Honorifics are defined by Webster's Ninth New Collegiate Diction

Honorifics are defined by Webster's Ninth New Collegiate Dictionary as a class of grammatical forms used in speaking to or about a social ______. ( )
A、inferior
B、superior
C、equal
D、equivalent
【正确答案】：B
【题目解析】：《韦氏第九版新学院词典》将敬语定义为与社会上层人士交谈时使用的一种语法形式