听一段对话,回答第11、12小题。
()11. Where will the speakers go this weekend?
A. To a local zoo.
B. To Yancheng Wetland.
C. To Zhalong Nature Reserve.
()12. What will they do there?
A. Watch the animals.
B. Feed the birds.
C. Clean the natural home.

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。
Freshwater ecosystems
Introduction
They are made up of rivers, lakes, and underground streams.
Importance
- They give humans clean water to drink.
- They provide food and for living things.
- Farmers use freshwater to water their plants.
Protection
- Stop dropping litter into water bodies.
- Don't pour the into the rivers, lakes or streams.
()13. A. seas B. oceans C. ponds
()14. A. all the nutrients B. cover C. energy
()15. A. hot water B. drinking water C. wastewater