全新版大学英语(第三册)第二版电子教案Unit8 PPT课件.ppt

B R _ main
Word Web
Warm-up Questions
Test Your Knowledge on Cloning
prehension
Background Information
B R _ English Song _ main
Background Information
Hwang Woo-Suk
Stemagen
Cloning
Dolly
The Pope
B R _ Sales Promotion _ main
Word Web
What words or expressions will occur to you whenever we mention “cloning”? Write down as many words and phrases as possible.
identical
unethical
embryo
replicate
horrifying
reproductive
scientist
stem cell
risk
Dolly, the sheep
human cloning
gene
disputable
cure an
scientific advance
sci-fi film
organ
B R _ Introductory Remarks
Warm-up Questions
1. What is cloning? Are there different types of cloning?
2. How can cloning technologies be used?
3. What animals have been cloned so far, and for what purpose?
4. ans be cloned for use in transplants? If so, give examples.
5. What are the risks of cloning?
6. Should humans be cloned?
B R _ Listen plete
1. The concept of “cloning” was originally a science fiction idea.
F
Cloning was not originally a sci-fi idea although sci-fi writers have enjoyed playing about with the concept. Clones have always occurred in nature.
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Test Your Knowledge on Cloning
2. “Clone” comes from the ancient Greek word meaning “trouble”.
F
The word “clone” comes from the ancient Greek word meaning “twig” ., a division from the main branch.
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B R _ She Works Hard for the Money 1
3. One cell could theoretically launch a thousand clones.
T
It takes a whole cell to start a clone — but of course there’re millions of ically identical cells in an an.
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4. Dolly the sheep was grown in a test-tube.
F
Although the cloning process takes place in lab conditions, the embryo has to be transferred into a surrogate mother to develop into a whole animal.
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B R _ She Works Hard for the Money 2
5. Cloned animals have the same personality as their “parent”.
F
Cloned animals may or may not have the same personality as their parent — personality is partly determined by the environment