This air crash which was suspected to be plotted by international political terrorists led to the stop of the diplomatic relations between the two countries.
【正确答案】 D
【答案解析】解析：名词辨析。stop表：停止，车站，逗留，障碍，填塞；而A．suspensory悬吊式，悬带；B．sustenance食物，营养物，生计；C．suspicion猜疑，怀疑；D．suspension悬浮，暂停，中止，延迟；本句意为：这起空难被怀疑是由国际政治恐怖分子所策划的，它导致两个国家中止了外交关系。因此选项D为答案。