Wilma became the first American woman to win three Olympic gold medals in track made her

问题补充：

Wilma became the first American woman to win three Olympic gold medals in track, made her mother very proud.

答案：

>A. itB. thatC. whichD. this

考查关系代词。本句考查由which引导的非限制性定语从句。其中which指代前面已整个句子。