听力原文:M: Hi, Joan. I see you are working on your spreadsheet. How are your sales figures matching up to our goals? W: I' m doing fine. I' m 15% ahead of my sales from last year and I was only projecting a 10% increase. That will help me get recognized by management, and if I continue at this rate, they'll increase my area. M: That' s great. Did you get your commission check yet? W: Not yet. It comes at the end of the month. I am going to make more money, but more is deducted in taxes, too. So, it's not as much of an increase as you might expect. What is the main advantage for Joan' s career, if her increased sales continue?