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选修8《Using LanguageⅠ》优质课PPT课件下载
B. believes that extinct animals can be brought back to life by cloning
C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs
D. dreams of dinosaurs returning to the earth
ordinary people
Reasons
diversity
suitable habitat
Conclusion
merely a dream
1. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group?
There will not be enough genetic
variation in the group to be able to
overcome new illnesses.
2. Why is it wrong to clone an extinct
animal if it would live in a zoo?
Because it is not a suitable habitat to develop and increase its numbers.
The zoo is not a natural environment for a wild animal.
Is cloning cruel?
Xiao Qing and Rachel are discussing whether cloning is cruel to animals or not.
Listen to the tape and choose the ideas for them
Rachel's ideas about cloning
Xiao Qing’s ideas about cloning
It is cruel to animals.
Scientists are doing a wonderful job.
It may bring people’s favourite pets back to life.