首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The library of congress in Washington, D.C., which【C1】______ the largest collection of books in the world, is fighting a battle
The library of congress in Washington, D.C., which【C1】______ the largest collection of books in the world, is fighting a battle
admin
2010-02-17
29
问题
The library of congress in Washington, D.C., which【C1】______ the largest collection of books in the world, is fighting a battle against paper deterioration. The【C2】______ of the old books, often yellowed and torn,【C3】______ crumble when they are touched. The main culprit in the battle is the acidic paper that has【C4】______ making books since the nineteenth century.
Air pollution and moisture【C5】______ the problem.【C6】______ , the books that are most【C7】______ destruction are not the oldest books. The paper in books produced【C8】______ the last century was made【C9】______ cotton and linen rags,【C10】______ are naturally low in acid. And the Gutenberg bible,【C11】______ five centuries ago, was made of thin calfskin, and is in【C12】______ good shape. But in the nineteenth century, with widespread literacy bringing a demand for a cheaper and more plentiful【C13】______ of paper, the industry began using 【C14】______ treated wood pulp for making paper.【C15】______ the chemical in these paper that is causing today’s problem. This problem of paper deterioration is one of【C16】______ concern. France, Canada, and Austria are all doing research into the new methods of deacidification. A new technology has been【C17】______ recently, in fact, that allows for mass deacidification of【C18】______ books at the same time. It costs less than microfilming and 【C19】______ preserves books in their original form.【C20】______ there will soon be treatment facilities all over the world to preserve and deacidify library book collections.
【C15】
选项
A、It is
B、Because of
C、Due to
D、Given
答案
A
解析
此句是强调句型结构,因此正确答案是A。
转载请注明原文地址:https://kaotiyun.com/show/JcnK777K
0
专业英语四级
相关试题推荐
PassageThreeWhatisthemainideaofthelastsevenparagraphs?
PassageTwoAccordingtotheauthor,whatisthereasonforprocrastination?
PassageThree(1)Youdonotneedtoplayinabandtobepartoftheburgeoning"gigeconomy".Nearlyeveryonehasski
PassageThreeWhatisthispassagemainlyabout?
Abroadpublicdiscussionofenvironmentalproblemsbeganinthemid-1980s,whenthefirst"green"groupsformedinopposition
Abroadpublicdiscussionofenvironmentalproblemsbeganinthemid-1980s,whenthefirst"green"groupsformedinopposition
TheUSmilitarysaysthejointmilitaryactionisaimedto_______.
Policefiredteargasandarrestedmorethan5,000passivelyresistingprotestorsFridayinanattempttobreakupthelargesta
Policefiredteargasandarrestedmorethan5,000passivelyresistingprotestorsFridayinanattempttobreakupthelargesta
TheRussianofficial’svisittoChinaaimsat______.
随机试题
脊髓灰质炎的好发年龄
下列属于财务费用的是()
女,30岁,已婚6年未孕,近3年出现痛经,经量增多,经期延长,性交痛,B超提示左附件区直径5cm之无回声区,内有点状强回声,与子宫粘连。确诊的检查是
患者,男,16岁。煤气中毒后1个月,突发昏仆,肢体抽搐,口吐涎沫,约5分钟后神志转清,自述疲乏,舌苔白腻,脉象弦滑。诊为
A.干酪样坏死B.脂肪坏死C.坏疽D.纤维素样坏死E.液化性坏死产后子宫内膜炎()
下列属于编制建设项目信息管理手册的内容的是()。
在进口货物收发货人或其代理人不在场的情况下,海关不可以自行开拆货物进行查验。()
( )是发行人发行股票时,就发行中的有关事项向公众作出披露,并向非特定投资人提出购买或销售其股票的要约邀请性文件。
景区导游服务的核心工作是()。
CDMA系统中使用的多路复用技术是(62)。我国自行研制的移动通信3G标准是(63)。
最新回复
(
0
)