C：我是北京延庆县人。
建立了延庆县旅游生态环境质量评价体系。
Tourism eco-environmental quality evaluation system of Yanqing was established.
我是北京延庆县人。
野鸭湖湿地博物馆位于北京市延庆县康庄镇野鸭湖国家湿地公园内，是湿地保护区的主要部分。
Wetlands and Culture Museum is located at Yanqing County, Beijing, National Wetland Park Town, is a major part of the Wetland Reserve.
它坐落在延庆县北部一条幽静的峡谷中，是由一支不见史志记载的古代先民在陡峭崖壁上开凿的石窟居室。
It is located in a quiet valley in the north of Yanqing County. It is said that, ancestors cut in the steep cliff and built the cutting room caves, which are 147 rooms in total.
它坐落在延庆县北部一条幽静的峡谷中，是由一支不见史志记载的古代先民在陡峭崖壁上开凿的石窟居室。
It is located in a quiet valley in the north of Yanqing County. It is said that, ancestors cut in the steep cliff and built the cutting room caves, which are 147 rooms in total.
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