As everyone knows, the South China Sea is _____ part of China, _____ important part of China,

any other country outside Asia doesn't have _____ say in this issue. 

[    ]

A. a, an, /

B. /, an, a

C. a, the, the

D. a, an, /

肝脏肿大患者，医生用手压迫肝脏时出现颈静脉怒张更明显，称为肝颈静脉回流征阳性，是下列哪一种疾病的征象（）

A.右心衰竭肝淤血症

B.肝硬化门静脉高压症

C.上腔静脉阻塞综合征

D.下腔静脉阻塞综合征

E.肝静脉阻塞综合征