2015 年新春伊始,自费拍摄的纪录片《雾霾渊查:穹顶之下》引发了社会大众对雾霾问题的高度关注。某校研究性学习小组选择了“雾霾天气对人的健康的影响及防护措施”的课题,确定了研究方法、步骤及时间进度,并对研究内容做了详细分工:小组成员将分别对老人、儿童、孕妇、户外工作者四类特殊群体进行有针对性的研究。在这一研究过程中,同学们主要坚持了 ( ) 1运动和静止的辩证统一 2前进性和曲折性的辩证统一 3系统和要素的辩证统一 4普遍性和特殊性的辩证统一 A .12 B .13 C .24 D .34
【简答题】Babies are born yogis. Once we were all able to pull our toes up by our ears and laugh about it. Then we aged, got injured, and began carrying stress in our shoulders and back. In short, we lost our b...
【简答题】Babies are born yogis. Once we were all able to pull our toes up by our ears and laugh about it. Then we aged, got injured, and began carrying stress in our shoulders and back. In short, we lost our b...