从发电厂到闹市区一共有250根电线杆，每相邻两根电线杆之间是30米。从发电厂到闹市区有多远？9h-}:r'y*f8_0O
算式：提示;^*p9|6B4Q+y5w9h-}:r'y*f8_0O
答：从发电厂到闹市区有1{2?-j4C8b+J+`9A:l3L'S1p8n0^.y5K2W6E米。9h-}:r'y*f8_0O