A、They are difficult to read. B、They are slowly falling apart. C、They were not made from wood pulp. D、They should be stored in a

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问题  
W: Excuse me, I’ve been using this old book for a research project and l notice 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 that 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 cat’s 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, books have been made from wood pulp only since the 1850s, before that they were made from materials mostly animals’ skins, and 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 book’s with this process, so we only try to rescue the most valuable 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 will bold long enough for you to finish it.

选项 A、They are difficult to read.
B、They are slowly falling apart.
C、They were not made from wood pulp.
D、They should be stored in a cold place.

答案C

解析 信息明示题。男士说books have been made from wood pulp only since the 1850s,即19世纪50年代以前的书不是由木浆做成的,所以C正确。
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