Nowadays senior high students are burdened with too many        ，which is making them less and less confident.

A．motivations

B．expectations

C．amusements

D．opportunities

患者，男，70岁。神志痴呆，表情淡漠，举止失常，面色晦滞，胸闷泛恶，舌苔白腻，脉滑。其病机是

A．痰迷心窍

B．痰火扰心

C．心血瘀阻

D．肾精亏虚

E．心脾两虚