随着云计算、大数据、物联网等高科技及其产品日益普及和广泛应用，居民消费从现金流通到刷卡消费，再到移动支付，高科技的魅力无处不在。目前，我国已成为世界第一大移动支付国家。这主要说明（    ）

阅读下面这首诗，完成下列小题。

宿建德江

【唐】孟浩然

移舟泊烟渚，日暮客愁新。

野旷天低树，江清月近人。

1平方米树林每月大约制造氧气3千克。一块长方形树林长40米，宽20米，这片树木一个月能制造氧气多少千克？

根据短文内容判断下列句子正误。
    My name is Amy. Tomorrow is Saturday. My parents aren't going to work, but we are going to be very busy tomorrow. My mother is going to buy something. I'm going to the bookstore in the morning. Then I'm going to buy a dictionary.
    Tomorrow evening we are going to visit my grandparents and have a big dinner. After that we are going to the cinema. I think we are going to have a nice weekend.

下列地理事物，既是亚洲之最又是世界之最的是（    ）