－Have you finished _______ your composition? It is time to hand it in.

－Not yet, I _______ it the whole morning, but it is so hard that I only finished half of it.

A．writing; had written

B．write; wrote

C．written; was written

D．writing; have been writing

在环境管理体系中，对于运行控制的理解不正确的是( )。

A．对所有的活动和过程都应建立相应的运行控制程序

B．运行控制的目的是实现组织方针和目标

C．运行控制的手段是编制控制程序

D．运行控制的对象是与环境因素有关的运行与活动