BEIJING, Jan. 15 (Xinhua) -- Beijing issued a yellow alert for air pollution at mid-night Sunday as a new bout of smog will hang over the city until Tuesday night.
According to the municipal environmental protection bureau, Beijing's air quality will plunge from "fairly good" on Sunday to "seriously polluted" on Monday.
Air quality will improve on Tuesday night with the arrival of cold air.
According to the National Meteorological Center, the smog will also hit northern and central China provinces of Hebei, Shandong, and Henan.
Beijing has a four-tier alert system for air pollution, with red being the highest, followed by orange, yellow and blue.
When a yellow alert is issued, it means the Air Quality Index will exceed 200 for 48 hours. Outdoor construction will be limited while more road cleaning will be conducted.
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生命中的感动(Life touched)
婚姻、爱情与自由(Marriage, love and freedom)
The Development of a Private Car,The Development of a Privat
Going abroad for studies
中考英语写作专练-Lost and Found
守时(Punctuality)
Which Mode of Travel Do You like?,Which Mode of Travel Do Y
比较美国的初中生活和中国的初中生活有什么不同
怎样能够强身健体(How to Be Stronger)
词典的优缺点(The Advantages and Disadvantages of Dictionary)
通知
Large Companies and Small Companies,Large Companies and Smal
A Letter to the University President,A Letter to the Univers
我的同学(My Classmate)
说说学生们的MP3和MP4(MP3 and MP4 Among Students)
中考英语写作专练-Announcement/Notice
我的卫士(My Guardsman)
体育运动的好处和坏处(Positive and Negative Aspects of Sports)
人文科学(The Humanities)