单选题 In this famous park these plants are watered ______.
A. each other day B. every other day C. each of two days D. every two day

【正确答案】 B
【答案解析】every+基数词+复数名词或every+序数词+单数名词，表示重现或时间、空间上的间隔，作“每隔”解。every other day指“每隔一天”。