标题: 求大牛解惑 黄皮书一道逻辑题 [打印本页] 作者: fatbearxq 时间: 2014-7-6 20:33 标题: 求大牛解惑 黄皮书一道逻辑题 [size=12.800000190734863px]Many geologists theorize that the trail of volcanic craters and cinder cones along the Snake River plain of southern Idaho was produced as the North American continent slid westward over a stationary “plume”, a vertical channel through which molten rock rose intermittently from the Earth’s core to burst through its curst.
[size=12.800000190734863px]Which of the following, if true, tends to support the geologists’ theory of how the trail was produced?
[size=12.800000190734863px](A) The largest craters and cinder cones are on the eastern margin of the trail.
[size=12.800000190734863px](B) The most violent volcanic activity apparently occurred at the western margin of the trail.
[size=12.800000190734863px](C) The craters and cinder cones are evenly spaced throughout the extent of the trail.
[size=12.800000190734863px](D) The newest craters and cinder cones are on the eastern margin of the trail.
[size=12.800000190734863px](E) The craters and cinder cones on the western margin of the trail generally took longer to form than did those on the eastern margin.
