The living room is clean and tidy, with a dining table already _____ for a meal to be cooked. [ ]

A. laid

B. laying

C. to lay

D. being laid

患者，女性，30岁，反复低热1个月余，伴关节肌肉酸痛。查体：轻度贫血貌，心率85次/分，心尖区可闻及收缩期吹风样杂音三级，诊断为风湿性心脏病，二尖瓣关闭不全，发热待查。有助于诊断感染性心内膜炎的检查是（）

A.心电图

B.全胸片

C.心脏彩超

D.心脏CT

E.心血管造影