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阅读下面链接提供的文章,完成下面的问题In order to achieve our goals, we need to change our behavior, and eventually become a better version of ourselves.Because right now we’re not ready for it yet, we haven’t developed the needed habits, haven’t eliminated some unhealthy and unproductive activities, and have so many distractions that we hardly know what’s really important.But achieving what you want is absolutely possible. You just need to fall in love with consistency and starttaking a step each day towards reaching your goals.And you need to eliminate the things that not only slow your progress, but which keep you from moving forward.Here they are:_____、_____、_____、_____、_____、_____、______、_______、_____.

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条件“age IN(20,30,40)”表示年龄在( )

A. 20到40之间
B. 20到30之间
C. 20或30或40当中的任意一个
D. 在30到40之间

IN、ANY、ALL常用于返回()的子查询中。

A. 单行单列
B. 单行多列
C. 多行单列
D. 多行多列

嵌套查询是指一个查询中嵌套了另外的一个或几个查询,即在一个Select查询的Where或From、JOIN(UNION)子句中嵌套了另外的一个或几个Select查询,其中,外层的Select查询为()查询,内层(嵌套)的Select查询为()查询。

根据子查询返回数据情况的不同,子查询有四种类型:即返回()、()、()或()数据的子查询。

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