【正确答案】 B

【答案解析】[解析] 14-16
Right, everybody. Welcome to Central College library services. My name's Kathy Jenkins. I'll give you a brief introduction to the library. We have a well-stocked bank of resources which are in three main locations: the library itself, with books and periodicals; the self-access language center, with audio and video material; and the micro-computer lab. I'll start with the micro-computer lab, or micro-lab as we call it. It is fitted with 24 personal computers.
If you are a member of the library, you may borrow CALL discs in French, German, Italian, Spanish and Russian as well as English. By the way, CALL stands for computer aided language learning: C-A-double L, "CALL", for short. You may also borrow a range of word processing and desktop publishing packages. All discs are, of course, strictly for use in the micro-lab only. If you wish to print anything you should use one of the five machines around the outside of the room. Four are connected to dot-matrix printers; one is connected to the laser printer. If you want a top quality printout from the laser printer, come and see myself or any of the library staff. Dot-matrix printouts are free but there is a charge for using the laser printer.
There is always a queue to get to the terminals towards the end of term. Come in and get to know how to use the computers early in the term and use them regularly, rather than just before exams and essay deadlines, in order to avoid delay or disappointment. Training sessions are held on a regular basis, on the first and third Thursday of each month, and are free to full-time students of the college. See you there. Now, any questions?

推断的依据是独白的最后一段。在该段中，说话者首先指出：There is always a queue to get to the terminals towards to the end of the term(期末时总是要排队使用电脑终端)，然后用祈使语气建议听众(即题目中的students)在学期中早点学会并经常使用电脑，而不要等到考试前或者交论文前才去。由此可知[B]项正确。其余三项都是用原文中的个别词汇设置的干扰项。

【正确答案】 C

【答案解析】对应的信息位于独白第二段最后一句：Dot-matrix printouts are free but there is a charge for using the laser printer(点阵打印是免费的，但使用激光打印机要收费)。因此本题选[C]。其余三项都与原文不符。

【正确答案】 A

【答案解析】独白虽然以a brief introduction to the library(简要介绍图书馆)入手，但后面两段只是介绍了电脑室(micro-computer lab)的情况及其提供的服务和设施，因此独白的主旨就是Computer lab services，即[A]项，而主旨句则是独白第一段倒数第二句：I'll start with the micro-computer lab, or micro-lab as we call it(我先从微机实验室或者我们所称的微机室开始)。部分考生选择了[B]项，都是没有听清和理解整个独白，而只是听到说话者的前几句就作出判断而导致。