疝术前嘱病人排尽尿液是为了（）
A.防止尿在手术台上
B.防止尿多病人躁动
C.防止术后尿潴留
D.防止术中损伤膀胱
E.例行公事
参考答案：D
In Japan, people sometimes give special gifts. But they are not open.
Later, people may _______ the same gifts to someone else. [ ]
A. give up
B. give in
C. give away
D. give back
主动脉瓣反流时心尖部可存在（）
A．Graham－Stell杂音
B．Austin－Flint杂音
C．Duroziez征
D．Traube征
E．Musset征
