患者因受精神刺激突发二便失禁，骨酸痿厥，遗精。其病机是
A．怒则气上B．悲则气消C．喜则气缓D．思则气结E．恐则气下
参考答案：E
--Harry! Some friends of mine will come here tomorrow. Would you mind
cleaning your room ?
---__________ [ ]
A. Sure.
B. Not at all.
C. Certainlv.
D. Yes.
某反应是吸热反应,且所吸收的热能由外部热源(如酒精灯)提供,提供的热能主要起到的作用是
__________________________________________________________________________。
