Question 13 is based on the conversation you have just heard.

W：I wonder if you could tell me a little bit about your job as a radio announcer. (12)What do you actually do and how do you prepare for your job?

M：Well, in the news room I am sitting with reporters and news—subs, as though I air sitting in a newspaper news room.

W：Sorry, what do you mean by news—subs?

M：(13)They are sub-editors. They are the people who write the news stories as they come in. The stories are then passed to the senior duty editor and the assistant editor. As stories go through the chain of people, they are refined, corrected and sorted out until they come finally to me and (14一1) I have a chance to read through most stories before I go on the air. Of course．sometimes things happen at the last moment and I don’t have a chance. So I've just got to do my best. and take a couple of seconds to look through the first few lines before I launch into something. Because it’s such a pity if you start off on a bright tone on a story and suddenly realize you are talking about some people having been killed in a road crash. (14—2) It is very important to just have a quick flip through. 

W：There is nothing to mark what out of entity on your piece of paper. 

M：(15)No, I have my own little mark. If it's something sad, I'II put a small cross at the top. That’s my little clue. So while I am working on the news. I'm just absorbing the news and checking pronunciations. 

13．What does the man say news—subs do?　　

对话中男士解释了news．subs的职责，说他们是副编辑，有新闻故事的时候，由他们进行编写，然后稿子才会转到高级责编和助理编辑手中做进一步处理，也就是说他们是新闻稿件的初稿撰写人，故选A。