There are 53 million mu of arable land is in Hebei Province grain, oil, the main cotton-producing areas, Hebei Province, is the firstpollution-free agricultural production base.
有耕地面积53万亩，是河北省粮、油、棉主要产区，也是河北省首批无公害农产品生产基地之一。
2
Chinese government is poised to conduct its first national survey of pollution sources in February to help control environmental deterioration in the country.
中国政府准备在2月份进行首次全国污染源调查，以帮助控制环境恶化。
3
First, then, how does the car cause air pollution?