听下面一段材料，回答1-4题。 1. Who is the speaker? A. A news reporter B. A specialist in oil spill prevention C. An oil company technician 2. What is the main topic of the report? A. Where the oil spoil occurred B. What caused the oil spill C. How the soil was treated 3. Who volunteered to clean up the oil? A. Storekeepers, reporters, business people and others B. Business people, storekeepers, students and others C. Farmers, scientists, teachers and others 4. What does the oil company promise to do? A. To prevent any more oil spills B. To get rid of all the old ships at once C. To clean up the oil at the Seaview Beach soon