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选修8unit2 the


Revision
1.Be different from 1. differ from 2. cast down 3.have a great impact on 4. in favour of

2.depress;not happy
3.Have a great effect on

4.Support
5

.Be against…

5. object to/make an objection to

What’s your opinion of cloning Discussion Free beings? Talk human

What’s your opinion of cloning dinosaurs?

Writing

The cloning of human beings
dead person can

From time to time people suggest that

possibly

be brought back to life through cloning. Unfortunately, with what we know now, this is either impossible or unsuitable. Here are the reasons: Firstly,

human egg cells and embryos needed for cloning research are difficult to obtain.

Secondly, some evil people may hope to clone themselves to attain their ambitions. Finally,

it may cause moral questions.

So I think, based on what we know now, you cannot clone human beings . It is merely a dream.

Please enjoy some pictures about dinosaurs.

霸王龙 tyrannosaurus

剑龙stegosaurs

三角龙triceratops

雷龙 brontosaurus

翼龙pterodactyl

Look at the following pictures and think which film they are from ?

Do you think it possible for people to clone a dinosaur ? Why ?

Fast Reading Match the main idea with each paragraph.
Para1 Para2 Para3 explain the impossibility of cloning dinosaurs conclude that it’s just a dream introduce the topic of the passage

What is the writer’s attitude towards cloning the dinosaurs?
A. Supportive. B. Neutral (中立的). C. Negative (否定的). D. Subjective(主观的).
objective客观的,

positive肯定的
impartial 公平的 arbitrary武断的 optimistic乐观的 pessimistic悲观的 critical持批评态度的 cautious谨慎的

indifferent冷漠的 …

Fill in the blanks or tell True or False Jurassic Park 1.The popularity of films such as_____________, in which a scientist clones several kinds of extinct __________dinosaurs, proves how the idea______ struck a mixture of___________________ ____________ fear and excitement into people’s hearts. _____________. 2.Scientists are still experimenting with cloning mammals because theycloning can the think it of make money.still a new science. mammals is

Careful Reading para.1

Which of the following is true?____
A. Mice were cloned in 1981. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison”

D. China was successful in cloning twin calves.

Para2
1. The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning. Evidence: Unfortunately, with what we know now, this is either impossible or unsuitable. initial requirement 2.The_______ __________ is that you need perfect DNA. efforts in vain 3. All_____ of cloning an animal will be _______ diversity if there is not enough _______ in the group to overcome illnesses _______ _________.

Fill in the blanks according to the passage.
Reasons for ? Perfect DNA is needed. _______ its ? There is not enough diversity impossibility ________ in the group. suitable habitat ? A (n) ______________ would be needed for the cloned extinct animals.

Para3

__________ Conclusion

The chance of dinosaurs returning to the earth is ______________. merely a dream

Discussion

Great Auk (1844)

Dodo bird (1755)

Aurochs (1627)

Quagga (1883)

Writing Let’s bring the back to life
is the most suitable animal to be brought back to life. Here are the reasons: Firstly, Secondly, Finally, So I think would be the best choice to be brought back to life.

Homework
Finish your writing after class.

finish


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