以A表示事件“甲种产品畅销，乙种产品滞销”，则其对立事件A为（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25280' and id < 2138940 and id<>'2138940' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25280' and id > 2138940 and id<>'2138940' order by id asc limit 5