Unit 3Unit 3

The perfect copy

Reading

Title understandingTitle understanding

How do you understand the word copy?

A. model

B. clone

C. similarity

D. imitation scientific termscientific term（科学术语）（科学术语）

The perfect copy

Four hundred years ago, Chinese people created the cloned images in Journey to the west, but now it has become reality in life.

“Cloning” is a new technology which produces an exact copy of a plant or an animal using its cells.

Scientific terms Scientific terms cloning

1

2

3

1

tissue embryoorgan

Cell

cloning

mammal

Fast reading: Match each paragraph with its correct main idea.

Para 1

f. An announcement about the first cloned human embryo caused much debate.

b. The first cloned mammal was Dolly.

a. Ian Wilmut is shocked that some scientists are considering cloning human beings.

d. A woman wants to have a cloned baby.

c. Cloning human embryos is illegal in many countries, but some scientists still want to clone human beings.

e. Chinese scientists continue to research ways in which cloning can benefit mankind.

Para 4

Para 3

Para 2

Para 5

Para 6

1

2

3

2Detailed reading

Main idea: Different________ towards the success of cloning a human embryo

• Valuable human tissues can be produced and be used to save human lives

• Mankind may be on our way to producing a real-life Frankenstein’s monster.

attitudes

Paragraph 1

• On the one hand:

• On the other hand:

Frankenstein

Frankenstein is a scientist. He creates a monster by experiment. The monster is kind, and ready to help others. But he is not accepted by the society just because of his ugly appearance. People around him refuse his kind offer and turn him down. Some even drive him away. He is eager to get love and happiness, but unfortunately what he gets is merciless chasing. In all his life, he lives a miserable life. At last, he cannot bear all these. He chooses to avenge humans. At last, he dies together with his creator, Frankenstein.

Frankenstein’s monster

• Frankenstein is the character of a science fiction written by Mary Shelly.

• If we call somebody Frankenstein nowadays, we mean that he is destroyed by something he has created.

Paragraphs 2 ＆ 3Make an introduction to the sheep

Name:

Title(头衔 ):

Creator:

Year of birth:

Year of death:

Dolly

The first cloned mammal

Ian Wilmut, a Scottish scientist

1996

2003

• Why were many people worried about the birth of Dolly?

Cloning would lead to more diseases in the animal world.

According to paragraph three, 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

Paragraph 4

Faye Wilson

What is Faye Wilson’s problem?

She can not have a baby. What is her wish?

She is anxious to have a child of her own through cloning.

★

★

Paragraph 5

Severino Antinori

What is Severino Antinori’s attitude towards human cloning? For or against? Why?

For.

Because he wants to be the first to clone a human being.

AA

This passage is most probably taken from ______________.

BB

CC DD

a geography textbook

a guidebook

a science fiction

a newspaper article

Reading

Pauline Carter thinks human cloning is ________. Human life would just become a _______ to be harvested or a _______ for sale.

Colin Jake is in__________ ___________ with human cloning

wrongcrop product

complete agreement

Two Letters

What are the two writers’ attitudes towards cloning?

Pauline Carter

Colin Jake

positive

negative

neutral

positive

negative

neutral

??

Competition

Listen to the tape and then work in groups to find the reasons why people are for or against human cloning in the article and letters.

For human cloning Against human cloning

1. 1.

2. 2.

3. 3.

4. 4.

…………

help those who cannot have a baby

produce valuable human tissues that could be used to save human lives

might produce a real-life Frankenstein’s monster

would lead to more diseases in the animal world

show no respect for human life

should be having fewer babies in order to reduce the Earth’s population, not cloning more

Competition

cure diseases like cancer

help those who want to clone their dead children

More contributions to human

More world champions

China, a more harmonious community

If cloning goes wrong, what will happen?

Fun picturesFun pictures

A lion or a kangaroo?

A bird or a dog?

A dog or a man?

Summary

There is no forbidden field in science, but we must make sure that technology is under control.

科学无禁区，技术应节制

A debate in pairsA debate in pairs

Are you for or against human cloning?

for against

Your reasons

For human cloning Against human cloning

1. 1.

2. 2.

3. 3.

4. 4.

…………

help those who cannot have a baby

produce valuable human tissues that could be used to save human lives

might produce a real-life Frankenstein’s monster

would lead to more diseases in the animal world

show no respect for human life

should be having fewer babies in order to reduce the Earth’s population, not cloning more

Competition

cure diseases like cancer

help those who want to clone their dead children

1. I am for… 2. I am in complete agreement with …3. I support that…4. From my point of view, it seems that …5. On a personal note, human cloning … 6. As far as I am concerned . I (don’t) support7. I am strongly against…8. Personally, I agree / disagree because … 9. For one thing,… For another , …/ on the one

hand…on the other hand …10.In short (In brief / In a word), I firmly (don’t)

support the view that …

Useful expressionsUseful expressions

Assignment Write a letter to the editor and express your opinion about cloning human embryos. Search for more

information about

cloning and share it

with each other.

What’s your attitudes towards human cloning?

On a personal note, I firmly supportthe view that cloning is beneficial in the following two reasons. On the one hand, ________. On the other hand,______.

As far as I’m concerned, human cloningwill have some bad effects . The reasons are as follows. First of all,_____. What’s more,________. Last but not least,________.