听下面一段材料，回答第1-3题。 1. What are the speakers talking about?
| 听下面一段材料，回答第1-3题。 |
| 1. What are the speakers talking about? |
| A. A way to improve air quality. B. A problem with traffic rules. C. A suggestion for city planning. |
| 2. What does the man suggest? |
| A. Limiting the use of cars. B. Encouraging people to walk. C. Warning drivers of air pollution. |
| 3. What does the woman think about the man’s idea? |
| A. It’s interesting. B. It’s worth trying. C. It’s impractical. |
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