题目

外出旅游最常用的地图有（ ）①导游图 ②地形图 ③政治地图 ④交通图． A . ②③ B . ③④ C . ①④ D . ①② 答案：C14、--How much do you know about the 3D film technology? --A little．Not until _____ the hot movie Avatar _____ something about it． A．did I see；did I begin to learn            B．I saw；I began to learn C．I saw；did I begin to learn                      D．did I see；I began to learn