— Can I have __________ more food?

— Sorry. There is not__________ in the fridge.

A．some; anything else

B．some; nothing else

C．any; anything else

D．any; nothing else

在SQL的SELECT查询结果中，消除重复记录的方法是______。

A．通过指定主关系键

B．通过指定唯一索引

C．使用DISTINCT

D．用HAVING子句