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
48
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 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:http://tihaiku.com/zcyy/3209106.html
相关试题推荐
Shewas______withthebeautyofHelenofTroy,andtheintelligenceofEinstei
WhoistrueofLisa?[br][originaltext]Sally:Now,specificallyinthatsen6,
Afewcommonmisconceptions:Beautyisonlyskin-deep.One’sphysicalasset
Afewcommonmisconceptions:Beautyisonlyskin-deep.One’sphysicalasset
Aneedforbeauty,lightness,corrosionresistance,orotherspecificprope
Babiesarebornwithaneyeforbeauty.Infantsonlyhoursoldwillchooseto
Babiesarebornwithaneyeforbeauty.Infantsonlyhoursoldwillchooseto
Itisbelievedthatthebeautyofthevalleyisbeyond______.A、compareB、compa
Shewasregardedasabeautywhenshewasatcollege.Aftergivingbirthtoaba
Thecompanypurchasedseveralcomputersprogrammedto______thespecifictasks
随机试题
Thefloodreferredtointhepassage______.[br]Themeaningofthesentence"B
Spending50minuteswithacellphoneclosetoyourearisenoughtochange
TimeManagementforCollegeStudentsTimeyouspentinh
Brushingandflossingcansurelykeepyourteethandgumshealthy.[br]Flossing
Sincethedeathofherhusband,shegotintothehabitof___________(让门一直关着).
患者,男,40岁。胃脘胀满而痛,不思饮食,四肢倦怠,舌苔白腻,脉弦滑。治疗应选用
叶酸类似物抑制的反应有( )。A.嘌呤核苷酸的从头合成 B.嘌呤核苷酸补救合
证券分析师应当非常谨慎地处理所获得的非公开信息。()
不是缩宫素特点的是A.对子宫体兴奋作用强 B.大剂量引起子宫平滑肌强直性收缩
支气管扩张的典型临床表现为A.慢性咳嗽、痰中带血,伴胸痛、杵状指,病变部位可有湿
最新回复
(
0
)