下列关于Ⅲ度烧伤，错误的是（）
A.痛觉丧失
B.无水泡
C.有网状栓塞血管
D.焦痂约3周后开始分离
E.愈后留有瘢痕
参考答案：C
I was listening to pop songs while my parents ________ dinner yesterday.
A．were cooking
B．cooked
C．have cooked
D．had cooked
谚文
