—Once a neighbour accused me ________ playing my radio too loudly .

　—Oh, you had the right to defend yourself ______ the charge.

A．of; against

B．for; of

C．against; for

D．for; against

有关室间隔缺损正确的说法是（）

A.X线显示右心室、左心室甚至伴左心房的增大

B.X线显示肺动脉段的突出，主动脉弓增大

C.X线显示肺门影增浓，肺野清晰，无肺门舞蹈

D.肺动脉瓣第二音亢进、伴有固定性分裂

E.胸骨左缘有响亮粗糙的机器样杂音