（70）A．28
B．31
C．33
D．34

●Define Activities is the process of identifying the specific actions to be performed to produce the __(71)__.
（71）A．project elements
B．work drafts
C．work package
D．project deliverables

●Project work packages are typically decomposed into smaller componentscalled activities to provide a basis for __(72)__，scheduling，executing，and monitoring and controlling the project work.
（72）A．reviewing
B．estimating
C．auditing
D．expecting

●The Estimate Activity Resource process is closely coordinated with the __(73)__ process.
（73）A．Estimate Costs
B．Sequence Activities
C．Plan Communications
D．Conduct Procurements

●Estimating activity durations uses information on activity scope of __(74)__，required resource types，estimated resource quantities，and resource calendars.
（74）A．milestone
B．baseline
C．quality
D．work

●Developing the project schedule is often an iterative process.It determines the planned start and finish dates for project activities and milestones.Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to __(75)__ progress.
（75）A．analyze
B．track
C．level
D．extend