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外研2003课标版《Writing》集体备课PPT课件优质课下载
霸王龙 Tyrannosaurus Rex /T.Rex
剑龙 stegosaurs
雷龙 brontosaurus
翼龙pterodactyl
三角龙 Triceratops
give birth to
Egg cell with nucleus
Egg cell without nucleus
Somatic cell
Nucleus
Jioned by elctricity
carrier
Embryo
How to produce a sheep
The return of the Dinosaurs?
Para1 explain the impossibility of cloning dinosaurs
Para2 conclude that it’s just a dream
Para3 introduce the topic of the passage
What’s the main idea of the each paragraph?
What’s the main idea of the passage?
1. Who are interested in cloning extinct animals besides the film makers?
2.List some reasons why it is either impossible
or unsuitable to clone extinct animals.
3.Why is it wrong to clone an extinct animal if
it would live in a zoo?