首页
登录
职称英语
The library of congress in Washington, D.C., which【C1】______ the largest co
The library of congress in Washington, D.C., which【C1】______ the largest co
游客
2023-11-21
19
管理
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. [br] 【C19】
选项
A、still
B、yet
C、ever
D、else
答案
A
解析
此句的意思是:它比微缩摄影耗费要少,却能保存书的原状。Yet用于否定句中。因此正确答案是A。
转载请注明原文地址:https://tihaiku.com/zcyy/3205404.html
相关试题推荐
Whatkindofaplanewasitthatcrashed?[originaltext]Washington--Asight
WashingtonfeltuncomfortableinCongressdebatesbecausehe_______.[br][orig
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhas
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhas
WhichofthefollowingisproperdescriptionformembersofCongress’attitudet
WhichofthefollowingisproperdescriptionformembersofCongress’attitudet
Itwouldbeverydifficultforalibrarytobewithoutdictionariesandencyclop
TheMainLibraryhasfivefloorsopentothepublic. FOURTHFL
Outdooradvertisingprovidestheadvertiserwiththelargestcolourfuldisplay
Thelargestsystemservinge-mailmessengersistheInternet,a______ofmillio
随机试题
HowtoSpeakGoodEnglishManylearnershavedifficultyincommunicatin
[originaltext]M:Iwishwehadtakenanumbrella.W:That’smyfault.Ithought
当一种期权处于深度实值或深度虚值时,其时间价值都将趋向于零。()A、正确B、错误A期权执行价格和市场价格的差额越大,则时间价值越小。当一种期权处于深
指数基金的说法正确的有()。 ①管理费较低 ②交易费较低 ③有效降低非系
A.芥子苷B.番泻苷C.朝藿定CD.宝藿苷E.淫羊藿苷《中国药典》2015年版规
建设项目选址规划管理的主要管理内容包括()。A.建设项目基本情况 B.建
“孤府”指A.胃 B.胆 C.膀胱 D.三焦
子宫腺肌病是指子宫内膜异位于A.子宫肌层 B.输卵管 C.卵巢 D.盆腔组
下面四个成语或俗语中哪一句说的就是典型的正迁移现象?() A.举一反三B.
通过生产要素的优化配置,有效控制实际成本,属于()。A.组织措施 B.技术
最新回复
(
0
)