A、About 5％. B、About 14％. C、About 15％. D、About 20％. A由原文可知，只有15％到20％的招聘在公共媒介上刊登广告，只有5％的求职者能通过广告找到工作。因此答案为A。

M: Take the season for thousands of new college graduates to find a job. The process can be intimidating (令人胆怯的), but thanks to a strong economy, there is good news for the graduates. Vera Black of AIC Company, AJC Personal Finance, has some advice to help new grads into the working world. Vera, it’s good to see you.
W: Good morning, Robert. Nice to see you.
M: So the job market is good, right?
W: It’s very good. Employers planned to hire about 14％ more grads this year than last year. Yeah, it’s the best job market we’ve seen in 4 or 5 years.
M: And what do you attribute this hiring surge to?
W: Ah, largely a reflection of the economic conditions. Conditions are good, and hiring is on the up.
M: You’ve got some advice, er, for college grads as they’re looking for a job. The first thing you say is do not rely on the Internet. Why?
W: I mean, do not rely on the Internet as your only job-searching strategy. It’s fine if it’s a component of the strategy, but it should not be your only strategy. Because only about 15 or 20 percent of the jobs are advertised in any public medium and only about 5 percent of the job seekers actually end up getting a job through an advertisement. So your best job-searching tool: networking.
M: Networking? What is networking?
W: Get out there, go to your college and ask them for a list of local alumni who are in the field that you’re interested in pursuing. Find out about relevant trade organizations, attend some varied functions and if you get some leads, try to set-up a few informational interview^
M: And what do you mean by the informational interviews?
W: Just a great way really to learn more about the industry. You might pick up a few leads or get a few contacts. Much better than sending your resume out blindly.
M: I see. OK, you’ve done all these things. Now you’re ready for the real doing. You wanna go into an interview to get a job.
W: Right.
M: What advice do you have for the interview?
W: Firstly, you should go in there confidently, and ready to take charge. You should know all about the company before you go in there. You wanna be a good listener. Because ultimately whether you get the job could boil down to your interviewing skills and your report with the interviewers. So you wanna come across confident, and poised (泰然自若的，镇定的). You wanna ask very intelligent questions. And be enthusiastic (热情的).
M: OK, Vera Black as always, it’s good you could be here.
W: Thank you, Robert.
6. What is the talk mainly about?
7. How many job seekers actually get a job through an advertisement?
8. According to the woman, what’s the best tool to find a job?
9. Which is the right interpretation of networking?
10. Which is comparatively the most important advice for the interviewee?