Having taken our seats, ______.

A．the professor began the lecture

B．the lecture began in no time

C．we were attracted by the lecture immediately

D．the bell announced the beginning of the lecture

患者，男性，被1万伏高压电击伤双上肢、双下肢，否认外伤及呼吸心跳停止病史。于伤后16小时就诊，体检发现：患者极度烦躁，心率158次／分，血压90/80mmHg，双上肢肿胀明显，桡动脉搏动微弱，皮温低，尿液呈酱油色。

双上肢创面宜立即采取（）

A.切痂植皮手术

B.神经血管探查术

C.暴露疗法

D.包扎疗法

E.切开减张术