Conversation One
　　M: Oh,Janna, you're early! I'm happy you're here early today because I'd like to discuss your attendance for a moment.
　　W: Gee, Dr.Livingston, (19) I'm really sorry about missing class yesterday.
　　M: Actually,(19)it's been several days.(20)Counting today, we've only had 6 classes, yet you've already missed 4.It's more than a half. You won't be able to pass if you're constantly absent. And I really don't want to fail anyone.
　　W: Sorry, I've been extremely busy. I can explain for it. Dr.Livingston. I have a part-time job, so...
　　M: Well, I hope you're already for today's exam.
　　W: Today? I thought it was Monday!
　　M: Read the syllabus, Janna; this is precisely what I'm talking about. You should either make an effort to attend, or you should consider withdrawing while it's still possible.
　　W: What do you mean?
　　M: Today's the final day you can withdraw and get a full refund.
　　W: Maybe I really should. What do you suggest?
　　M: I wish you could attend classes regularly; however, if you don't believe you're capable of this, then don't waste your money.
　　W: Thanks, Dr.Livingston. I really appreciate your advice. If it's okay,(21) I suppose I'll go ahead and drop the class.
　　M: It's entirely up to you, but that might be best if you don't think things are going to change. Excuse me, the students are coming, and I've got to get ready for class. I wish you the very best of luck, Janna.
　　W: Thank you, Dr.Livingston. Goodbye.
　　Questions 19 to 21 are based on the conversation you have just heard.
　　19. What is the woman's problem?
　　B)。【解析】四个选项均为现在完成进行时态，由此可以推断，本题考查的内容可能是某人最近一段时间发生的事情或者持续的状态。女士解释说，抱歉，昨天没有来上课(missing class)。男士说，并不仅仅是昨天，一共上过6次课，已经缺了4次。由此可见女士的问题在于并没有每天都来上课(hasnt been attending class every day)。故正确答案为B)。
　　20. How many classes has the woman attended?
　　A)。【解析】四个选项均为数字，由此可以推测，本题的考查内容是关于数字的。 从男士的话中可知，一共上过6次课，女士一共缺了4次(missed 4)。相减得到女士上课的次数为2次。故正确答案为A)。
　　21. What does the woman decide to do?
　　C)。【解析】四个选项均为不定式，由此可以推测，本题考查的内容可能是关于某个决定。女士说如果可行，就决定退课(drop the class)。可见女士打算放弃这门课程，故正确答案为C)。
　　Conversation Two
　　W: Dr.Thomas? This is Keet Bradley from the daily news.(22)I'd like to ask you some questions about the new official standard weight that you purchased.
　　M: I'd be happy to help you. What would you like to know?
　　W: First of all, how was the standard weight used?
　　M: Well, the people in our department (23)use it to check the scales all over the country. The department of weights and measures, we are a government agency. It's our responsibility to see that (23)all the scales measure a kilogram accurately so this is the way we use to adjust the scales.
　　W: How did you check the scales before?
　　M: We have an old standard weight that we used to use.(24)It had to be replaced because it was imprecise. You see it was made of poor quality metal that was too porous. It absorbed too much moisture.
　　W: Oh. So when the weather was humid it weighed more and when it was dry it weighed less.
　　M: Exactly. And that variation can affect the standards of the whole country. So our department had the new weight made out of higher quality metal.
　　W: How much did it cost?
　　M: About 45 thousand dollars.
　　W: 45,000 dollars? For one kilogram weight? That's more expensive than gold.(25)Is it really worth that much?
　　M: (25)I'm sure it is. Industries depend on our government agency to monitor the accuracy of scales so that when they buy and sell their products there is one standard. Think of the drug industry, for example, those companies rely on high accuracy scales to manufacture and package medicine.