The ____of men to women in the college has changed dramatically

The ____of men to women in the college has changed dramatically over the years.
A、proportion
B、promotion
C、proposal
D、production
【正确答案】：A
【题目解析】：proportion比例，占比；promotion推销，促销；促进；发扬；proposal提议，建议；production成果；产品；生产。句意：这所大学的男女比例多年来发生了巨大变化。