Dolly是世界上第一例用體細(xì)胞乳腺上皮細(xì)胞

1、Unit 2Unit 2Cloning: Cloning: Where Is It Leading Where Is It Leading Us?Us?Jintai Senior High SchoolDu KunDolly是世界上第是世界上第一例用體細(xì)胞一例用體細(xì)胞乳腺上皮細(xì)胞乳腺上皮細(xì)胞, 通通過細(xì)胞核移植技過細(xì)胞核移植技術(shù)術(shù), 在復(fù)雜的人工在復(fù)雜的人工操作下操作下, 得到的一得到的一只小綿羊只小綿羊 。2002年年4月月16日日美國第一頭克隆美國第一頭克隆牛?！鞍装住碑a(chǎn)下產(chǎn)下牛犢喜作媽咪。牛犢喜作媽咪。a cloned ox2002年年5月中月中旬成功地繁殖旬成功地繁殖了一只胚胎細(xì)了

2、一只胚胎細(xì)胞克隆兔。胞克隆兔。 a cloned rabbit第一只克隆貓第一只克隆貓 the first cloned cat克隆馬及其克隆馬及其“母親兼姐姐母親兼姐姐”a cloned horse克隆的熒光小豬克隆的熒光小豬(左左)和正常小豬和正常小豬(右右) a cloned pigCloning is a way of making an exact copy of another animal or plant.What is cloning ?The definition of cloning exact twin commercial straightforwardunderta

3、ke breakthroughprocedure carrieradj. 精確的；準(zhǔn)確的精確的；準(zhǔn)確的n. 雙胞胎之一雙胞胎之一adj. 成對的；成對的； 成雙的成雙的adj. 商業(yè)的；貿(mào)易的商業(yè)的；貿(mào)易的adj. 簡單的；坦率的簡單的；坦率的vt. 著手；從事；承擔(dān)著手；從事；承擔(dān)n. 突破突破n. 程序；步驟；手續(xù)程序；步驟；手續(xù)n. 攜帶者；搬運(yùn)工；攜帶者；搬運(yùn)工； 運(yùn)輸工具運(yùn)輸工具Words preview castaltogether arbitrary correction object objection mediumthe media obtain vt. 扔；投；擲扔；投；擲

4、adv. 總共；完全地總共；完全地adj. 任意的任意的 n. 改正；糾正；改正；糾正； 修正修正vi. 反對；不贊成反對；不贊成n. 不贊成；反對；異議不贊成；反對；異議n. 媒介；手段；工具媒介；手段；工具 大眾傳播媒體大眾傳播媒體vt. 獲得；贏得獲得；贏得Words preview attainmoral conservative forbid accumulatevt. 獲得；到達(dá)獲得；到達(dá)adj. 道德道德(上上)的；倫理的的；倫理的adj. 保守的；守舊的保守的；守舊的vt. 禁止；不準(zhǔn)禁止；不準(zhǔn) vt. 積累；聚積積累；聚積Words previewpay off cast d

5、ownobject to in favour of 得到好結(jié)果；取得成功；得到好結(jié)果；取得成功；償清償清沮喪；不愉快沮喪；不愉快反對反對贊成；支持贊成；支持Expressions previewCareful readingTry to understand the text as much as possible A.Cloning. B.Dolly the sheep . C.It will lead us to some places. A. Expositive. B. Descriptive. C. Argumentative.3. The main idea of the text

6、 is_ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden. C. animal cloning is well developed because Dolly the sheep was born. D. animal cloning raised arguments and scientists are not sure about its future. 4. It ca

7、n be inferred from the passage that a cloned animal_.A. usually lives as long as the original oneB. usually lives longer than the original oneC. usually lives shorter than the original oneD. is usually as healthy as the original one 5. The cloning of Dolly the sheep succeeded because_. A. its easier

8、 to clone a sheep than other animals B. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failed6. Which of the following is not an advantage of cloning?A. Cloning can be used for medical purposes.

9、 B. Large quantities of food can be produced by cloning.C. Cloning can help keep animals from becoming extinct.D. People can clone themselves at will.A.Cloning. B.Dolly the sheep . C.It will lead us to some places.A.Expositive.（說明性的）（說明性的）B.Descriptive（描述性的）描述性的）C.Argumentative( (議論性的）議論性的）Post-read

10、ing: Choose the right answer according to the text.3. The main idea of the text is_ A. animal cloning is very valuable and can benefit the world. B. animal cloning could be misused by bad people so it must be forbidden. C. animal cloning is well developed because Dolly the sheep was born. D.animal c

11、loning raised arguments and scientists are not sure about its future.4. It can be inferred from the passage that a cloned animal_.A. usually lives as long as the original oneB. usually lives longer than the original oneC. usually lives shorter than the original one D. is usually as healthy as the or

12、iginal one5. The cloning of Dolly the sheep succeeded because_. A. its easier to clone a sheep than other animals B. the scientists were determined and worked hard with patienceC. the scientists were rewarded and got lots of moneyD. many other attempts to clone mammals failed6. Which of the followin

13、g is not an advantage of cloning?A. Cloning can be used for medical purposes. B. Large quantities of food can be produced by cloning.C. Cloning can help keep animals from becoming extinct.D. People can clone themselves at will.Scanning to get detail informationscanningListen to the passage again and

14、 answer these questions.1 What are the two major uses of cloning?2 Why is it easier to make commercial plant clones than animal clones?3 What was the first clone from an adult animal? At what age did this clone die?4 Why is cloning controversial in some countries?1 What are the two major uses of clo

15、ning?2 Why is it easier to make commercial plant clones than animal clones?The first use is to produce commercial quantities of plants. The second is to research on new plant species and do medical research on animals.Cloning plants is straightforward, but the cloning of animals is very complicated.

16、3 What was the first clone from an adult animal? At what age did this clone die?4 Why is cloning controversial in some countries?The first clone from an adult animal was Dolly the sheep. She died in 2003.Cloning is controversial in some countries for moral and religious reasons.Read the passage quic

17、kly to find the main idea of each paragraph.While-reading : Find the main idea of each paragraph1.Cloning is _ 2.Cloning has _ uses.3.The _ of Dolly.4. The _ of Dolly.5. Peoples _ towards cloning.a way of making an exact copy of another animal and blemstwo majoreffectattitudeWhat do you think is the writers point of view in this reading passage? Is it infavour of cloning or against it?I think the w