题目

I found myself a little while ago in one of the largest American prisons. It was like a stone castle, its high towers watched by guards with guns. I had been there several times before, on earlier visits to the USA. But this time I had come to see one particular prisoner, He was nineteen and after two years by himself in one room was awaiting execution for murder. He bad just heard the result of a fresh trial. He was to serve life imprisonment instead. He was white -faced and talkative, a boy who had failed in high school and had all too easily got caught up in a night's adventure that had end“坐地日行八万里，巡天遥看一千河”，描述的是A.地球赤道半径B.地球平均半径C.地球表面积D.地球赤道周长