任务一：将下列单词或短语归类。
chimneys,factories,mobile phones,planes,motor vehicles,motorcycles,loud music,smoking,littering,building houses,liquid wastes
1. air pollution：______
2. noise pollution：______
3. water pollution：______
任务二：请按以上分类补充更多的词汇。______
任务三：在日常生活中,污染会破坏我们的环境。请结合你的生活环境,与同伴讨论你身边的污染源及合理的治理措施。______

任务一：（此题答案并非唯一）1. chimneys，factories，planes，motor vehicles，motorcycles，smoking，littering，building houses 2. factories，mobile phones，planes，motor vehicles，motorcycles，loud music，building houses 3. factories，littering，liquid wastes 任务二：略 任务三：略