男性，62岁。车祸伤后胸痛、气促1天来院。体检：胸壁压痛，未扪及骨擦感和皮下气肿，右下胸腔叩浊，右下肺呼吸音减弱，左肺呼吸音清晰。胸片示右肺门以下大片密度增高影。

应考虑的诊断是（）

A.少量血胸

B.中量血胸

C.大量血胸

D.血气胸

E.进行性血胸

－Where  is that report?     

－I brought it to you          you were in Mr Black's office yesterday.       [ ]

A. if                      

B. when      

C. because                

D. before