— Did you visit the famous museum?

— No. We _____ it, but we spent too much time shopping. [ ]

A. could have visited

B. must have visited

C. can't have visited

D. shouldn't have visited

门静脉高压症断流术其主要优点不包括

A．明显降低门静脉压力

B．手术并发症少

C．既能控制出血又能保持肝血液供应

D．手术简单易于推广

E．手术创伤小，患者恢复快