课件40张PPT。Unit3 Science versus nature
Welcome to the unitLead-inScience is developing so fast that
sometimes it is beyond our imagination.
Man has created many things such as
Radios, TV sets and so on.
What else has been created by man?
Could you give us some examples?Dolly the world's first cloned
adult animal. The
scientists who cloned
Dolly are to stop
experiments involving
genetically modifying
pigs for human organ
transplants because
of concerns that deadly
new diseases could
be passed on to people. Picture-talk The world‘s first
cloned mule,
was born on May
4. He is created
from a cell of
his brother.kitten Rainbow The world's first cloned cat, kitten, named
Cc. It was created using a cell taken from
an adult cat,Rainbow.The world's first cloned pigs were produced
from an adult
female pig using a different technique
from the one that produced Dolly. Five cloned pigsA pair of new-born cloned calves They are the second adult-animal clones research centre said the new technique would be used to breed better cattle strains with higher-quality beef or greater milk capacity. The first cloned monkey is another incremental step toward designing and perfecting new treatments for human genetic disorders.From these pictures, can you identify
the differences between the cloned
animals and normal ones?The first cloned mammal
Dolly
Dolly and Ian Wilmutclone Brainstorming gene geneticgenetically cell embryoorgansheepmammaltissuestem cellbiology Discussions
In your opinion, what might be the differences between these cloned animals and normal ones?
Can these cloned animals lead a normal life as normal animals?
For example, does the mule in Picture 2 run as fast as his brother? Do you think it would be a good idea
to clone humans some day? Why or why not?Unit3 Science versus natureThe perfect copy
Lead-in
Gaur is a kind of endangered Asian ox. Noah, a gaur, was the first clone of an endangered animal born on 8 January 2001. Scientists at Advanced Cell Technology succeeded in cloning the baby gaur. Unfortunately, Noah died two days later. The experiment proved that it was possible to save endangered species through cloning.Skimming and Scanning
Read the article and letters quickly and answer these questions.1.Does the article give an anti or pro-cloning point of view, or both?2.What was the name of the first cloned animal?3.Is Pauline Carter pro- or anti-cloning?BothDollyAnti-cloning1.What is cloning?
2.How many scientists are mentioned in this text? Who wants to clone a human being?Speed-reading Cloning is producing an exact copy of a plant or an animal using its cells.True or False
1.People all over the world are happy about the idea of cloning human beings.
2.Dolly, the first cloned mammal, is exactly the same as other sheep.
3.According to the article, the scientist who created Dolly does not agree with cloning human beings.FNot all peopleFTNot exactly4.Cloning can be used to cure diseases because it can produce new tissues and organs.
5.Colin Jake is against cloning humans, just like Pauline Carter.
6.Cloning human beings is illegal in many countries, so no scientists want to clone human beings.TFNot likeFA few scientistsFill in the form
1.Produce valuable tissues
and organs that could be
used to save human lives2.Cure diseases like cancer3.Help those who are
unable to have children4.Help those who want to
clone their dead children1.May produce a real-
life Frankenstein’s
monster2.Create more disease
in the animal world3.Cloning shows no
respect for humans4.Human life would
no longer be unique5.Having fewer babies
to reduce population,
not cloning moreMore questions
1.What are the different attitudes towards the success of cloning a human cell?
2.What does Ian Wilmut, the Scottish scientist who created Dolly, intend to use cloning for?
3.Who are the three persons in the article related to cloning?1.What are the different attitudes
towards the success of cloning a human
cell?
Valuable tissues and organs can be
produced and be used to save human
lives.
Human beings may be on the way to
producing a real-life monster.
