A．They punish those who intend to do job-hopping.
B．They encourage them to make their own choice.
C．They set tight rules and offer long service rewards.
D．They force them to abide by the policies.

A．The woman must ask the professor to take a longer vacation.
B．The woman won’t be able to get an extension.
C．No one knows whether it is possible for the woman to get a longer time.
D．There is a question about the period of time allowed for completion of the paper.