A good story does not necessarily have to have a happy ending, but the reader must not be left __________________.

A．unsatisfying

B．unsatisfied

C．to be unsatisfying

D．being unsatisfied

具有镇静、催眠，抗惊厥、抗癫痫作用的药物是：

A．苯妥英钠

B．苯巴比妥

C．水合氯醛

D．扑米酮

E．戊巴比妥钠