某商家经销一种绿茶，用于装修门面已投资3000元，已知绿茶每千克成本50元，在第一个月的试销时间内发现，销量w（kg）随销售单价x（元/kg）的变化而变化，具体变化规律如下表所示

设该绿茶的月销售利润为y（元）（销售利润=单价×销售量﹣成本﹣投资）．

阅读理解

     Mr. Lee was in bed and was trying to go to sleep when he heard the bell ring. He turned on the light and looked at his clock. It was twelve o'clock. "Who can it be at this time of night?” He thought. He decided to go and find out. So he got up, put on his dressing gown(长袍) and went to the door. When he opened the door, there was nobody there. "That is very strange." Then he went back to his bedroom, took off his dressing gown, got back into bed, turned off the light and tried to go to sleep.

     A few minutes later he heard the bell ring again. Mr. Lee jumped out of bed very quickly and rushed to the door. He opened it, but again he found no one there. He closed the door and tried not to feel angry. Then he saw a piece of paper on the floor. He picked it up. There were some words on it: "It is now after midnight (午夜), so it is April Fool's Day(愚人节). April fool to you!”

    “Oh, it was the English boy next door!" Mr. Lee exclaimed（惊叫）and almost smiled. He went back to bed and fell asleep at once. The bell did not ring again.

依次填入下列语句中横线处的词语最符合语境的一项是（    ）

①舞台上艺术家演奏的乐曲_________动听，台下观众听得如痴如醉。

②正在进行旅游开发论证的千岛湖水下古城，其历史可以_________到一千年以前。

③2016年世界园艺博览会在唐山举行。开园以来参观者非常多，可谓游人如织，_________，热闹非凡。