Deaf people can't _____,but they can learn how to move their mouths ______they can speak.

A．listen ,so

B．hear, so

C．listen, so that

D．hear, so that

有关慢性缩窄性心包炎的治疗，下列叙述哪项正确？（）

A.内科保守治疗，静点心肌保护药物

B.一旦确诊应尽早手术治疗

C.强心利尿治疗

D.待肝肾功能正常时考虑手术治疗

E.彻底治疗原发病因