高中英语 Unit 2 Cloning using language课件2 新人教版选修8

Firstly, the Dodo bird is friendly
and not harmful. Then the human beings wouldn't be afraid of it. And humans would be friends
with them.Fra bibliotekSecondly, Dodo bird 's large eggs
STEP 2 READ AND ANSOWE
1.Why should’t you clone an extinct animal unless there is enough diversity in the group?
2.Why is it wrong to clone an extinct animal if it would have to live in a zoo?
3.Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years?
1.Why should’t you clone an extinct animal unless there is enough diversity in the group?
UNIT2
•Using Language
•Reading ,discussing
STEP 1 LEAD-IN
If I give you a chance to clone, what will you restore then?
What will you restore if you have a chance?
and
tasty meat that could be
developed for food. If it is
STEP 4 WRITING
• Paragraph1: the topic of the debate
and
who won
• Paragraph2: the ideas of the winning side
There will not be enough genetic variation in the group to be able to resist new illnesses.
2. Why is it wrong to clone an extinct animal if it would have to live in a zoo?
who w losing their ability to move or think could
be helped by medical cloning. They explained
• The arguments put by the team opposing medical cloning were less strong. They argued in two ways. The first reason was that the procedures were not yet secure. Their second reason was that it took many tries and many potential animals had to be killed to produce one useable embryo for research. They explained that man European countries don’t allow medical cloning research because of this. They quoted Pope John Paul Ⅱ. But their arguments were not so convincing.
It is not a good idea to clone an animal that would have to 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.
• Yesterday there was a very exciting debate at
Xinhua Middle School about whether medical
cloning should be allowed or not .After a lively discussion a vote was taken and the side
3. Why can’t you clone the DNA of animals that have been extinct longer than 10,000 years?
The DNA of animals more than 10,000 years old is not suitable for cloning ,for it can’t survive so long.
arguing for medical cloning won.
• The arguments for medical cloning were very strongly put by the team supporting the motion.
They argued that serious il- ln-esses and people
Great Auk (1844)
Dodo bird (1755)
Auroch (1627) Quagga (1883)
I have chosen the second one---
Dodo bird. I think my choice is the best for the fellow reasons:
STEP 3 DISCUSSING
May the best animal win !
Which extinct animals are worth restoring by means of cloning?
Choose one and use the information to help you argue why this animal should be restored to the earth.
• Paragraph3: the ideas of the other side
• Paragraph4: conclusion and your
• Should MedicAalSCAloMniPnLgEbeVAERlloSwIeOdN:
•
A Debate at Xinhua Middle School