听下面一段材料,回答第1至3题。 1. What’s the scientist’s topic? A. The climate in the future. B. The weather at present. C. Our environment pollution 2. What will the sea level be like in the future? A. It will down. B. It will rise. C. It will be the same as now 3. Where will the fresh water come from? A. Rainfall. B. Iceberg. C. Sea water.