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Unit 2 CloningⅠ.重要单词聚焦1． vi. 不同；相异2． vt. 着手；从事；承担3．n. 突破4．vi. 反对；不赞成5．vt. 获得；赢得6． vt. 获得；到达(水平、年龄、状况等) 7． vt. 禁止；不准differundertakebreakthroughobjectobtainattainforbid8． vt. 积累；聚积9． vt. 欠(账、钱、人情等)；归功于……10．adv. 立刻；不久11． vi. 退休；离开12． vt.& vi. 打扰；操心13．n. 假定；设想14．n. 规则；规章；法规15．vi.& vt. 打；撞击；罢工16．adj. 虚荣的；自负的；徒劳的Accumulateoweshortlyretire botherassumptionregulationstrikevain17．vt. 抵抗；对抗18． adv. 仅；只；不过19．n. 装饰20． vt. 崇拜；爱慕；喜爱21． adj. 合情理的；讲道理的；公道的resistmerelydecorationadorereasonableⅡ.重要短语扫描1．pay 得到好结果；取得成功；偿清2．cast 沮丧；不愉快3．in of 赞成；支持4．(be) to (do)．.. 一定或注定(做)……5．...into one’s heart 使……刻骨铭心6． time to time 不时；偶尔7．bring back to 使复生；使复活8．in 白费力气；枉费心机offdownfavourboundstrikefromlifevain9．in good/poor 状况很好(坏)；情况很好(坏)10．have a great on 对……有很大影响conditionimpactⅢ.课文原句突破1．Then came the disturbing news that Dolly had become seriously ill.Cloning scientists were cast down to find that Dolly’s illnesses were more appropriate to a much older animal.[信息提取] be appropriate to (for) sth.适合于……的；适当的。
Unit 2 CloningPeriod3 Language points and learning about language Teaching aims:1.Learn expressions and phrases.2.Learn language points.Teaching important points:Language pointsTeaching methods:Presentation and practiceTeaching aids:A blackboard, chalk and a computerTeaching procedures:Step 1 RevisionRetell the passageStep 2 Language points• 1. It is a way of making an exact copy of another animal and plant. exact adj.精确的, 准确的, 原样的, 精密的What were his exact words?I don’t know the exact size of the room.exactly adv.正确地, 严密地,恰恰That’s exactly what I expected.You’ve arrived at exactly the right moment.exactly speaking准确地说2. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.这种现象也发生在动物身上，从同一个原生卵子产生性别和相貌相同的双胞胎也是克隆。
(1)It 指代上文的cloning(2)happen vi. occur by chance; take place(偶然地）发生；出现happen to do …happen to sb.It happened that …happening n. 事件；偶然发生的事(常用复数)(3) identical in sex and appearance 是一个形容词短语作后置定语,修饰twinsidentical adj.(常与with连用)完全相同的，用identical 翻译如下句子这两种样式几乎完全相同。
Unit 2 Cloning李仕才***阅读理解。
Spider(蜘蛛) webs have something in common with guitar strings. The long, thin strings on a guitar can vibrate(振动). They move back and forth, or from side to side. So do webs made by spiders. The lines of silk they produce can carry vibrations. This movement gives the small creature information about what landed on the web.Spiders have eight legs and usually eight eyes. The animals build webs with their own soft, naturallymade silk. And much like playing the strings of a guitar, a spider can send out vibrations across its web over many different frequencies(频率). Spiders catch their food, usually insects in their webs. They make small movements, which spread across their webs. The vibrations can give the spider details about what is caught in the web—maybe a possible mate，or something tasty to eat.Vibrations are not just used to spot what is for dinner. They are also important in courtship(求爱), so lots of males will actually create a very specific kind of musical pattern which the females can use to determine not only that they’re a male, but they’re the right species, and whether they might want to mate with them as well.Spiders make their own vibrations to find out the condition of the webs. By controlling the tightness of the material, they can effectively control how information is getting to them when they hang out in the middle of the web.Spiders have a special ability to shape the physical nature of their selfmade materials and creations. Scientists think that spider silk may have changed over time for this purpose.【解题导语】本文介绍了蜘蛛吐出的蛛丝可以传播不同频率的振动，这些振动让它们知道蜘蛛网上落下了什么东西并且这些振动在求爱中也非常重要。
