题目内容
SECTION A CONVERSATIONS
Directions: In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
听力原文：W: Excuse me, I've been using this old book for a research project and I noticed that a lot of pages are turning brown and becoming brittle.
M: Yes, unfortunately, that's a common problem with books made from wood pulp.
W: I suppose to make paper from wood that you have to add a lot of chemicals and acids to make it turn white.
M: Exactly, and it's the acid that eventually eats away the paper.
W: Oh, that actually make sense, but this book's not even 75 years old and I've seen books in museum that are hundreds of years old and they're in fine condition.
M: Well, you see, books have been made from wood pulp only since 1850, before that they were made from materials mostly animals' skins or C, no chemicals were added.
W: It's a shame those older wood pulp books are going to fall apart some day. Is there anything that can be done to preserve them.
M: En, currently the only way to stop the books from decaying is to remove the binding and treat each page individually to remove the acid.
W: That doesn't sound very economical.
M: No, it isn't. It's not practical to treat a large number of books with this process, so we only try to rescue the most valuable first edition books in our collection.
W: Well, thanks for the explanation. I'd better get back to my project.
M: Good luck, and I hope the old book hold long enough for you to finish it.
According to the man, why do modern books decay？
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Why don't the speakers have any food to eat？
A．建立该查询处理程序所用到表的视图，并对程序作相应的修改B．将该查询处理程序所用到表进行
听力原文：W: Did you know it was going to rain today？
M: Absolutely not, this comes as a total shock at me, especially since the paper said mostly sunny.
W: Well, I guess the paper must've meant "mostly sunny somewhere else". But since we've come all this way, why don't we just move the blanket under that tree.
M: That's a good idea. It looks like it's still dry there, so, as long as it doesn't start to come down any harder.
W: You didn't happen to bring a spare blanket, did you？ Because this one is all wet now.
M: No. But I do have some folding stools in the car. Will they do？
W: They will be just fine. I'm really hungry, so while you are there, how about bringing out the food？
M: I thought you were bringing the food.
W: This is unbelievable! If I weren't so hungry, this would be really funny. So what now？
M: What's the name of that restaurant you like so much again？
What are the speakers trying to do？
This passage concentrates on the issue of the ______ of the terms and concepts by experts
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