Choose the closest paraphrased version for the sentence or italicized part.
Courtesy is often nothing more than a highly developed sense of fair play.（）
A、
Courtesy is not a highly developed sense of fair play.
B、
Courtesy is more than a highly developed sense of fair play.
C、
Courtesy is just a highly developed sense of fair play.
D、
Courtesy is more important than fair play.
【正确答案】：C
【题目解析】：
句子释义：文明举止往往只不过是高层次的公平意识。nothing more than 只不过是,仅仅是. 选自下册第一课 Courtesy: Key to a Happier World。