Mrs.Wilson was the first woman____ to such a post. A. to have been elected B. to be elected .
参考选A. 这里却有另外的例句：
He was the first man to fly across the Atlantic.
They were the last guests to arrive.
I was the first in my family to go to college.（选自牛津第七版）
Shelia and Jim were the first to arrive.（选自牛津第七版）
He was the fist man to land on the moon in july 1969.(选自人教版必修一教材).