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
A need for beauty, lightness, corrosion resistance, or other specific properties must be present before plastic can be considere
A need for beauty, lightness, corrosion resistance, or other specific properties must be present before plastic can be considere
admin
2010-01-10
83
问题
A need for beauty, lightness, corrosion resistance, or other specific properties must be present before plastic can be considered as competitors of brick, window glass, cement, cast iron, or steel, since volumetric prices are so low for the last substance and for wood. It is not particularly unfortunate that plastics do not appear economical for every use. There is no reason why industry should want to replace wood, brick, concrete, and metals when the latter are adequate and inexpensive. Too much has been written about the coming "Plastics and Light Metal Age," which is prophesized as the successor to the Stone Age, the Bronze Age, and the Iron Age. In the historical sequence of these earlier periods, there is logic in the quantitative sense; one age gave way to another when the use of a new material exceeded in quantity that of its predecessor. For the plastics and light metals, however, a different picture presents itself; less than 3,000,000 tons of all these materials are being produced annually, while steel production exceeded 90,000,000 tons last year and will probably not recede to less than 60,000,000 tons for many years. This is still the Iron Age or rather the Steel Age.
The writer regards the change to a "Plastic and Light Metal Age" in the near future as _________.
选项
A、necessary
B、desirable
C、improbable
D、logical
答案
C
解析
本文结尾“This is still the Iron Age or rather the Steel Age.”清楚地表明了作者的态度,作者认为近期向“塑料及轻质金属时代”转变是不大可能的。
转载请注明原文地址:https://kaotiyun.com/show/fv6K777K
0
专业英语四级
相关试题推荐
Fromtheanti-utopiawritingsofAldousHuxleyandH.G.WellstomovieslikeMatrix,theriseofthemachinehaslongterrified
(1)Sometimesyoucanknowtoomuch.Theaimofscreeninghealthypeopleforcanceristodiscovertumourswhentheyaresmallan
(1)DirectorsofOccidentalPetroleumCorp.wanttokeepChiefExecutiveRayR.Iranisafe.Sotheyspent$774,756lastyearonh
(1)DirectorsofOccidentalPetroleumCorp.wanttokeepChiefExecutiveRayR.Iranisafe.Sotheyspent$774,756lastyearonh
(1)TheParis-basedInternationalEnergyAgency(IEA),initsannualforecast,saidanumberoffactors,includingthesoaringcos
(1)Substantialchangesinthenation’smadcowtestingsystemwereorderedyesterdayafterBritishtestsonacowslaughteredin
AuniquesocialphenomenonexistsexclusivelyinChina—chunyun,orSpringFestivalTravelRush.Thefollowingexcerptisabouth
Whatmightdrivingonanautomatedhighwaybelike?TheanswerdependsonwhatkindofsystemisultimatelyadoptedTwodist
Thefightforthe$800billionU.S.groceryindustryhasjustbegun.Amazonhasshakenuptheplayingfield,traditionalgroce
随机试题
各子带之间不允许有间隙。()
下列哪些是机械通气的并发症()
A.合谷、太阳、睛明、太冲B.风池、翳风、印堂、合谷C.合谷、承泣、四白、阴陵泉D.睛明、攒竹、行间、太阳E.听宫、太阳、太冲、丝竹空治疗脾胃湿热型麦粒肿最适宜的处方是
下列隧道开挖方法中,属于双侧壁导坑开挖法的是()。
根据个人所得税栩关规定。下列残疾人员的所得中.经本人申请、主管税务机关审核批准可按各省、自治区、直辖市人民政府规定减征的范围和幅度.减征个人所得税的有()。
(2013年真题)属于著作权限制方式“法定许可”范畴的转载、摘编,仅限于()
坚持推动构建人类命运共同体,必须统筹国内国际两个大局,始终不渝走和平发展道路、奉行()的开放战略。
行政诉讼中,人民法院审理行政案件,可以参照()。
关于刑法的溯及力,我国采取的原则是()
以下描述中,是8086工作于最大模式的特点的是( )。 Ⅰ 适用于多处理机系统 Ⅱ 通过编程来设定的工作模式 Ⅲ 需要总线控制器8288 Ⅳ M/IO引脚可以直接引用
最新回复
(
0
)