Speaker A: What seems to be the problem with the blouse, miss Speaker B:_____

A．How do you know I have a problem with the blouse

B．No, thank you. There is nothing wrong with the blouse.

C．I was not careful and spilled some coffee on it.

D．Well, look what happened the first time I washed it. The color changed completely.

患者，23岁，有国外旅游史，1天前出现腹部隐痛不适，大便35次，每次量均较多，先为水样便，再转为洗肉水样粪便，呕吐水样物10次，不伴恶心，无发热，无里急后重。体查：声音轻度嘶哑，眼窝明显下陷，皮皱恢复较慢。

确诊应做下列哪项检查（）

A.粪便常规

B.血常规

C.血清学检查霍乱弧菌抗体

D.血生化检查

E.粪便霍乱弧菌培养