生成关于这道地理题的讲解视频，通过动画展示做题逻辑结构，用不同颜色的字体表示解题关键词---**Question Stem:** 2024年春季，江西省婺源县篁岭梯田上，金灿灿的油菜花竞相开放，蔚为壮观。 当地大力打造以“赏花经济”为特色的“农业+旅游”融合新业态，助推乡村振兴。如图示意婺源部分村落及周边地区等高线地形。据此完成下面小题。 **Options:** A. 地形以平原为主 (Terrain is mainly plains) B. 地势南高北低 (High in the south, low in the north) C. 地势东北高西南低 (High in the northeast, low in the southwest) D. 地形以盆地为主 (Terrain is mainly basins) **Chart/Diagram Description:** * **Type:** Contour map (等高线地形图). * **Main Elements:** * **Contour Lines:** Multiple closed and open contour lines are shown, indicating varying elevations. Labeled contour lines include 400, 500, 600, 700, 800, and 900 meters. The contour interval appears to be 100 meters. * The highest elevations (up to 900m and above) are generally found in the northern and northeastern parts of the map. * The lowest elevations (below 400m) are generally found in the southwestern part of the map. * Contour lines are relatively dense in many areas, particularly in the northern and central parts, indicating steep slopes. * **Rivers (河流):** Represented by thick, wavy lines. Rivers flow through valleys where contour lines bend sharply towards higher elevations. There are several river segments visible, generally flowing from higher elevations in the north/northeast towards lower elevations in the south/southwest. * **Villages (村落):** Four areas are marked as villages, represented by shaded oval shapes with diagonal lines: * 甲 (Jia): Located in the central-right part of the map, between the 600m and 700m contour lines, near a river. * 乙 (Yi): Located in the central-left part of the map, between the 400m and 500m contour lines, near a river. * 丙 (Bing): Located in the lower-left part of the map, near the 400m contour line and a river. * 丁 (Ding): Located in the far southwestern corner of the map, at a lower elevation than 丙, also near a river. * **Points:** A point labeled ① (1) is located in the east-central part of the map, near the 600m contour line. * **General Topography:** The overall elevation decreases from the northeast to the southwest. The terrain is characterized by hills and mountains, indicated by the significant elevation differences and numerous contour lines. * **Legend:** * "~400~ 等高线(m)": Indicates that lines are contour lines, and the numbers represent elevation in meters. * "河流": Represents a river. * "村落": Represents a village.