对于人类来说性别决定主要决定于 [ ]
A．卵细胞所含的性染色体
B．精子所含的性染色体
C．性激素
D．孕妇的饮食营养
答案：B
His uncle made a film _______ his story in his childhood.
A．based on
B．was based on
C．basing on
D．to base on
氢化可的松注射液保存时最好
A．冷藏保存
B．冷冻保存
C．2～8℃保存
D．单独放置
E．与其他注射液混合放置
