A、H.R. B、Manager. C、Junior secretary . D、Senior secretary. D从对话原文可知，现在招聘的是协助Miss Karli完成工作的人，所以她是高级秘书。

M: Good afternoon. I have an appointment with Miss Karli at four o’clock.
W: That’s right. I’m Miss Karli. Do come in and sit down.
M: Thank you very much.
W: I sent you an application form. Did you receive it?
M: Yes, I did. I’ve completed it and brought it with me. Here it is.
W: Oh, thank you very much. I also sent you a copy of our Conditions of Service.
M: Yes, I’ve read it through.
W: So, now you know all about our working hours, holiday arrangements and salary scales. Are there any questions you want to ask?
M. No, thank you, everything was explained very clearly.
W: Good. Now let me tell you something about the job and the company.  Mr Ballito is the Managing Director of the Company and I’m his secretary. I have a great deal of work to do, so Mr Ballito has decided to employ a male secretary to help me.
M: Oh, I see. So my work would be to help you?
W: Yes, you would answer the telephone, do the filing and some shorthand typewriting. Can you use a duplicator?
M: Yes, I’ve learnt how to type stencils and run off copies on a duplicator at the Bank.