门静脉高压症声像图表现不包括（）。
A.肠系膜上静脉增宽
B.脐静脉开放
C.脾静脉增宽
D.肝静脉增宽
E.左肾静脉增宽
参考答案：E
They would not allow him _______ across the enemy line.
A．to risk going
B．risking to going
C．for risk to go
D．risk going
试述行政行为的内容与效力。
