地球运动一直都是高考命题热点,大多数此类题目涉及晨昏线。由于观察的角度和位置不同,晨昏线图的形式变化也较多。晨昏线图集地理基础知识、地理学科思维特色、地理学科基本技能训练于一图,成为近几年高考高频考点。一、以晨昏线纬度最高点作为切入点晨昏线纬度最高点即为晨昏线与极夜圈的切点、晨线与昏线的分界点,所在经线的地 Earth movement has always been a hot topic in the college entrance examination, most of these topics involving the twilight line. Due to the different angles and positions of observation, the patterns of morning shift are more varied. Twilight Atlas basic knowledge of geography, geography disciplinary thinking characteristics, basic disciplines of geography disciplines in a map training, as the high frequency test centers in recent years. First, the dusk line latitude as the highest point of entry as the starting point Dusk line latitude is the highest point of the dusk line and the night circle of the tangent point, the morning line and the faint line of the dividing line, where the meridians