In those days, young people used to measure themselves ______ su

In those days, young people used to measure themselves ______ such hero as Lei Feng.
A、for
B、on
C、against
D、of
【正确答案】：C
【题目解析】：那个时候人们常常用像雷锋这样的英雄来对照自己。measure … against 意为对照……来评价，故选C。