单选题 The opening of the insurance market will expand business scale, intensify market ______and break monopoly.
A. challenge
B. encounter
C. opponent
D. competition

【正确答案】 D

【答案解析】这句话的意思是说，开放保险市场将会拓展商业范围，加剧市场竞争，打破垄断经营。(A)challenge挑战；(B)encounter偶遇、意外相见；(C)opponent对手、敌人、反对者；(D)competition竞争、比赛。