第一部分选修8 Unit 2Ⅰ.单句改错1．The advantage of the approach is what it can save a lot of time.________________________________________________________________________2．You are forbidden leave here without permission.________________________________________________________________________3．Whatever you say, I will object the idea to clone human beings.________________________________________________________________________4．All the children were in good physical conditions.________________________________________________________________________5．Hearing the bad news, he couldn't resist cry.________________________________________________________________________【答案】1.what→ that 2.在leave前加to3．在object后加to 4.conditions→condition5．cry→cryingⅡ.语境填空2．All I am I________my mother.3．The two theories ____________ from each other in many ways.4．____________ speaking, what he had said was not reasonable.5．This ___________ strengthens our confidence to win the match.6．I have no ____________ to his spending the holiday with us.7．As far as I know, local government ____________ killing wildlife.8．I would appreciate it if you could ____________ the tough task.9．____________ the centre lost more than 1,000 trees in the hurricane.10．It is by no means clear what the president can do to end the ____________.11．New challenges for customer care have come when people can ____________ goods and services through telephone call centers and the Internet.12．If a lot of people say a film is not good, I won't ____________ to see it, or I'll wait until it comes out on DVD.13．It is a difficult problem for high school students whether they can ____________ the temptation of online games.【答案】1.shortly 2.owe 3.differ 4.Exactly 5.merely6．objection 7.forbids 8.undertake 9.Altogether10．strike 11.obtain 12.bother 13.resistⅢ.短语活用2．I______________ being treated like this.I'm a grown-up now.3．Two years of business school really ______________.He got success in his career.4．You ______________ feel nervous about your job interview.5．The current government is______________ his economic plan.6．She went upstairs to see if her baby was still asleep ______________.7．The old lady couldn't ______________ by the doctors because she had already stopped breathing before the arrival of them.8．All the doctors did ______________，and the patient died after three days' treatment.9．The poor boy ______________ his fear and experience in the earthquake ______________ people's heart.10．I bought the computer ten years ago.It still stays______________.【答案】1.cast down 2.object to 3.paid off4．are bound to 5.in favour of 6.from time to time7．be brought back to life 8.was in vain 9.struck; into10．in good conditionⅣ.完成句子1．我们不相信他们反对我们在会议上提出的建议的消息。
Unit 2 CloningⅠ阅读理解ASeven years ago，back in 2010，some reports covered a story that the worl d’s longest railway tunnel was under construction in Switzerland.At that point it had already been under construction for over a decade.It had been voted to be built nearly a quarter of a century ago！The idea to build it could date back to nearly 70 years ago—about as old as some of your grandparents!Yesterday，it was finally ready!It’s about 35 miles long and runs 7，500 feet beneath the Swiss Alps，a famous mountain range in Switzerland.It even runs under an old tunnel that was there before.It took a total of 17 years to build at a cost of$12 billion！28 million tons of rock were dug.Two million truckloads of earth were removed!The tunnel connects northern and southern Europe.The opening of this tunnel was such a big deal that the Germany’s leader，Chancellor Angela Merkel，France’s president，Francois Hollande，and Italy’s prime minister，Matteo Renzi，were all there to celebrate，as was Austria’s chancellor Christian Kern.It’s called the Gotthard Base Tunnel.Eventually，325 freight and passenger trains will go through the tunnel，relieving a lot of traffic on the roadways there and making it a more environmentally friendly option.The Gotthard Base Tunnel is a wonder of engineering and makes us want to visit it!【解题导语】本文介绍了戈特哈德隧道的建成及其相关状况和由此带来的意义。
