根据所给单词的汉语意思，用单词的适当形式填空。

小题1:I suggest you spend less time               （聊天）.

小题2:We must take            （措施） to prevent environmental pollution from getting worse.

小题3:Her father advised her to keep her              （距离） from that fellow.

小题4:         （传统的）teaching methods sometimes fail to keep students concentrated.

小题5:I’ve got to apologize for my                （行为）. I was out of line.

小题6:Children eat ice cream in the            （阴凉）.

小题7:And any       （争论） between us would not cause me to lose heart or feel a sense of loss.

小题8:The author             （提及）to his teacher twice in his article.

小题9:This book is          (计划) for beginners.

小题10:The professor will             （发表；递送）a speech at the meeting.

Estimating schedule activity costs involves developing an（）of the costs of the resources needed to complete each schedule activity. Cost estimating includes identifying and considering various costing alternatives. For example, in most application areas, additional work during a design phase is widely held to have the potential for reducing the cost of the execution phase and product operations. The cost estimating process considers whether the expected savings can offset the cost of the additional design work. Cost estimates are generally expressed in units of（）to facilitate comparisons both within and across projects.The（）describes the business need, justification, requirements, and current boundaries for the project. It provides important information about project requirements that is considered during cost estimating.

Cost estimates are generally expressed in units of（）to facilitate comparisons both within and across projects.

A．project scope statement

B．statement of work

C．project management plan

D．project policy