The killing was cold-blooded, and those who committed this ______ should be tried and punished.
A、attribution
B、attrition
C、atrophy
D、atrocity
【正确答案】：D
【名师解析】:本题考查名词的词义辨析。选项A.attribution意为“归因，属性”，选项B.attrition意为“消耗，摩擦”，选项C.atrophy意为“萎缩，衰退”，而选项D.atrocity意为“残暴行为，暴行”。根据题干中的“killing was cold-blooded”可知，这里指的是“残忍的杀戮”，因此正确答案为D.atrocity。
