Which of the following words has NOT undergone extension of meaning?（ ）
A、box: container made of boxwood → any container
B、layman: one who is not of clergy → non member of any profession
C、busybody: busy person → officious and meddlesome person
D、citizen: city dweller → inhabitant of a state or nation
【正确答案】：C
【题目解析】：box原义为“用黄桃木做的容器”，现义为“任何容器”。layman原义为非神职人员，现义为“非专业人员”。citizen原义为“城镇居民”，现义为”一个州或国家的居民”。以上三个词的意义都扩大了。busyboy原义为“忙碌的人”，现义为“爱管闲事的人”，属于词义的降格。
