正确答案: A

①②

题目：国家制定了许多促进民族地区发展的政策和制度．例如:①优先在民族地区安排资源开发项目: ②对少数民族和民族地区的医疗卫生事业给予政策倾斜:③保证各级各类少数民族干部的相应比例;④尊重和照顾少数民族饮食．年节等方面的习俗．其中体现各民族共同繁荣原则的是

解析：A

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学习资料的答案和解析：

[单选题]D.My family and I lived across the street from Southway Park since I was four years old. Then just last year they city put a chain link fence around the park and started bulldozing (用推土机推平) the trees and grass to make way for a new apartment complex. When I saw the fence and bulldozers, I asked myself, “Why don’t they just leave it alone?”

Curious.

[单选题]具变态根的植物是( )。

红薯