Some people consider cloning human
embryos with the intention to destroy
them shows no respect for human life.2.What does Iran Wilmut, the Scottish scientist who created Dolly, intend to use cloning for? He thinks research efforts should be
concentrated on creating new tissues and
organs that could eventually be used to
cure diseases like cancer.3.Who are the three persons in the
article related to cloning? Ian Wilmut, a Scottish scientist who created Dolly and was shocked when hearing some scientists were considering cloning human beings. He never intends to create copy of humans. Instead, he thinks the efforts of scientists should be directed towards creating new cells and organs that could eventually be used to cure diseases like cancer.Faye Wilson, a woman of 41 years old
who cannot have a baby. She is
desperate to have a baby of his own, a
child that is genetically related to her.Severino Antinori, an Italian doctor,
who is one of the leaders in the cloning
research. He has declared that he wants
to be the first to clone a human being.Reading comprehension:1.The announcement of successful human embryo cloning has caused much debate because________.
A. people still have no clear idea about the results of human cloning
B. valuable tissues and organs can be used to save humans
C. mankind is going to produce terrible monsters
D. people know that nature will punish mankind for human cloningAReading strategy:
Understanding scientific terms1.Read the first and last paragraphs
for an idea of what the article is about. 2.Scan the body of the article. Circle
the words you don’t know.3.Read through the article a few times.2.The success of the cloned sheep Dolly has proved that_________.
cloning will create more diseases in animal world
B. cloned animals will die at a much younger age than normal
C. man has been able to produce an exact copy from an adult cell
D. man can interfere with nature at his willC3.According to the passage, what is the real intention of Ian Wilmut’s cloning research?
A. To create copies of humans in the end.
B. To destroy human embryos in the end.
C. To create new tissues or organs for sale.
D. To cure deadly diseases eventually.D4. How does a woman who cannot give a birth benefit from cloning?
She can have a baby by using another woman’s egg.
B. She can have a baby genetically related to her.
C. She can adopt someone else’s child by cloning.
D. She can have more children.B5. What can we infer from the whole passage?
A. Cloning animals is illegal in Italy.
B. Chinese scientists are trying to benefit mankind by using cloning technology.
C. Chinese scientists want to be the first to clone a human baby.
D. Colin Jake disagrees with the scientists who want to clone a human baby.BRead the text and find out the main idea of each paragraph. Para 1
Para 2
Para 3An announcement about the first cloned human embryo caused much debate.The first cloned mammal was Dolly. Ian Wilmut is shocked that some scientists are considering cloning human beings.Para 4
Para 5
Para 6A woman wants to have a cloned baby.Cloning human embryos is illegal in many countries, but some scientists still want to clone human beings.Chinese scientists continue to research ways in which cloning can benefit mankind.Part D. ECheck the answersD 1 b 2 a 3 d 4 e 5 c 6 g 7 h 8 f E 1 cloning 2 cell 3 successfully
4 immoral 5 right 6 consequences
7 younger 8 humans 9 laws 10 ItalianPost-reading Discussion1.If human cloning was successful, who would be happy apart from the parents?2.Do you think it would be easy for the cloned baby to accept his or her social identity as a cloned human being?3.What would the cloned baby call the original cell owner, mother/ father or sister/brother?
What would the person that had the original cell feel about the cloned baby?
Ex. reading p110-111He kept silent after the judge announced that he was the winner of the competition, which shocked everyone present.
2. He decided to go abroad for further education with the intention og improving his English and finding a better job when he returns.3. Scientists pointed out that if we go on polluting the earth, it will not be fit for us to live on.
4. Just a minute. The food you ordered is on the way.
5. It will take many years to bring the situation in Si Chuang back to normal.
6. I decided to concentrate all my efforts on preparing for the college entrance examination.7. He has nothing for three days and now he is desperate for a piece of bread.
8. The kind couple adopted the orphan, whose parents’ death was related to the serious accident.
9. The students are in desperate need of the books, which must be delivered to the school this week.
10. Tom found it hard to focus his attention on homework, for he had just borrowed a novel he was desperate to read from the bookstore.
11. He didn’t work hard, as a consequence, he ended up failing in the examination, which made his parents disappointed.12. The government should be cautious in its response to the report.
13. Nowadays, the majority of people can’t afford to buy an apartment because the cost is too high.
14. Many years ago, Franklin conducted an experiment on electricity, using a kite.
15. The report urged that all the children should be taught how to escape in a disaster.
