听对话,回答问题。 1. Where has Jack been? A. To a car factory. B. To a park. C. To a farm. 2. Why has the lake become dirty? A. Because there was no one to protect it. B. Because there were too many dead fish. C. Because the visitors threw rubbish into the lake. 3. What did Jack take to the leader of the park? A. Some news. B. A bottle of water and some dead fish. C. A report.