The children were surprised by the sudden _____ of their teacher. A.enter B. entrance C.entry D.come 答案:C下图为某地交通线路示意图,读图回答下列各题。(1)关于图中交通线的说法,正确的是( )A.①是乡村公路,②是高速公路B.甲、乙两地相对高度大C.②公路单位距离造价低D.①可能是城市干道(2)图中公路可能位于( )A.东北平原B.云贵高原C.成都平原D.华北平原(3)丁地最可能是( )A.山顶B.陡崖C.山谷D.山脊