【单选题】

● Your will hear a conversation between a head of department and an empleyee.● For each questions 23--30, mark one letterA,

B、orC、for the correct answer.●After you have listened once, replay the recording. The biggest problem with the computer is that ______.
A、it is diffcult for her to know the program well.
B、it regularly stops working.
C、the monitor is too small.