Although we may not realize ________, when we talk with others we make ourselves understood not just by words but also by body movements.

A．it

B．them

C．that

D．ourselves

下列哪一项化验检查结果出现的可能性最大

A．血浆肾素水平升高，醛固酮水平降低
B．血浆肾素水平升高，醛固酮水平也升高
C．血浆肾素水平降低，醛固酮水平也降低
D．血浆肾素水平降低，醛固酮水平升高
E．血浆肾素和醛固酮水平均无变化