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
54
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.
【C17】
选项
A、produced
B、developed
C、carried out
D、experimented
答案
B
解析
根据习惯搭配:develop a new technology(开发一种新技术)。carry out:实现、实施。experiment:实验。因此正确答案是B。
转载请注明原文地址:https://kaotiyun.com/show/WcnK777K
0
专业英语四级
相关试题推荐
PassageOne(1)Arthurwastakentothehugemediaevalfortressattheharbour’smouth.Hefoundprisonlifefairlyendurab
PassageOneWhatisthegiftthatNewYorkgivestoitsresidents?
PassageThree(1)Youdonotneedtoplayinabandtobepartoftheburgeoning"gigeconomy".Nearlyeveryonehasski
PassageThreeWhatisthispassagemainlyabout?
PassageTwoWhatdidLeahMacleanmainlycomplainabout?
Howmanyattacksandclasheswerereportedinthisnews?
WashingtonfeltuncomfortableinCongressdebatesbecausehe_______.
TheGermandelegationwenttoWashington______
Policefiredteargasandarrestedmorethan5,000passivelyresistingprotestorsFridayinanattempttobreakupthelargesta
Thenewsitemreporteda(n)______.
随机试题
党的群众路线教育实践活动的主要任务是反对“四风”,即反对()、形式主义、官僚主义及享乐主义。
患者,女,29岁。孕3产0,妊娠34周。第一胎人工流产,第二胎为脊柱裂畸形,于妊娠24周时引产。此次妊娠早期无异常情况。妊娠32周时B超检查提示:羊水偏多,胎儿大于妊娠月份,未见明显畸形。孕妇体型肥胖,有多饮、多尿、多食史。可能的诊断是
A.亲密距离B.个人距离C.工作距离D.公众距离E.社会距离护士为患者查体时应采用
建筑工程文件归档包括()检验批质量验收记录。
居住区的配建设施标准与下列哪些项因素相关?
如果一个企业属于SWOT矩阵的第二象限,那么该企业宜采取的战略是()。
石榴:火红
天才与对称[法]雨果天才与凡人的不同之处,在于所有的天才都具有双重性,恰如意大利哲学家杰洛墨,卡尔当所说,红宝石与水晶玻璃之别,就在于红宝石具有双重折射。天才与红宝石一样,都有着双重反光,双重折射。在精神与物质领域,此种现象彼此。相同。我不知红宝石这种
窗体上有一个名称为List1的列表框,一个名称为Text1的文本框,一个名称为Labe11、Caption属性为"Sum"的标签,一个名称为Command1、标题为“计算”的命令按钮。程序运行后,将把1~100之间能够被7整除的数添加到列表框中。如果单击
将E-R图转换为关系模型时,实体和联系都可以表示为()。
最新回复
(
0
)