参考答案

正确答案：D
解析：细节题。根据题目中的seismic gap找到小标题Earthquakes Strikes in Gap下第一段第二、第三句A seismic gap is an area in an active earthquake region where no earthquake or seismic activity has been recorded in a long time. Seismic gaps are located where two large plates in the earth have become stuck. (地震活动空白地带是指较长时间没有地震记录的地震活跃地区，它通常处于地球两大板块相接的地方)。这道题的答案是D。