In the dream Peter saw himself _____ by a fierce wolf, and he woke suddenly with a start. [ ]

A. chased

B. to be chased

C. be chased

D. having been chased

下列描述继发孔房间隔缺损的超声表现哪项是错误的

A．右心房、右心室均增大
B．房间隔中部连续中断
C．左心房、左心室均增大
D．室间隔与左心室后壁同向运动
E．肺动脉增宽