1. He suddenly realize that he was ________(处境很危险). (in danger)

2. Dinosaurs suddenly _______(消失，灭绝)on the earth about four million years ago. (died out)

3. They ______(砍倒) many trees around their village in the past. (cut down)

4. He _____(不再)works here. (no longer)

5. We _____(轮流)to clean the classroom. (take turns)

Period two Reading

ⅠQuestions:

part one: skimming:

1.Who is Steve Jones?

　　2.The article is probably about?

　　3.What is one of the things that you can do to help them according to the expert?

part two: scanning

Main reasons for

endangered species 1. 2. 3. 4. 5.

part three: post - reading

1.Steve Jones talks to the group _______.

A.in a lecture half of a university B. when he's howing them around a park

　　C.in a zoo in Birmingham D.in Greece Park in London

2.The environment in which certain animals or plants are used to living is known as their_____.

A.land B.species C.park D.habitat

3. In what way nature seems to be cleverer than human beings?