听对话或独白，根据对话或独白的内容，从下面各题所给的A、B、C三个选项中选择最佳选项。每段对话或独白你将听两遍。
What are the two speakers mainly talking about?
A. The environmental protection.
B. The environmental problems.
C. The environment and traffic.
What can we learn from the dialogue?
A. The man has very short hair.
B. The woman rides a bike to the company.
C. The woman lives far from the company.