---- What do you think of Harry, our new roommate?

---- I am not sure, but he is always asking ______ questions and      them are very hard to answer.

A．a great many of; a great number of

B．a great many; many of

C．a great number; a great many of

D．a large amount of , many

某项目经理所在的单位正在启动一个新的项目，配备了虚拟项目小组。根据过去的经验，该项目经理认识到矩阵环境下的小组成员有时对职能经理的配合超过对项目经理的配合。因此，该项目经理决定请求单位制定（）

A.项目计划

B.项目章程

C.项目范围说明书

D.人力资源管理计划