Twins
They are born naturally and
identical in sex and appearance.
A strawberry plant
The new plants that grow from the runners
are exact copies of the original plant.
一株草莓依靠它沿地“爬走”的匍匐茎,
一年内就能长出数百株草莓苗。
富贵竹插枝即活
The gardener should cut the plant, then the
cutting produce another new plant.
1996 cloning sheeps
2001 cloning cattle
我国成功繁殖克隆兔
体形要比普通兔大许多
2002年5月
中旬成功地
繁殖了一只
胚胎细胞
克隆兔。
2002 cloning cats
2002年4月十六
日美国第一头
克隆牛“艾米”
产下牛犊喜作
妈咪。
2005 cloning dogs
In pairs discuss what you understand
about cloning. Then list the questions
you want to find out. Share your lists
with one another.
Pre-reading
1. What is a clone?
A clone is an animal or a plant produced
naturally or artificially from the cells of
another animal or plant and is exactly
the same as it.
2. How is a clone produced？
The cloning of plants is simple and relatively
easy. It can be done by taking cuttings (man-
made cloning) or letting the produce its own
runners (natural cloning). The cloning of
animals is more complicated. It was not
achieved until 1996 and is fully explained in
the first reading.
3. What benefits can humans gain from cloning？
Medical cloning can help cure serious illnesses
that ruin one’s quality of life (such as
Parkinson’s disease or Alzheimer’s disease).
It can help infertile people have babies.
4. What problems may arise when humans
are cloned?
• People may want to clone themselves so they
can live forever.
• People may want to clone dead children.
• People may want to clone their favourite pets.
1. What is the main topic?
A. Cloning. B. Dolly the sheep .
C. It will lead us to some places.
2. What is the writing style?
A. Expositive(说明性的). B. Descriptive.
C. Argumentative(议论性的).
A
A
Learning tips:
The passage is written in the expositive style.
That is to say the text is in the third person
and in factual and formal language. It gives
different points of view and does not try to
persuade the reader to make up his/her own
mind.
3. Dolly the sheep _____.
A. looked exactly like the sheep that provides
the egg.
B. was the exact copy of the sheep that
provides the nucleus.
C. looked like the sheep that gave birth to it.
D. had the characteristics of all three sheep.
B
4. It can be inferred from the passage that
a cloned animal_____.
A. usually lives as long as the original one
B. usually lives longer than the original one
C. usually dies earlier than the original one
D. is usually as healthy as the original one
C
5. Which of the following is not an advantage
of cloning?
A. Cloning can be used for medical purposes.
B. Large quantities of food can be produced
by cloning.
C. Cloning can help keep animals from
becoming extinct.
D. Famous persons who have passed away
can be cloned.
D
6. Which of the following is wrong?
A. Cloned people would live forever.
B. Cloned people may be killed at will for
medical aid.
C. A woman would have difficulty
recognizing her real husband.
D. Men will die out because a woman can
give birth to a baby without a husband.
D
7. Which statement is NOT true?
A. Cloning is something that has been
developed quite recently.
B. Twins that look exactly the same are
originally from the same egg.
C. Cloning is used by gardeners to make
more money.
D. Animal cloning is much more difficult
than plant cloning.
A
8. The cloning of Dolly the sheep succeeded
because _____.
A. its easier to clone a sheep than other animals
B. the scientists were determined and worked
hard with patience
C. the scientists were rewarded and got lots
of money
D. many other attempts to clone mammals
failed
B
9. The lamb is the clone of the cell from sheep
because _____.
A. it provides the egg cell
B. it gives birth to the lamb
C. it provides the nucleus
D. it is a female sheep
10. The sheep that donated the somatic
cell most probably lived ____ years.
A. 3 B. 6 C. 9 D. 12
C
D
11. The main idea of the text is ______
A. animal cloning is very valuable and can
benefit the world.
B. animal cloning could be misused by bad
people so it must be forbidden.
C. animal cloning is well developed because
Dolly the sheep was born.
D. animal cloning raised arguments and
scientists are not sure about its future.
D
12. Which of the follow is NOT a problem or
danger of cloning mentioned in the text?
