听下面一段对话,回答1-3三个小题。 |
1. What does the speaker think about the causes of the car accidents? |
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A. The causes are serious problems that are difficult to solve. B. The causes are not well understood. C. The causes are clear to see. |
2. What have people done to reduce accidents? |
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A. They have improved public transportation. B. They have trained drivers more strictly. C. They have improved roadway design. |
3. What are people paying attention to today? |
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A. Designing better cars. B. Making more aware of (意识到) the traffic problems. C. Building more roadways. |