多选题The most important factor of haze in Beijing is _______简答题Among the following options, which one is not the impact of haze on human health? A、It prones to cause goiter B、It reduces visibility and prones to cause traffic accidents C、It prones to cause cardiovascular disease and respiratory disease D、It may cause hematotoxicity and thrombosis多选题According to the Emergency Plan for Heavy Air Pollution in Beijing, if it is predicted that heavy pollution or serious pollution will occur alternately in the next three days, which of the following level of early warning should be issued?判断题What measures had the government taken to achieve the APEC blue?多选题Which of the following option is not the main measure to control Beijing's haze?