A.+→
B.→+
C.+→
D.→+
答案:D
The newspaper did not mention the extent of the damage ______ by the fire.
A.causing
B.to cause
C.caused
D.being caused
男孩,4岁,6个月起青紫,渐加重,常蹲踞。胸骨左缘第3肋间可闻及2级收缩期杂音,P2减弱,有杵状指(趾)
最常见的并发症是()
A.肺炎
B.心力衰竭
C.脑栓塞
D.脑血栓
E.呼吸衰竭