What ___ he ___ at nine last Sunday morning? [ ]
A. does, do
B. did, do
C. was, doing
答案:C
肝浊音界上移见于()肝浊音界消失见于()
A.胃肠胀气
B.急性肝炎
C.急性胃肠穿孔
D.右下肺不张
E.肺气肿
心肌梗死的鉴别诊断不包括()
A.急性肺动脉栓塞
B.主动脉夹层
C.急性心包炎
D.心律失常
E.急性胰腺炎