委托人在受托人按其委托要求成交后，必须如期履行交割手续，否则即为违约。( )
参考答案：对
―What do you think of this dress, darling?
―Er...sorry, dear. I _______. What did you say?
A．didn't listen
B．hadn't listened
C．haven't listened
D．wasn't listening
王某，女57岁，咳喘12年，近半年下肢浮肿，经常心悸，动则尤甚，近2天来心悸咳喘加重，咯痰清稀，面部下肢浮肿，尿少，夜间不能平卧，面唇青紫，苔白滑舌胖质暗，脉沉细无力。
本病例的诊断为（）
A.哮证
B.喘证
C.心悸
D.肺胀
E.肺痿
