第一部分 听对话回答问题
本部分共有10道小题，每小题你将听到一段对话，每段对话听两遍。在听每段对话前，你将有5秒钟的时间阅读题目；听完后，你还有5秒钟的时间选择你认为最合适的备选答案。
() 1. What pollution are they talking about?

A.
() 2. Which sign does the woman refer to?

A.
() 3. How did they go to the ocean park?

A.
() 4. What does Mark want to be?

A.
() 5. What are the speakers mainly talking about?
A. Grasslands.
B. Deserts.
C. Rainforests.
() 6. What's the possible relationship between the two speakers?
A. Teacher and student.
B. Doctor and patient.
C. Mother and son.
() 7. Where does Dad ask Grace to put the wet towel?
A. Around her head.
B. On her shoulders.
C. On her face.
() 8. Where are the speakers probably?
A. By the sea.
B. In the forest.
C. In the desert.
() 9. Why didn't Alice go for a picnic this morning?
A. She changed her mind.
B. It was raining heavily.
C. She was ill at home.
()10. What did the lightning hit?
A. A hotel.
B. A subway station.
C. A factory.