Thick smog to choke N. China cities
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E-mail China Daily, November 21, 2014
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Beijing's air quality index hit 348 at 4 pm with the index of PM2.5, the smaller but more harmful particles, also reaching the same level, said the website of the Beijing Environmental Protection Monitoring Center. [Photo/Chinanews.com] |
![Beijing's air quality index hit 348 at 4 pm with the index of PM2.5, the smaller but more harmful particles, also reaching the same level, said the website of the Beijing Environmental Protection Monitoring Center. [Photo/Chinanews.com]](http://images.china.cn/attachement/jpg/site1007/20141121/001fd04cf03a15d8f66e03.jpg "Beijing's air quality index hit 348 at 4 pm with the index of PM2.5, the smaller but more harmful particles, also reaching the same level, said the website of the Beijing Environmental Protection Monitoring Center. [Photo/Chinanews.com]")
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