单选题 Leading cadres launch rectification campaigns at regular ______ to hear the masses' views.
A. interaction B. intervals
C. interruptions D. interpretation

【正确答案】 B
【答案解析】[解析] 此题考固定搭配。at regular intervals“每隔一定时间”；interaction“交互作用；交感”；interruption“打扰；中断”；interpretation“解释，阐明”。显然答案应为B。