— _____________ that woman, Helen?

— She's Miss Li.

— _____________ is that dress? Is it hers?[ ]

A. Who, Whose

B. Whose, Who's

C. Who's, Whose

男，60岁，急性心肌梗死患者，疑有早期心源性休克末梢循环改变，血压90/70mmH，中心静脉压13cmH₂O，尿比重1.016，在治疗时应首选的药物是

A．西地兰

B．硝普钠

C．心痛定

D．肾上腺素

E．低分子右旋糖酐