题目

在某幅地图上，60°N上甲乙两地相距11．1厘米，两地的时差是2小时，则此图的比例尺约为 A．图上1厘米代表实地距离100千米        B．1：15000000 C．1／30000000                           D． 答案：B. — Why was Professor Johnson unhappy those days? — The only reason was ________the theory he stick to ____ wrong.A．that; provingB．why; being provedC．that; provedD．why; was proved