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幻灯片 1

Period 1 Warming up& Reading

幻灯片 2

A strawberry plant The plant produces its own runners. 幻灯片 3

A stem Take cuttings from growing plants to make new ones. 幻灯片 4 They are identical in sex and appearance, who are produced from the same original egg.

幻灯片 5 Dolly the sheep

different from She was c______while the others were born naturally. It is the exact copy of another sheep and the first cloned mammal. loned 幻灯片 6

Its name is Andi, the first genetically modified monkey.

幻灯片 7

Dog Snuppy was created 幻灯片 8

by Korean and American scientists exact _____ of another animal or plant.

Cloning is a way of making an

What is Cloning?

copy 幻灯片 9

Clone, also called reproduce asexually (无性生殖 /繁殖), is the creation of cells or whole animals using DNA from a single “parent”, without using the normal reproductive (有性生殖) process. The clone has the exactly same DNA to the parent. It includes natural and man-made clone. 幻灯片 10 Prediction

What do you think the article is about by reading this headline?

幻灯片 11 What is the main idea of the passage? The passage tells us that animal cloning raised __________ and scientists are not sure about its______. arguments future ? What is the writing style? ? Expositive(说明文) ? Descriptive(记叙文) ? C. Argumentative(议论文)

幻灯片 12 Skimming ___.Cloning has two major uses and successful clone. ___.Cloning is a way of making an exact copy of another animal and plant(definition) ___. The effect of Dolly. ___. It is forbidden to clone human beings. ___.The problems of Dolly. 2 1 4 5 3 幻灯片 13 making an exact copy Definition It is a way of __________________ of another animal and plant. 1)to produce ___________quantities of plants . 2)It is valuable for research on new ______________and medical research on ________. Cloning plants ______________while cloning of animals is ___________

2 major uses of cloning Cloning procedure The first successful animal clone

The cloning of_______________, a _____________ in cloning tech. commercial

plants species animals straightforward

complicated

Dolly the sheep breakthrough 幻灯片 14 Procedure of Cloning a Sheep

幻灯片 15

? ? ? ?

True of false : Four female sheep participate in the cloning of a new sheep. Electricity is needed in the procedure. Sheep B provides a somatic cell for the clone. The lamb is the exact copy of sheep A.

F T T F 幻灯片 16 Which of the following statements about cloning is NOT true according to text? A. Cloning is something that has been developed quite recently. B. Twins that look exactly the same are originally from the same egg. C. Cloning is used by gardeners to make more money. D. Animal cloning is much more difficult than plant cloning.

幻灯片 17 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 patience C. the scientists were rewarded and got lots of money D. many other attempts to clone mammals failed

The determination and patience of the scientists was rewarded/ paid off. 幻灯片 18 The problems of Dolly the sheep ? Encouraging news : It seemed to develop ________ and produced ______in a _______way. ? Disturbing news: It lived for ____ years, half the length of the life of the _______ sheep. ? Its appearance raised a storm of ________and had a great impact on the _____ and public___________. ? It opened everybody’s eyes to the possibility of using cloning to cure _______________and even produce _____________.

The effect of Dolly the sheep

normally natural a lamb 6 original

objections media imagination serious illnesses human beings 幻灯片 19 ? Arguments on cloning ? ? ? Evil leaders hope to clone ___________. Religious leaders raised ________ questions. Many governments _______ research into human cloning. Some countries continued to ___________evidence of the abundant medical aid.

themselves

moral forbade accumulate 幻灯片 20 Advantages of cloning

plant new ? Cloning plants can be useful for research on ____ _____ _______. species quantities ? Cloning plants can produce large ________ of plants for ____. sale medical ? Cloning is valuable for ________ research on animals. cures ? Medical cloning could produce _____for serious illnesses in humans. Problems of cloning

illnesses ? Animal clones may develop the _______ of older animals ? Animal clones may die _______ than the original animals.

younger Evil leaders ? ___ _______may want to clone themselves. moral objections ? There are_____ _________to cloning human beings. 幻灯片 21 ? We can conclude _______

? ? ? ?

Cloning is good for us. Cloning has two aspects. If cloning is used in a correct way it can bring many convenience to us. If cloning is used in an evil way it can cause much trouble.

We should use cloning in a wise way ! 幻灯片 22 As a coin has two sides, everything has two aspects. On one hand, if cloning is used in a correct way it can bring many convenience to us. On the other hand, if cloning is used in an evil way it can cause much trouble. Therefore, we should use cloning in a correct way. 幻灯片 23

幻灯片 24

Unit2 一.词组翻译
? ? ? ? ? ? ? ? 使沮丧 ___________________反对______________________ 赞成; 支持________________一定; 注定(做)_____________ 不时; 偶尔________________使复生___________________ 偿清; 取得成功____________一直; 总是_______________ 另一方面__________________引起道德问题______________ 对?产生巨大影响______________一阵强烈的反对________________ 医疗救助__________________在 20 世纪 50 年代______________ 生产; 产出 _______________科学突破__________________ 禁止人类克隆________________ ? 抵制做某事__________________承担一个项目________________ ? 适合于 _______________________

二.课文填空
1.Cloning is a way of making an _______ copy of another animal and plant. 2. 这种现象也发生在动物身上,从同一个原生卵产生性别与外貌相同的双胞胎也是克隆。

