If you know nothing about the famous program called Where are we going, dad?, you ______be living in a box!

A．would

B．can

C．must

D．need

风心病二尖瓣狭窄患者，随右心衰竭的加重，下列哪项临床表现将减轻（）

A.下肢水肿

B.肝肿大压痛

C.颈静脉曲张

D.心尖区舒张期隆隆样杂音

E.呼吸困难