作要点1提出完成工作有两种方式。2分别叙述独立完成工作和合作完成工作这两种方式。3写出自己喜欢的方式和理由。范文点评范文 点评Working Individually or Working in a TeamThere are basically two ways to get work_doneOne is to work individuallyIn this way，people can 本文针对人们对独立完成工作和合作完成工作这两种方式
33、的看法，分别给出两方的理由，并写出自己喜欢的方式及理由。文章层次清楚，decide for themselves when to start work and how to do it.Whats more，they will be able to learn how to solve problems on their own.People may also choose to work in a team， where they can learn from each other and help each other.Besides ，they may work out better w
34、ays to get work done by discussion.Personally，I prefer to work in a team.On the one hand，it offers me a chance to learn how to get along with others and to share my experience with them.On the other hand，as the work can be divided among several people，it can be done efficiently.Therefore，teamwork is
35、 always important.用词准确，过渡自然。提出话题，引出下文。一方观点，后文紧接理由。Whats more 用得恰当，自然。提出另一方观点。Besides 用得准确，且避免了用词重复。提出自己的观点每个家庭都有忙不完的日常家务活(household chores)。高中生是否应该帮助父母干家务活？在班会课上，你班同学就这一话题展开辩论。请你选择一方观点(正面的或反面的 )，根据以下表格提示，用英语写一篇发言稿。词数：100 左右。开头与结尾已给出，不计入总词数。支持1.减轻父母负担，是感恩形式之一。2培养劳动意识，提高独立能力。3不同观点反对1.枯燥无味，影响情绪。2耗费时间，不
36、利于学习。3Should Senior High School Students Help Parents With Household Chores?“Should senior high school students help parents with household chores？” Different students have different views._ Thats all.Thank you!答案：Should Senior High School Students Help Parents With Household Chores?“Should senior h
37、igh school students help parents with household chores？” Different students have different views.As for me, I am strongly in favour of students helping parents with chores.Firstly, it can reduce the burden over our parents and it is clearly a form of expressing thanks to them.As is known to us all,
38、our parents are busy with their work to bring us up.If we help them do some chores such as cleaning up rooms, polishing furniture, washing clothes and cooking meals.They will have more time to relax themselves.Whats more, by doing chores, we can be increasingly aware of the necessity of labor and gr
39、adually improve the ability of independence.Most importantly, by doing it, we may adjust our mind, forgetting about our homework for the moment and thus improving our learning.Thats all.Thank you！A 级 基础过关.单句语法填空在句中空白处填上适当的内容(1 个单词)或括号内单词的正确形式。1The eating habits in the north differ very much _ those
40、in the south.2Leaves are found on all kinds of trees，but they differ greatly _ all sizes and shapes.3I know _ (exact) how she felt.4He undertook _ (buy) me a car.5The men were paid _ on the last day before the holiday.6Her parents paid _ her to go to Canada.7Dont be so cast _Just keep your spirits u
41、p.8The main objection _ the plan was that it would cost too much.9Many local people object _ the building of the new airport.10The standard is easily _ (attain) by most students.11My brother was forbidden _ (play) the online games by my parents，so he was sad and angry.12Students are forbidden _ refe
42、rring to their notes in the examination.13The tourism in this place will have an impact _ the local environment.14Some experts at the meeting were _ favour of this project.15My idea is _ you should apologize to your teacher.16The question is _ we should ask them for help or not.17I told his secret t
43、o others.Thats _ he got angry with me.18I am fond of pop music _ my parents like classical music.答案：1.from 2.in 3.exactly 4.to buy 5.off 6.for 7.down 8.to 9.to 10.attainable 11.to play 12.from13on 14.in 15.that 16.whether 17.why 18.while.话题微写作将下列句子翻译成英语并连成一段意义完整、语言流畅的小短文(80 词左右 )。1约翰跟他的双胞胎妹妹性格不同。(differ)2他总是很乐观，而他妹妹却时不时地感到很沮丧。(from time to time；cast down)3一天他想和他妹妹修一辆状况很差的二手车，但他妹妹却不许他干这活。(in poor condition ；forbid；undertake)4她希望他不要拿这样的事情来烦她。(bother)5但她抵制不了他想尝试一下的欲望。(resist)6他突然想到应该找朋友帮忙。(strike)7他的朋友非常支持他的想法。(favour)8他们的努力最后得到了回报。(pay off)9然后传来消息说车已经修好了。(完全倒装结构)10他把他的成功归功于朋友的帮助。(owe)_答案
