【正确答案】
B
【答案解析】[听力原文] Welcome to Yellow Stone National Park. Before we begin our nature walk today, I'd like to give you a short history of ournational park service. The national park service began inthe late 1800s, A small group of explorers had just completeda month-long exploration of the region that is now YellowStone. They gathered around the campfire and after hours ofdiscussion, they decided that they should not claim this landfor themselves. They felt it should be accessible to everyone.So they began a campaign to preserve this land for everyone'senjoyment. Two years later, in the late 19th century, an Act ofCongress signed by President Ulysses S. Grant, proclaimedthe Yellow Stone region a public park. It was the firstnational park in the world. After Yellow Stone became a publicpark, many other areas of great scenic importance were setaside. And in 1916 the national park service was established tomanage these parks. As a park ranger, I am an employee of thenational park service. In the national park, park rangersare on duty at all the time to answer questions and help visitorsin any difficulty. Nature walks, guided tours and campfire talksare offered by specially trained staff members. The park service alsoprotects the animals and plants within the parks. According to the speaker, who originated the idea of the public park? 听力短文在开头提到，国家公园的服务始于19世纪晚期，当时有一小组的探险家刚刚完成了对现在黄石公园所在区域的探险，他们在营火旁围坐，经过了几个小时的讨论，他们做出决定不应该声称这片区域为他们所专有，认为每个人都应该能来到这里，所以他们开始宣传要保护这个区域，以便每个人都可以到此游玩。可见，是一些探险家最初提出了设立国家公园并向公众开放的建议，故选B。