性别角色认同是潜意识活动。
参考答案：对
so various views about the matter,it is hard for him to make a decision.
A．Being
B．To be
C．There being
D．There to be
不影响02运输因素有（）
A.pH值
B.PCO2
C.温度
D.2，3-DPG
E.K+
