What pollution impressed you most?以下哪张图片给你印象最深刻？
air pollution 空气污染
water pollution 水污染
light pollution 光源污染
noise pollution 噪音污染
In Shanghai, which type of pollution is the most?在上海，哪种污染最严重？
air pollution 空气污染
light pollution 光源污染
water pollution 水污染
noise pollution 噪音污染
other 其它
What pollution do you think has the greatest impact on the environment?你认为以下哪种污染对环境的危害最大？
air pollution 空气污染
water pollution 水污染
light pollution 光源污染
noise pollution 噪音污染
Who need be responsible for the pollution in your view?在你看来，你认为谁应该对污染负责？
What should we do for the environment?你认为我们对于环境应该做些什么？