从文章第一段的句子:Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years.可知,一些证据表明深深的峡谷据相信是由于几百万年的河流冲刷造成的,故选B。 (2)题详解: ...
Each time the lake grew so huge that it broke the rock dam, releasing a flash flood that furthered the down-cutting process and deepened the canyon.”可知,科罗拉多河上游有几个大湖。故A。 3.细节理解题。根据文章倒数第二段的句子“Down-cutting is not just an earthly event. Satellite photos ...
根据“Some geologists believed that the process was a gradual one: the Colorado River which goes through the canyon slowly cut deeper and deeper into the ground over millions of years”可知,大峡谷是由于多年的河流造成的,故选A。 (2)题详解: 细节理解题。根据“Down-cutting is when a flood of...
How the Grand Canyon was created remains one of the geology's greatest mysteries. Some geologists believed that the process was a gradual one: the Colorado River which goes through the canyon slowly cut deeper and deeper into the ground over millions of years. But some rocks of the volcanoes...
从文章第一段的句子“Someevidence suggests thatthe process was a gradual one in which theColorado River( which runs through the canyon ) slowly cutdeeper and deeper into the ground over millions of years "可知,有些证据表明过去深深的峡谷是由于多年的河流的流动造成的,选B。②B【解析】细节理解题...
9.How the Grand Canyon (大峡谷) was created remains one of the geology's greatest mysteries.Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years.But volcanic...
How the Grand Canyon (大峡谷) was created remains one of the geology’s greatest mysteries. Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years. But volcanic...
How the Grand Canyon (大峡谷) was created remains one of the geology’s greatest mysteries. Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years. But volcanic...
How the Grand Canyon (大峡谷) was created remains one of the geology’s greatest mysteries. Some evidence suggests that the process was a gradual one in which the Colorado River (which runs through the canyon) slowly cut deeper and deeper into the ground over millions of years. But volcanic...
The "Chaco Culture", as modern-day archaeologists call it, flourished between roughly the 9th and 13th centuries A.D. and was centered at Chaco Canyon in what is now New Mexico. The people of the Chaco Culture built immense structures that at times encompassed more than 500 rooms. They als...