首页
登录
职称英语
A need for beauty, lightness, corrosion resistance, or other specific prope
A need for beauty, lightness, corrosion resistance, or other specific prope
游客
2023-11-22
49
管理
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. [br] The writer considers that the Bronze Age succeeded the Stone Age because
选项
A、there was a scarcity of wood and other building materials
B、bronze was less expensive than stone
C、stone was no longer available
D、more bronze than stone came into use
答案
D
解析
文中有"one age gave way to another when the use of a new material exceeded in quantity that of its predecessor.”因此更多的青铜使用率是主要原因。
转载请注明原文地址:http://tihaiku.com/zcyy/3209105.html
相关试题推荐
Thereareanumberofbeautycontestsacrosstheworld,themostfamous
Afewcommonmisconceptions.Beautyisonlyskin-deep.One’sphysicalassets
Afewcommonmisconceptions.Beautyisonlyskin-deep.One’sphysicalassets
Afewcommonmisconceptions.Beautyisonlyskin-deep.One’sphysicalassets
Specifically’equippedplaneshavebeenused______.[originaltext]Specific
Shewas______withthebeautyofHelenofTroy,andtheintelligenceofEinstei
WhoistrueofLisa?[br][originaltext]Sally:Now,specificallyinthatsen6,
WhoistrueofLisa?[originaltext]Sally:Now,specificallyinthatsen6,youme
Aneedforbeauty,lightness,corrosionresistance,orotherspecificprope
Babiesarebornwithaneyeforbeauty.Infantsonlyhoursoldwillchooseto
随机试题
From2007to2010,Americanhouseholdslost$11trillioninrealestate,sav
RiftswerealreadyopeningupintheG20asChinahitoutatBritainandthe
Positivemoodisnotuniversallydesirable:______(处于负面情绪中的人不容易有判断上的失误).peoplein
Ausefuldefinitionofanairpollutantisacompoundaddeddirectlyorindi
旋覆花入汤剂的用法是A.后下 B.包煎 C.烊化 D.先煎 E.冲服
根据相机抉择的财政政策,当经济处于萧条时,采取的财政政策不包括:A、举借公债扩大
施工中的材料根据()划分,可分为实体材料和非实体材料两类。A.材料消耗的性质
男性,65岁,肠梗阻术后1周,大便后突然出现胸痛,呼吸困难。体检:心率130次
以下填入“□”处的名称与图中标志对应正确的是: A.①绿色食品②保
铲运机按照卸土方式分为( )三类。A.强制式 B.半强制式 C.自行式
最新回复
(
0
)