A、One week. B、Two weeks. C、Three weeks. D、Four weeks. C细节辨认题。对话中，女士询问培训的时间，男士说需要三周，女士认为培训两周就够了，但男士接着解释说有些员工对电脑一无所知，因此女士最终确定培训时间为

M: Hi, Betty. May I have a discussion with you?
W: Sure. Take a seat, please.
M:(17)We are planning a training program for the new employees.(18)They have to learn how to use the machines.
W: How about the training time?
M: Normally, it takes three weeks.
W: I think two weeks’ training will be enough.
M: But some employees know nothing about the computer.
W: In that case,(19)let’s make it three weeks.
17. Who will be trained in the program?
18. What is the training program mainly about?
19. How long will the training program last?