【题目】Over 100 passengers lost their lives in the recent air crash, which was a deadly to their families.
A. defeat B. challenge C. barrier D. blow
在线课程【答案】D
【解析】
试题分析：D；考查名词。A. defeat击败，战胜 B. challenge挑战 C. barrier障碍物，屏障 D. blow吹，打击；句意：超过100位乘客在空难中失去了生命，这对他们各自的家庭无疑是一个致命的打击。根据句意，故选D