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
15
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] 【C8】
选项
A、since
B、after
C、from
D、before
答案
D
解析
根据上下文,所出书的纸是由棉布和麻布制成的,应该是在上个世纪以前。因此正确答案是D。
转载请注明原文地址:https://tihaiku.com/zcyy/3205393.html
相关试题推荐
Whatkindofaplanewasitthatcrashed?[br][originaltext]Washington--A
Whatkindofaplanewasitthatcrashed?[originaltext]Washington--Asight
WashingtonfeltuncomfortableinCongressdebatesbecausehe_______.[br][orig
WashingtonfeltuncomfortableinCongressdebatesbecausehe_______.[br][orig
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhas
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhas
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhas
Itwouldbeverydifficultforalibrarytobewithoutdictionariesandencyclop
Outdooradvertisingprovidestheadvertiserwiththelargestcolourfuldisplay
Thelargestsystemservinge-mailmessengersistheInternet,a______ofmillio
随机试题
[originaltext]W:Hello,IntelCompany...CanIhelpyou?M:I’dliketospeak
Liminal:TateBritain(泰特英国美术馆),InformationDesk:Everyweekend11:00—15:0
[originaltext]Goodafternoon,ladiesandgentlemen.Today,I’dliketotalk
On______sideofthestreetwerestandingyoungboysandgirlstowelcomethePr
[originaltext]Whatcanhospitalsdotohelppatientsrecoverfasterfrom
某护士周末独自值班,下午3点应为某昏迷病人进行雾化吸入。护士一个人特忙特累,觉得
高等学校科学研究的任务有()。A.为国家提供全面的人才支持 B.推进基础
正常情况下,各单位应依据检测基准周期、项目、标准开展带电检测和停电试验。
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
某公司按照2/20,N/60的条件从另一公司购入价值1000万元的货物,
最新回复
(
0
)