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你想知道雾和霾的区别及危害吗?你想知道空气质量与PM2.5的关系吗?请阅读下列文章,然后做相关练习。难度系数:★★★☆☆词数:523建议时间:7.5分钟BEIJING,Jan.12(Xinhuanet)—Thick fog and haze shrouded central and northern parts of China on Friday,with Hebei and Henan provinces among the most polluted areas,monitoring data showed.An air quality report from the Ministry of Environmental Protection ranked Handan,
Do you want to know the difference between fog and haze and harm it? Do you want to know the relationship between air quality and PM2.5? Please read the following article, and then do the relevant exercises. Difficulty coefficient: ★★★★★ Number of words: 523 Suggested time: 7.5 minutes BEIJING, Jan.12 (Xinhuanet) -Thick fog and haze shrouded central and northern parts of China on Friday, with Hebei and Henan provinces among the most polluted areas , monitoring data showed. An air quality report from the Ministry of Environmental Protection ranked Handan,