What are the best uses of PERT

A) Used in the planning phase to do "what if" for the project.
B) Assist in the controlling of changes to the project.
C) To measure future consequences of activities.
D) A and C.

我国应大力推进“绿色工业革命”，将挑战转化为机遇，（）。

A.从“黑色发展”转向“绿色发展”

B.从“加快发展”转向“科学发展”

C.从“飞跃发展”转向“逐步发展”

D.从“高碳发展”转向“低碳发展”