It also happens in animals when twins ______________________________ are produced from the same____________ .
3.___________ (clone) plants is straightforward but the cloning of animals is__________ 。 It is more difficult __________ (undertake). 4. Female sheep B _________ a somatic cell____ the clone. The nucleus of this cell contains all the genes _______(need) to produce a new sheep. 5. The nucleus from sheep B and the eggcell from sheep A are joined ________ (use) electricity. 6. Then ______ the disturbing news that Dolly had become seriously ill. 7.It suddenly opened everybody’s eyes to the possibility of ______ cloning to cure serious illnesses, and even ____________ human beings. 8.The fact __________ the cloned sheep Dolly seemed to develop normally was very encouraging. 9.But cloning scientists ________________ (cast down) to find that Dolly’s illness were more appropriate to a much older animal 10.. 科学家相信克隆人类只是时间问题, 不过克隆人是否已诞生的设想还未得到证实。 Scientists believe human cloning is just ________________ but the ____________ that human clones have already been born hasn’t been proved yet. 11. 不时地会有人提议,克隆技术将有可能使地球上已经灭绝的动物(如恐龙)复活。 ________________ people suggest that the animals that have disappeared from the earth, like dinosaurs, can possibly ____________________ through cloning. 12.另外一些能存活下来并且把这种抗病能力传给下一代。 Others will survive and _______ the ability ___________ that disease to their children. 13.. 就我们现在所知,你不可能克隆那些已经绝种了一万年以上的动物。 _________________ we know now, you cannot clone animals that have been extinct

longer than 10,000 years.

三.Language point
1. In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-make. Explain how they differ. 1. differ vi. different, difference 她的方法跟我的没有很大不同。 Her method ____________________________. 现代飞机跟早期的在很多方面有所不同。 Modern airplanes _____________ early ones ____ many aspects. 对于如何解决问题, 我跟他的意见不一致。 I _____________ how to solve the problem. differ 是不及物动词, 主要有两个义项: “不同, 相异;不同意, 意见相左” 。 1). sb. differ from/with sb. on/about sth.; 2). sth. and sth. differ in? ; 3). sth. differ from sth . 3. 研究克隆的科学家们沮丧地发现多莉得的病更容易发生在年老的动物身上。 Cloning scientists ____________________ that Dolly’s illnesses were more ______________ a much older animal. 不要这么沮丧, 打起精神来! Don’t _______________. Just keep up your spirits. 发现事情的真相使他很沮丧。__________________________________ 4. 这个过程很难实施。 The procedure is difficult to undertake. undertake vt. 着手做, 从事, 进行; 担任, 承担, 答 应

科学家从事这项实验。
The scientist _________________________.

我愿意承担这些变革的责任。
I can _____________________ for the changes. 5. 多莉看来是在正常地成长着,这事很令人鼓舞。 he fact ______ she seemed to develop normally was encouraging. 然后传来了多莉得了重病的令人烦恼的消息。 Then came the disturbing news ____ Dolly became seriously ill. disturb vt. 扰乱, 使不安, 弄乱; disturbed adj. 被扰乱的, 动乱的, 不安的; disturbing adj. 令人不安的。 外面的噪音妨碍我睡觉。 The noise outside disturbed my sleep. 6. 多莉的出现引来了巨大的反对, 激发了传媒的热炒和公众的想像力。 Dolly’s appearance ______________________ and _______________________ the media and public imagination. object 作不及物动词时后接介词 to 或 against. 作及物动词时可接 that 引导的从句。

objection 是名词, 常与 have, take, feel 等连 用构成词组: have objection to take objection to feel objection to 我极不愿意早起。 I feel a strong objection _________________.

object vi.我反对这项计划。 I object to the plan.
7. 政府开始感到不安, 有许多政府禁止对克隆的研究。 Governments became _________and many _______________________ human cloning. sth. Forbid doing sth. sb. to do sth. sb.from doing sth forbid forbad/ forbade forbidden 1). 公共场所应禁止吸烟。 Smoking should be forbidden in public places. 2). The school ______________________ (禁止学生吸烟). 3) He is forbidden ___________________ (进入这个房间). 8. 有些国家比如中国和英国继续收集克隆能提供丰富的医疗帮助的证据。 Some countries such as China and the UK continued to ___________________ of the ___________ medical aid that cloning could provide. accumulate vt. Vi accumulation, accumulative 他因努力工作而积蓄了一笔财富。 He __________________ by hard work. 我不在期间灰尘积聚了起来。 __________________ during my absence.

9.arise 出现 发生 起因于

raise 举起 引起 使产生 提高 饲养

rise 升起 生气 增长 上升 arouse 唤醒 激起 The national flag ----

国旗正在升起。 What problems may ____ when humans are cloned? Dolly’s appearance _____ a storm of objections..
?

and religious leaders ______ moral questions 句子翻译

1.作者的观点是赞成还是反对克隆? Is the writer’s point of view __ _______ __ cloning or against it?

2. 做了一些研究以后没多久,当他发现取得了突破性成功的克隆物多莉羊的命运时,觉得 很沮丧。_______ after he did some research, he felt _____________ when he discovered the ____ of the breakthrough clone, Dolly the sheep. 3. 这两个字的字义完全一样。 The two words are __________ meaning. 4. 他不是那种会被失败击垮的人。(cast down) He is not a man ______________________. 5. The weather _____________________ tomorrow. 明天天气一定会变好。 6..My uncle comes to have dinner with us ______________________________ .(有时 7. 我的意见和他的不相同. Our opinion ______________________ his. 8. 我们双方对应当怎么办的看法是一致的. We are _____________________ each other about what to do. 9. 普通鞋不适于下稻田. Ordinary shoes are not __________________ the rice field. 10. 这本书对其读者产生了巨大的影响. The book ______________________ readers. 11. 为什么有些人反对克隆人类? Why do some people _______ human cloning? 12. 多莉的死,正如她的出生一样,必将引发人们的担心。 Dolly’s death, like her birth, _________________________.


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