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《Using LanguageⅡ》优质课PPT课件下载
The Return of the Dinosaurs?
Answer the following questions:
1.Have you ever seen the film Jurassic Park?
Do people like this film?
What animals do you see in the film?
Are they real dinosaurs?
2.Do you like dinosaurs?
Can you see them in our real life?
Why?
Read the text, then tell the following sentences are true or false. ( Students can discuss in pairs. )
Scientists are still experimenting with cloning mammals because they think it can make money.
The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.
If we can clone any extinct animals, we should let them live in a zoo.
F
F
F
Reading -- I scanning ( 5ms )
Give some reasons why it is either impossible or unsuitable to clone extinct animals
Reason 1:
Reason 2:
Reason 3:
You need perfect DNA
There is not enough diversity for cloned animals to overcome new diseases.
It would be unfair to clone any extinct animals if they would have to live in a zoo.
Advantage of diversity