The letter was written by Darwin to thank an American geologist, Dr.Ferdinand Vandeveer Hayden, for sending him copies of his research into the geology of the region that would become Yellowstone National Park.
2018年6月四级真题（第二套）阅读 Section C
After years of heated debate, gray wolves were reintroduced to Yellowstone national park.
2017年高考英语全国卷3 阅读理解 阅读C 原文
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone park.
2017年高考英语全国卷3 阅读理解 阅读C 原文
At some time in the past Yellowstone must have blown up with a violence far beyond the scale of anything known to humans.
2019年高考英语江苏卷 阅读理解 阅读B 原文
But Christiansen couldn't find the Yellowstone volcano anywhere.
2019年高考英语江苏卷 阅读理解 阅读B 原文
By last year, the Yellowstone wolf population had grown to more than 170 wolves.
2017年高考英语全国卷3 阅读理解 阅读C 原文
By the 1920s, wolves had practically disappeared from the Yellowstone area.
2017年高考英语全国卷3 阅读理解 阅读C 原文
Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone.
2017年高考英语全国卷3 阅读理解 阅读C 原文
Gray wolves once were seen here and there in the Yellowstone area and much of the continental united states, but they were gradually displaced by human development.
2017年高考英语全国卷3 阅读理解 阅读C 原文
In the 1960s,while studying the volcanic history of Yellowstone national park,bob christiansen became puzzled about something that,oddly,had not troubled anyone before：he couldn't find the park's volcano.
2019年高考英语江苏卷 阅读理解 阅读B 原文
It had been known for a long time that Yellowstone was volcanic in nature — that's what accounted for all its hot springs and other steamy features.
2019年高考英语江苏卷 阅读理解 阅读B 原文
Just at this time nasa decided to test some new high-altitude cameras by taking photographs of Yellowstone.
2019年高考英语江苏卷 阅读理解 阅读B 原文
The reintroduction of wolves to Yellowstone Park.
2017年高考英语全国卷3 阅读理解 阅读C 选项
The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
2017年高考英语全国卷3 阅读理解 阅读C 原文
Today, the debate continues over how well the gray wolf is fitting in at Yellowstone.
2017年高考英语全国卷3 阅读理解 阅读C 原文
Yellowstone obviously was of this second type, but Christiansen couldn't find the caldera anywhere.
2019年高考英语江苏卷 阅读理解 阅读B 原文