A. Evil leaders may want to clone themselves.
B. Animal clones may develop the illness of
older animals and may die younger than the
donor animals.
C. There are moral objections to cloning
human beings.
D. Too much cloning may lead to the
destruction of the balance of nature.
D
13. We can infer from the last three paragraphs
that _____.
A. the normal development of Dolly had no
effect on the cloning of other species.
B. Dolly’s serious disease and final death
disturbed the whole world.
C. Dolly successfully cloned a new lamb with
the help of cloning scientists.
D. there were arguments about animal cloning
and concerns about the future of cloning.
D
Careful reading
The main idea of each paragraph.
• Cloning is ____________________________
____________________________
2. Cloning has ____________ uses.
3. The _________ of Dolly.
4. The ________ of clonging in society.
5. The attitudes towards cloning.
a way of making an exact copy
of another animal and plant.
problems
two major
effect
It happens both in ________ and in _______.
They can be cloned by __________ and ________.
plants animals
themselves humans
Natural clone Man-made clone
Para 1: The definition of cloning
1. How many major uses do cloning have?
Firstly, …commercial…
Secondly, …research…
2. How many female sheep participate in the
cloning of a new sheep?
3. When was the cloning of Dolly
the sheep born?
3
Para 2: The major uses and
procedures of cloning
1996
About
Dolly
the
sheep
Encouraging news: Dolly developed
__________.
Disturbing news:
normally
Dolly lived for six years and
a half years, half the length
of the life of the original
one.
Para 3: The problems of Dolly
The word “controversial” in Para 4 probably
means ________.
A. complicated
B. arguable
C. important
Para 4: The impact of Dolly
B
True or false:
1. People feared that Cloned Hitlers would do
harm to the world.
2. All the research into human beings will be
forbidden.
3. Some countries will use cloning in a wise way.
Para 5: People’s reaction to cloning
Many governments forbade research into
human beings.
T
T
F
Hitler: an evil
leader
意大利狂人医生:
安蒂诺里
冒死也要克隆人的
科学家:布瓦瑟利耶
1 Read the passage and answer these
questions.
Comprehending
1. What are the two major uses of cloning?
The first use is to produce commercial
quantities of plants. The second is to
research on new plants species and do
medical research on animals.
2. Why is it easier to make commercial
plant clones than animal clones?
Cloning plants is straightforward, but
the cloning of animals is very complicated.
3. What was the first clone from an adult
animal? At what age did this clone die?
4. Why is cloning controversial in some
countries?
The first clone from an adult animal was
Dolly the sheep. She died in 2003.
Cloning is controversial in some countries
for moral and religious reasons.
Problems or dangers
of cloning
Advantages of cloning
Animals may
Develop the illnesses
of older animals.
• Fill in the chart.
Medical cloning
could produce cures
for serious illnesses
in humans.
Animal clones may
die younger than the
donor animals
Evil leader may want
to clone themselves.
There are moral
objections to cloning
human beings.
Cloning plants can
produce plants of
similar quality for sale.
Cloning plants can be
useful for research on
new plant species.
Cloning can help save
endangered animals.
3 What do you think is the writer’s point
of view in this reading passage? Is it in
favour of cloning or against it?
I think the writer is
because
impartial
he/she does not state any personal
opinion about cloning.
1. Do you support the idea of producing human
embryos(胚胎)for medical purposes?Why?
2. Do you think it a good idea to use cloned
humans for organ(器官)transplants? Why?
3. Do you think a cloned human should have
human rights? Why?
4. Do you think cloned humans will have the
same talents as the original ones? Why?
Discussion
As a coin has two sides, everything has two
aspects. First, if the cloning is used in a correct
way it can bring many conveniences to us. Such
as: curing serious illnesses and being used to
produce commercial qualities of plants. On the
other hand, if the cloning is used in an evil way
it can cause much troubles: such as moral
questions.
Practice activity: Debate
ＶＳ
Are you in favor of cloning or
against cloning? What is your
point of view on it?
1. Translate the procedure of cloning Dolly
the sheep into Chinese.
2. Finish the Ex.1, 2, 3 on Page13.
Homework
3. Write a short passage about the advantages
and disadvantages of cloning. At the end of
your passage, you can add your own opinion.
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