高二英语人教新课标选修8 Unit 2 Cloning reading II the return of the dinosaurs 课件(共18张PPT)

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名称 高二英语人教新课标选修8 Unit 2 Cloning reading II the return of the dinosaurs 课件(共18张PPT)
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更新时间 2018-12-13 17:31:21

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课件18张PPT。Unit 2 ReadingⅡThe Return of the Dinosaurs?
霸王龙 tyrannosaurus剑龙stegosaurus雷龙 brontosaurus翼龙pterodactyl What’s the main idea of the text?
Para1 explain the impossibility of cloning dinosaurs
Para2 conclude that it’s just a dream
Para3 introduce the topic of the passage Reading Comprehension IWhat 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).Why is it either impossible or unsuitable to clone dinosaurs.? (Give some reasons .)Reason 1:
Reason 2:
Reason 3:DNA
Diversity
HabitatScientists are still experimenting with cloning mammals because they think it can make money.
If we can clone any extinct animals, we should let them live in a zoo.
Reading Comprehension Ⅱ1. Why is it wrong to clone an extinct
animal if it 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.2. Why shouldn’t you clone an extinct animal if there isn’t enough diversity in the group? Because there will not be enough genetic variation in the group to be able to resist new illnesses. Summary: A good passage usually has a clear organization or structure.Bullet points
(first, second, third…)
Good or useful sentence patterns
(transitions 连词)
The structure : the three-paragraph form (三段式)
WritingThe cloning of human beings
From time to time people suggest that can 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,
Secondly,
Finally,
So I think, based on what we know now, you cannot
. It is merely a dream.

What’s your opinion of cloning dinosaurs?
What’s your opinion of cloning human beings? Free TalkDiscussionThe Cloning of Human Beings Stem cells(干细胞) are responsible for developing and
repairing the body throughout life. As a result, they might
be used to repair damaged or diseased organs and tissues.
Researchers are looking on cloning as a way to create
genetically engineered human stem cells for research and
medical purposes.
To clone or not to clone: that is the question. Human
cloning is highly controversial and raises a number of
problem. Why would people want to clone humans? One
important reason is to help childless couples have children.
From a technical point of view, before humans are cloned,
we need to have a good idea of the risks involved. Cloning humans does give rise to some misgivings(误解),
raising a number of moral problems involved. In fact, the
social influences of producing humans artificially were
brilliantly explored in the famous novel Brave New World
by Aldous huxley, and also in the movie The Island.
Human cloning is basically about creating a genetically
identical copy of a previously existing person. Why would
some choose to clone human beings? Well , generally, it can
make couples unable to have babies have own children.
Replacing a dead child is also another reason why some
people have expressed interest in the technology.
“当然应该‘克隆’人,如果谁第一个掌握了这个技术,他就是我真正的、也是唯一的竞争对手。”
— 比尔·盖茨
Natural selection and survival of the fittest.
---Charles Darwin
物竞天择,适者生存。 ---查尔斯·达尔文
“当然应该‘克隆’人,如果谁第一个掌握了这个技术,他就是我真正的、也是唯一的竞争对手。”
— 比尔·盖茨
Natural selection and survival of the fittest.
---Charles Darwin
物竞天择,适者生存。 ---查尔斯·达尔文
Finish your writing after class.Thank you.finish