胸骨右缘第1、2肋间浊音界增宽常见于
A．肝硬化腹水B．急性胃穿孔致腹膜炎C．胰腺囊肿D．癌症晚期恶病质E．腹白线疝
参考答案：D
胸腔内压力不断增加的是（）
A.闭合性气胸
B.开放性气胸
C.张力性气胸
D.脓胸
E.多根多处肋骨骨折
The policeman’s attention was suddenly caught by a small box which _____ placed under the Minister’s car.
A．has been
B．had been
C．was being
D．would be
