题目

某水果点销售50千克香蕉，第一天售价为9元/千克，第二天降价6元/千克，第三天再降为3元/千克．三天全部售完，共计所得270元．若该店第二天销售香蕉t千克，则第三天销售香蕉千克． 答案：【1】30-{#mathml#}t2{#/mathml#}—Green Book is on now. Would you like to go to the cinema with me?—No. thanks. I　　　it twice.A.seeB.sawC.have seenD.will see