肺动脉造影最常做（）穿刺插管
A.股动脉
B.股静脉
C.肘动脉
D.肘静脉
E.肱动脉
参考答案：B
－Dirty water shouldn’t be poured into rivers.
－_______. It will cause pollution.
A. Don’t say like this B. Never mind C. I agree with you
已知非Rt△ABC中，∠A=45°，高BD和CE所在的直线交于点H，画出图形并求出∠BHC的度数．
