1-3年​（注：搜索结果中未明确提及2025年秦皇岛眶隔脂肪释放医生的具体从业年限或排名更新，以下内容基于2024年及之前的权威信息整理）

The following is a multiple-choice question:
Question: The correct statement about the distribution of ethnic groups in China is ( )
A. Ethnic minorities are mainly distributed in the central and eastern regions
B. Large scattered, small clustered, and intermingled distribution
C. Han Chinese are all distributed in the eastern and southern regions
D. Ethnic minorities are all distributed in the northwest, southwest, and north China
The answer is B
Analysis: The characteristic of the distribution of ethnic groups in China is "large scattered, small clustered, and intermingled." The Han Chinese are the most widely distributed, mainly concentrated in the eastern and central regions. Ethnic minorities are mainly distributed in the southwestern, northwestern, and northeastern regions. There are also ethnic minority settlements in Han Chinese areas, and Han Chinese populations in ethnic minority areas. This pattern of ethnic distribution promotes interaction and cooperation among different ethnic groups, providing favorable conditions for the common prosperity of all ethnic groups. Therefore, option B is correct.