.

—Was _________________ problem solved?

—We were trying to think of _________________ way out, but it was difficult to find one.

A．a; a

B．a; the

C．the; a

D．the; the

男，32岁。胸骨左缘第3肋间有舒张早期递减性吹风样杂音，可考虑主动脉瓣关闭不全诊断。

欲排除Graham-Steel杂音的可能，下列哪项最有价值（）

A.第一心音亢进

B.左心室扩大

C.奇脉

D.血压正常

E.心尖搏动向左移位