听一段对话，回答第11至12小题。答题完毕，请等待“嘀”的信号，进入第一篇短文。
() 11. What is the girl learning about?
A. Deserts.
B. Wetlands.
C. Grasslands.
() 12. Why does the boy like forests?
A. They are home to many birds.
B. They provide humans with fresh air.
C. They have huge temperature differences.

11.B 12.A

听第一篇短文，回答第13至15小题。请根据短文内容，选择正确答案，完成信息记录表。答题完毕，请等待“嘀”的信号，进入下一篇短文。
Name: Lisa
School: Green Middle School
Date of birth: 13
Interests: learning about ecosystems, planting trees
Phone number: 14
Free time: 15
() 13. A. October 5, 2009 B. October 15, 2009 C. October 5, 2008
() 14. A. 87563219 B. 87563291 C. 87562319
() 15. A. On Saturdays B. On Sundays C. On Friday evenings

13.A 14.A 15.B

听第二篇短文，回答第16至20小题。
() 16. What is the main idea of the passage?
A. How to protect oceans. B. The importance of ecosystems.
C. What deserts are like.
() 17. What produces much oxygen?
A. Forest. B. Wetland. C. Ocean.
() 18. What are wetlands called?
A. The “heart” of the earth. B. The “kidneys” of the earth.
C. The “lungs” of the earth.
() 19. How do forests help the earth?
A. They produce oxygen. B. They store water. C. They prevent floods.
() 20. What can we do to protect ecosystems?
A. Save the water.
B. Become a member of environmental groups.
C. Care for pollution.

16.B 17.C 18.B 19.A 20.B