A: Your bicycle looks very nice. When did you buy it?

B: Oh, I ______ it for three months. It's a birthday present from my uncle. [ ]

A. bought

B. have bought

C. have received

D. have had

患者，男性，65岁，l小时前骑车外出被车撞倒，右侧胸壁摔到路边高岗上，当即感疼痛剧烈，深呼吸时尤著，伴胸闷、气促。入急诊科，查体：右胸第4、5肋骨侧胸壁肿胀，压痛明显，胸廓挤压试验（+），胸部触诊无握雪感，气管向左侧移位，右胸叩诊鼓音，呼吸音减弱

如为患者行胸腔闭式引流术，液封瓶内大量气泡冒出后，有血性胸液流出，观察3小时，每小时引流量150ml。患者心率逐渐增快、大汗，血压90/60mmHg，治疗措施是（）

A.补液、输血、抗休克治疗

B.应用止血药，继续观察

C.胸腔内注射止血药

D.急诊开胸探查

E.胸引瓶接负压吸引

F.纤维支气管镜检查