The manager told us that very little ____ was made of the waste material in the past.

A．cost

B．value

C．use

D．Matter

脐炎可向各个方向扩散，但除外

A．脐周围皮肤引起蜂窝组织炎
B．可向深部扩散，侵入腹腔引起脐源性腹膜炎
C．脐静脉受累后侵及门经脉、肝静脉及下腔静脉，引起门静脉栓塞，肝脓肿
D．经腹壁下动脉累及髂内动脉
E．经脐尿管累及膀胱