文档介绍：
is defined as "serious pollution."
Many rushed to buy face masks and air purifiers to ward off 避开，挡住the choking smog, a result of decades of breakneck economic growth. The dirty air even forced all primary and middle schools in the eastern city of Nanjing to close for two days.
"The smog is everywhere," said Xiong Yuehui, head of the science and technology department of the Ministry of Environmental Protection, at a meeting on Sunday in Shanghai. "If one place is
free of smog, then it will be a news," he said.
The world's second-largest economy does not lack the technology and funds needed to clean up the air, but lacks the implementation of concrete efforts, Xiong said.
About 22 million tonnes of sulfur dioxide二氧化硫 are emitted 向空气中发出。。。into the air untreated each year while the remaining two thirds of the total emissions, or 40 million tonnes, have their sulfur removed, according to data from the ministry.
However, Luo Jianhua, secretary-general of the China Environment Service Industry Association of the All-China Federation of Industry & Commerce, expressed doubt about the authenticity of the sulfur removal rate. He believes that many polluting companies often shut down their pollution treatment facilities to cut costs.
Bian Cheng, chairman of environmental protection equipment manufacturer Keda Industrial Co., Ltd., blamed loose supervision for the smog and called for tough law enforcement.
Wu Xiaoqing, vice minister of environmental protection, said the agency was working to put in pl