人的性别决定于下列哪个时期（ ）
A：受精卵形成时
B：生殖细胞形成时
C：婴儿出生时
D：青春期
Women are so accustomed to decades of __________ and to __________ histories of women whose contributions went unnoticed that they assume these conditions still exist today.
下列图形中，对称轴最多的是( )。
____
