急性短暂性精神障碍的病程()
A.持续不超过1个月
B.持续1个月以上
C.持续2个月以上
D.持续3个月以上
E.以上都不是
参考答案:A
We asked six students what ______ yesterday.
A.do they do
B.did they do
C.they did
D.they do
吗啡主要用于
A.慢性钝痛B.急性锐痛C.胃肠绞痛D.分娩镇痛E.肾绞痛