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外语
A、Because they were made from wood. B、Because the temperature there is low. C、Because there is no chemicals added. D、Because the
A、Because they were made from wood. B、Because the temperature there is low. C、Because there is no chemicals added. D、Because the
admin
2013-09-09
87
问题
W: Excuse me,(12)I’ve been using this old book for a research project and I noticed that a lot of pages are turning brown and becoming delicate.
M: Yes, unfortunately, that’s a common problem with books made from wood.
W: I suppose to make paper from wood, 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 makes 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,(13)books have been made from wood only since 1850’s. Before that they were made from materials mostly animals’ skins or cloth based, no chemicals were added.
W: It’s a shame those older books made from wood are going to fall apart some day. Is there anything that can be done to preserve them?
M: En,(14)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.(15)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 books hold long enough for you to finish it.
选项
A、Because they were made from wood.
B、Because the temperature there is low.
C、Because there is no chemicals added.
D、Because the readers are more careful.
答案
C
解析
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0
大学英语四级
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