— You have been on tour for a week in our city during May Day. What do you think about it?

— Oh, what ____ different Nanjing! It isn't ____ I saw last. [ ]

A. /; the one

B. a; the one

C. a; one

D. /; one

下述X线征象哪项是左心房增大的可靠指征（）

A.食道受压移位

B.右心室漏斗部和肺动脉段凸起

C.鹿角征和Kerley线

D.双重阴影和双弧影

E.透视下相反搏动点上移