[单项选择]Why are the private lands surrounding Glacier National Park so important A. They function as a hunting preserve. B. They are restricted to government use. C. They are heavily populated. D. They contain natural habitats of threatened species.
参考答案:D 答案解析:事实细节的找寻和判断。根据题干线索找寻到原文第一段第三句可知“This land is an important part of the habitat and migratory routes fo