With this spring’s sports meet on 26th,April______, we find the track on the play ground newly______ with white paint and students of each class more united than ever.

A．in the corner, mark

B．around the corner, marked

C．in the corner, marking

D．around the corner, be marked

男性，32岁，反复心悸，动态心电图提示阵发性室上性心动过速，拟行射频消融治疗；其可能的并发症中，不正确的是（）

A.误伤希氏束，造成二度或三度房室传导阻滞

B.心脏穿孔致心脏压塞

C.穿刺左锁骨下静脉引起气胸

D.主动脉瓣穿孔引起主动脉瓣中至重度反流

E.并发症较轻，发生率低，不可能导致死亡