The WBS, estimates for each work package, and the network diagram are completed. Which of the following would be the NEXT thing for the project manager to do

A) Sequence the activities.
B) Verify that they have the correct scope.
C) Create a preliminary schedule and get the team's approval.
D) Complete risk management.

下列哪项是食管癌的典型症状（）

A．进行性厌食

B．进食时易梗噎

C．胸骨后烧灼感

D．胸痛、声音嘶哑

E．进行性吞咽困难