人教版高中英语选修8 Unit2_Using_language_优质导学案

Unit2 Using language优质导学案
Teaching aim:掌握科普文章的阅读方法
Teaching key points and difficulty
动名词的复合结构
学习过程：
Step 1: Choose the best answer after reading.
1.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
2.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
3. 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 year
Step 2:Read the text, then tell the following sentences are true or false.
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.
Step 3:Give some reasons why it is either impossible or unsuitable to clone extinct animals
Reason 1:
Reason 2:
Reason 3:
Step 4:Diversity in a group of cloned animals Advantage of diversity
Disadvantage of diversity。