下列( )不是城市生态系统物质循环的特点。

A．所需物质对外界有依赖性

B．物质既有输入又有输出

C．生活性物质远远大于生产性物质

D．物质循环中产生大量废物

The nurse-manager has noticed a sharp increase in the mediation errors with IV antibiotics over the last month. She discusses the situation with each nurse involved. What other action should she take（）

A. Document it on their evaluation.

B. Ask them to attend inservice training for administration of IV medications.

C. Report them to the supervisor.

D. Report the incidents to the hospital attorney.