听下面一段材料,回答第1至3题。 |
1. Where does the conversation most probably take place? |
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A. In the classroom. B. At home. C. In a bus. |
2. What has the woman been thinking about recently? |
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A. The environmental protection. B. The convenience of public transportation. C. The explosion of the world population. |
3. How many aspects did the man mention when he talked about sustainable development? |
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A. One. B. Two. C. Three. |