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
2013-01-10
72
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 tt3at 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/eRhK777K
0
专业英语四级
相关试题推荐
Mobilephonenowadayscreatesanewwayoflife,butmeanwhileitbringsaboutembarrassingsituationsandmobilephoneetiquett
OnereasonforthesuccessesofAsianimmigrantsintheU.S.isthattheyhavetakengreat______toeducatetheirchildren.
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherstars.Theatmospher
Oneoftheadvantagesofmostpaidworkisthatitgiveschancesofsuccessandopportunitiesforambition.Inmostworksuccess
WhenSpanishfootballclubBarcelonapaidUS$35millionforRonaldinholastsummer,theyweren’tbuyingaprettyface."Iam【C1】
OnApril8thEnvisat,Europe’slargestEarth-observingsatellite,unexpectedlystoppedtalkingtoitsusersontheEarthbelow.
CordiaHarringtonwastiredofstandingupalldayandsmellinglikeFrenchfriesatnight.SheownedandoperatedthreeMcDonal
Soconfused______thathedidn’tknowhowtostarthislecture.
TheFBIsoundedawarningagainstapossibleattackintheUnitedStatesbecause______
随机试题
一般在肠梗阻发生________,X线检查即显示出肠腔内气体;立位或侧卧位透视或拍片,可见________和________________。
A.遗传性球形红细胞增多症B.海洋性贫血C.遗传性椭圆形红细胞增多症D.丙酮酸激酶缺乏症E.自体免疫性溶血性贫血体内产生自身抗体的是
随着生活节奏的加快,过度的劳累常会使生理功能衰退或脏腑功能紊乱,导致各种疾病,从而出现各种虚证,而治疗虚证的中成药应根据机体虚损的具体情况,有针对性的选择。天王补心丹中的三参是
具有经营毒性中药资格的企业采购毒性中药饮片,必须从持有毒性中药饮片定点生产证的生产企业和具有经营毒性中药资格的批发企业购进。()
公开透明地合理确定()的最佳途径就是通过施工总承包人与工程建设项目招标。人共同组织的招标。
拖拉机厂电工张某,自恃技术熟练,在检修电路时不按规定操作,造成电路着火,部分设备被烧毁,损失十多万元,张某的行为构成()。
杜威认为人的行为的善恶是从“——”标准评价出来的,能满足人的愿望、需要和兴趣的就是有道德价值的。
说一说“一带一路”的定义及内涵。(北京师范大学2016)
(2011上集管)以下对信息系统集成的描述不正确的是______。
在VisualFoxPro中,要运行菜单文件menu1.mpr,可以使用命令( )。
最新回复
(
0
)