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

Very few of them knew much about geology.

出自-2010年6月听力原文

Juan Louis, a junior geology major, decided to give an informative speech about how earthquakes occur

出自-2010年6月听力原文

From his audience and analysis he learned that only 2 or 3 of his classmates knew much of anything about geology.

出自-2010年6月听力原文

To be absolutely safe, Juan asked his roommate, who was not a geology major, to listen to the speech

出自-2010年6月听力原文