Unit 3

Science and nature

Teaching aims and demands:Teaching aims and demands:

1.1. To learn a passage To learn a passage The perfect copy.The perfect copy.

2.2. To arouse the students’ interest in cloning To arouse the students’ interest in cloning and let them join in all the activities and let them join in all the activities designed.designed.

3.3. To practice the students’ abilities of To practice the students’ abilities of reading comprehension and speakingreading comprehension and speaking..

Do you know anything about cloning?

What do you know about them?

Lead in:

Dolly was the first cloned mammal created by a Scottish scientist and his group in 1996. She was exactly the same as her mother, in appearance and in genes.

Do you think it would be a good idea to clone humans some day?

Reading

The perfect copy

Read the passage quickly and answer the following questions:

1. What is cloning?2. What was the name of the first cloned mammal?3. Is Pauline Carter for or against human cloning?

1. What is cloning?

2. What was the name of the first cloned mammal?

3. Is Pauline Carter for or against human cloning?

Cloning is producing an exact copy of a plant or an animal using its cells.

Dolly.

She is against human cloning.

Scanning

Read the passage carefully and decide which of the statements below are true(T) or false(F).

1 、 People all over the world are happy about the idea of cloning human beings. T/F

2 、 Dolly,the first cloned mammal, is exactly the same as other sheep. T/F

3 、 According to the article, the scientists who created Dolly does not agree with cloning human beings. T/F

4 、 Cloning can be used to cure diseases because it can produce new tissues and organs. T/F

5 、 Cloning human beings is illegal in many countries, so no scientists want to clone human beings. T/F

6. Both Colin Jake and Pauline Carter are against cloning humans.

T/ F_

Find the reasons why people are for or against human cloning in the article and write them in the table below.

For human cloning Against human cloning1 produce valuable tissues

and organs that could be used to save human lives

1human life becomes like a crop to be harvested or a product for sale

2 2

3 3

4

5

For human being

1. produce valuable tissues and organs that could be used to save human lives

2.

3.

help those who are unable to have children

help those who want to clone their dead

children

Against human being

1. human life becomes like a crop to be harvested or a product for sale.

2.

3.

4.

5.

may produce a real-life monster

would lead to more disease in the animal world

cloning shows no respect for human life

we should be having fewer babies in order

to reduce the Earth’s population, not cloning

more

Attitudes to human cloning

Persons Reasons

____________

Faye Wilson She is _________ to have a child of her own.

Severino Antinori He has declared that he wants to be the first ______ _______ a human being.

_______________

He is in complete agreement with human cloning, because he wants to clone his daughter who died of heart failure.

Negative

Ian WilumtHe never intends to create _______ of humans. Instead, he thinks research efforts should ______ on creating new _______ and organs that can be used to cure diseases like cancer.

_______________

Human cloning is _______ nature. Human life would just become a crop to be harvested or a product for sale. The Earth’s natural ________ is limited. We should not clone more people.

Wang Lin The whole concept of cloning is not moral. If we ____ with life, we might create problems.There are many ________ problems with cloning. Mankind is not ready for it.

II. Complete the table. (Read the text and Part E)

Attitudes to human cloning

Persons Reasons

_________

Faye Wilson

She is _________ to have a child of her own.

Severino Antinori

He has declared that he wants to be the first _____ _______ a human being.

__________He is in complete agreement with human cloning, because he wants to clone her daughter who died of heart failure.

Positive

Colin Jake

anxious

to clone

Attitudes to human cloning

Persons Reasons

Negative

Ian Wilmut

He never intends to create _______ of humans. Instead, he thinks research efforts should _____________ on creating new _______ and organs that can be used to cure diseases like cancer.

__________

Human cloning is _________ nature. Human life would just become a crop to be harvested or a product for sale. The Earth’s natural _______ is limited. We should not clone more people who may use it up.

copies

tissues

against

Pauline Carter

wealth

focus/concentrate

Attitudes to human cloning

Persons Reasons

Negative Wang Lin

The whole concept of cloning is not moral. If we ____ with life, we might create problems.There are many ________ problems with cloning. Mankind is not ready for it.

toy

real-life

IV. Consolidation: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 cloningB. valuable tissues and organs can be used

to save humans C. mankind is going to produce terrible monstersD. people know that nature will punish mankind for human cloning

A

2. The success of the cloned sheep Dolly has proved that_________.A. cloning will create more diseases in the animal worldB. cloned animals will die at a much younger age than normalC. man has been able to produce an exact copy from an adult cellD. man can interfere with （干涉） nature at his will

C

3. How does a woman who cannot give a birth benefit from cloning?A. She can have a baby by using another woman’s egg.B. She can have a baby of her own.C. She can adopt someone else’s child by cloning.D. She can have more children.

B

4. What can we infer from( 推断） 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 agrees with the scientists who want to clone a human baby.

B

If possible, do you want another person to be exactly the same as

you?

Consolidation test

1. Recite the new words and expressions in the passage.

2. Read the passage more carefully and find the difficult sentences you don’t understand.