When we got to Yushu airport we were told that they more than 500 people from the ruins(

问题补充：

When we got to Yushu airport , we were told that they more than 500 people from the ruins(废墟) by earthquake.

A. has saved B. saved C. had saved

答案：

解析：考察时态。句意：当我们到达玉树机场时，有人告诉我们他们已经在地震废墟中救了超过五百人。结合语境可知从句中描述的是过去某时已经完成的动作，故用过去完成时态。选C。