题目

I don’t think the risk they took ______ the poisonous snake is worthwhile. A.    being caught   B.    of catching            C.    caught                   D.    to be caught 答案：B（2014秋•石林县期末）我国目前已建成的海拔最高的铁路是（　　）A．青藏线B．兰新线C．滇藏线D．成昆线