Last Sunday I climbed to the top of the hill near my home, 　　　I could see half of the city.

A．that

B．where

C．which

D．there

SQL语言集数据查询、数据操纵、数据定义和数据控制功能于一体，语句DROP TABLE实现哪类功能

A．数据查询

B．数据操纵

C．数据定义

D．数据控制