Using LanguageⅡ教案设计

B8U2 Using language导学案

Unit 2 Cloning Text 2 The return of the dinosaurs?

Learning Aims:

1.

Learn the key useful words and expressions.

2.

Grasp the content of the passage. Learning procedures:

Step I. Lead-in Questions : 1. Have you ever seen the film Jurassic Park ?

2. Do you like dinosaurs?

3. Do you think it is possible to bring the dinosaurs back to life by cloning?

Step II. Skimming Skimming the passage and answer the question : Is it possible to bring the dinosaurs back to life by cloning ? Why ? Step III. Scanning 1. Read the text and choose the best answer according to the text. （

）

⑴. 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.

（

）

⑵. 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 ）

⑶. 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. （

）⑷.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 them to overcome illnesses C．the illness is a new one D．their arrangement of genes cannot resist that new disease

（

）

⑸.We can infer from the text that ________.

A．scientists are experimenting to clone dinosaurs B．dinosaurs will never return to the earth C．cloned animals will only live in the zoo D．the DNA of dinosaurs can only survive 10,000 years Step IV Careful-reading Read the passage carefully and then decide whether the following statements are True or False.

1.

Scientists are still experimenting with cloning mammals because they think can make money ?

2.

Diversity in a group helps prevent animals from dying of the same illness.

3.

Zoos are appropriate to cloned animals.

4.

4. Scientists can only clone animals extinct 10 000 years ago. Step V. Excercises