These plants are watered.A. each other dayB. every other dayC. each of two daysD. every of

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A. each other day
(答案→)B. every other day
C. each of two days
D. every of two days
解析：考查固定用法。every other day 每隔一天。其它选项结构不对，故选B，这些指物每隔一天浇一次。