题目

Could you tell me________? A. which room he lives        B. which room he lived C. which room did he live in  D. which room he lives in 答案：D右图表示四种货物生产运输过程中的相关特征。读图，回答30～31题。 30．适合航空运输的是 A．①        B．②        C．③       D．④ 31．货物④最佳运输方式是 A．公路      B．铁路     C．河运      D．海运