Answer the following questions:

1. Do you like dinosaurs? Where have you seen them? Can you see them in our real life? Why?

2. Do you think it is possible to clone dinosaurs? If yes, do you think that’s good for human beings? Why?

Do you think it possible for people to Do you think it possible for people to

clone a dinosaur ? Why ?clone a dinosaur ? Why ?

•1.What animals have people cloned ?•2.Can we really clone dinosaurs now ?•3.When did dinosaurs disappear from

the earth ?

Task 1

Pre-reading

Dinosaurs are extinct animals.

Would you like to restore them?

= Would you like to _______ dinosaurs ___________?

bring

back to life

A: Elizabeth!

I thought Bob passed away last year.

B: I had him cloned.

= B: Although Bob was dead,

I _________ him ________________ by means of cloning.

brought back to life

Listening: T or F

1. Scientists are still experimenting with cloning mammals because they think it can make money.

2. The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.

3. If we can clone any extinct animals, we should let them live in a zoo.

F

F

F

Please read the passage again, and choose the correct answer.

Scanning

1. The writer of the text_____

A. is excited by the possibility of cloning fierce

and extinct animals.

B. believes that extinct animals can be brought

back to life by cloning.

C. thinks it impossible or unsuitable to clone

extinct animals like dinosaurs .

D. dreams of dinosaurs returning to the earth.

主旨大意

2. The film Jurassic Park is popular because_____.

A. people are interested in the subject of cloning

B. all the actors are dinosaurs

C. it was directed by a scientist who clones dinosaurs

D. it proves very interesting

细枝末节

3.Which of the following is true?____

A. Mice were cloned in 1981.

B. Dolly the sheep was the first cloned

animal.

C. The name of the cloned cow is “Bison”

D. China was successful in cloning twin

calves.

4. The reasons why a group of cloned animals all die of

the same illness do NOT include____.

A. they have the same arrangement

of genes

B. there isn’t enough diversity in

the group for it to overcome illnesses

C. the illness is a new one

D. their arrangement of genes can not

resist that new disease

5. We can infer from the text that____

A. scientists are experimenting to clone dinosaurs

B. dinosaurs will never return to the earthC. cloned animals will only live in the zooD. the DNA of dinosaurs can only survive

10, 000 year

推理判断

Careful reading: answer the following questions:

1.Why shouldn`t you clone an extinct animal if there isn`t ecough diversity in the group?

2.Why is it wrong to clone an extinct animal if it would have to live in a zoo?

3.Why can`t you clone the DNA of animals that have been extinct longer than 10,000 years?

Why shouldn`t you clone an extinct animal if there isn`t ecough diversity in the group?

There will not be enough genetic variation in the group to be able to resist new illnesses.

2. Why is it wrong to clone an extinct animal if it would have to live in a zoo?

It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and incresae its numbers. The zoo is not a natural environment for a wild animal.

3. Why can`t you clone the DNA of animals that have been extinct longer than 10,000 years?

The DNA of animals more than 10,000 years old is not suitable for cloning, for it can`t survive so long.

Writing

写作任务： Give your opinion on cloning

写作要求：注意记叙文的表达方式 要写明白自己的观点，层次要分明。写作建议：本单元主要讲述了“ cloning” 存在的

问题以及人们的态度，文中可适当就此进行发挥。

Discuss in groups and write down the information you get.

After the discussion, the students write a passage according to the writing task.

( There are at least 100 words. )

Checking the articles.

1. Ask the students to check the articles for their partners.

2. Show some articles on the screen, other students should give some advice.

One possible version:

Together with the modernest advances in science and technology, the news that Dolly had been born was announced in 1997.

However, Dolly’s death raised many opinions about cloning. Personally, I would like to agree that cloning may do no good to our human beings.

Firstly, seeing Dolly, we may think that cloning animals can easily develop a disease. They can’t live long. Secondly, we can’t clone animals that have been extinct longer than 10000 years, even if the DNA of dinosaurs could survive this long. Thirdly, based on what we know now, human cloning is just a matter of time but the assumption that human clones have already been born hasn’t been proved yet.

In one word, personally, the chances of cloning animals and cloning human beings living on the earth naturally are merely a dream.