项目型组织管理的关键点不包括（）。

A、与客户的沟通不重要

B、项目资源尽量复用

C、项目规避关键人员单点风险

D、项目管理能力要求高

I have tried very hard to improve my English. But by no means ___with my progress.

A．the teacher isn’t satisfied

B．is the teacher not satisfied

C．the teacher is satisfied

D．is the teacher satisfied