【单选题】患者,女性,89 岁。由于脑栓塞入院,病情稳定,二级护理。次日患者坠床,造成颅内出血,终因伤势过重死亡,根据对患者造成的伤害程度,该事故属于( )
【单选题】Although the causes of cancer , we do not yet have any practical way to prevent it. [ ]
【单选题】Although the causes of cancer ________, we do not yet have any practical way to prevent it.
【单选题】根据知觉中哪一种感受器的活动占主导地位,还可以把知觉分为视知觉、嗅知觉、听知觉以及视听知觉和( )。