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右图为“某地区人口密度分布图”。读图,回答1～2题。1.该地区人口成斑块状环形分布的主要原因有A.环盆地以哈萨克族人为核心形成相对集中的居民点B.环盆地有大小不等、不连续的山前冲积扇平原分布
The picture to the right is “Population Distribution in a Region”. Reading map, answer 1 ~ 2 questions. 1. The main reasons for the population patchy annular distribution in this area are: A. Central basin forms a relatively concentrated residential area with Kazakh as the core B. There are different size and discontinuous distribution of foreland alluvial fan plains