A． Boys and girls share different incentives in math learnin
B． The girls are more anxious about their future caree
C． The boys consider that fishing doesn't necessarily need mat
D． The boys spend more time on their part time job

A． women have advantages over men in competitio
B． women tend to be in a less embarrassing leve
C． men are playing more important role
D． men are one third less than women in numbe