一、听力（共两节，满分35分）
第一节听力理解（共15小题；每小题2分，满分30分）每段播放两遍。各段后有几个小题，各段播放前每小题有5秒钟的阅读。请根据各段播放内容及其相关小题，在5秒钟内从题中所给的A、B、C项中，选出最佳选项，并在答题卡上将该项涂黑。听下面一段对话，回答第1～3三个小题。
1. Where does the talk take place?
A. At school. B. At Kelly’s house. C. At Jason’s house.
2. What is the talk mainly about?
A. Ways to improve the environment.
B. The school project they were given.
C. The reasons Jason wasn’t at school.
3. What do the speakers finally decide to do?
A. To clean up the river. B. To do some tree planting. C. To help the school save water.
