首页
登录
职称英语
The rate at which man has been storing up useful knowledge about himself and
The rate at which man has been storing up useful knowledge about himself and
游客
2023-10-16
52
管理
问题
The rate at which man has been storing up useful knowledge about himself and the universe has been spiraling upward for 10,000 years. The rate t【66】a sharp upward leap thousands of years ago, w【67】the invention of writing, but even so it remained painfully slow o【68】centuries of time. In knowledge-【69】(acquire) the next great leap forward did not occur until the invention of movable type in the fifteenth century by Gutenberg and others. Prior【70】1500, by the most optimistic est【71】, Europe was producing books at a rate of 1, 000 titles per year. This means that it would take a full century to produce a library of 100,000 titles. The rate had ac【72】so sharply by 1950, four and a half centuries later,【73】Europe was producing 120,000 titles a year.【74】once took a century now took only ten months. By 1960, a s【75】decade later, the rate had made another significant jump, so that a century’s work could be completed in seven and a half months. And, the output of books【76】a world scale by the mid sixties, Europe【77】(include) , approached the remarkable figure of
1,000 titles per day.
One can hardly argue that every book is a net gain for the advancement of knowledge. Nevertheless, we find that the increase in book publication does, in fact, crudely para【78】the rate at which man discovered new knowledge. For example, before Gutenberg only 1 chemical dements were known. Antimony (锑), the 12th, was discovered at about the time he was working on his invention. It was fully 200 years s【79】the 11th, arsenic (砷), had been discovered. Had the stone rate of discovery continued, we would by now have added only two or three additional dements to the periodic table since Gutenberg. In【80】, in the 450 years after his time, some seventy additional elements were discovered. And since 1900 we have been isolating the remaining elements not at a rate of one every two centuries, but of one every three years. [br]
选项
答案
since
解析
since the 11st, arsenic, 在第十一元素砷之后。
转载请注明原文地址:https://tihaiku.com/zcyy/3102140.html
相关试题推荐
RareamongAmericanactors,Depphasmadeanameforhimselfeffortlesslysw
RareamongAmericanactors,Depphasmadeanameforhimselfeffortlesslysw
Elevendaysago,ashefelthimselfbeingcrushedfromheadtotoe,AndrewJ
Elevendaysago,ashefelthimselfbeingcrushedfromheadtotoe,AndrewJ
Elevendaysago,ashefelthimselfbeingcrushedfromheadtotoe,AndrewJ
Elevendaysago,ashefelthimselfbeingcrushedfromheadtotoe,AndrewJ
Elevendaysago,ashefelthimselfbeingcrushedfromheadtotoe,AndrewJ
Jimmy:Ithinkhoneybeesareveryusefulinsects.Theymakehoneyforus.Amy:_
______,amanwhoexpresseshimselfeffectivelyissuretosucceedmorerapidly
______,amanwhoexpresseshimselfeffectivelyissuretosucceedmorerapidly
随机试题
WhyIndiaIsPoorandCorruptWhileJapanIsRichandCleanA)Inthe
TheStreet-LevelSolution[A]WhenIwasgrowingup,oneo
Forthispart,youareallowed30minutestowriteashortessayentitledShould
生态系统是指A.由生物群落构成的系统 B.由各种无机环境构成的系统 C.由生
R-S细胞最突出的特点是A、胞质丰富B、胞体不规则,核多C、核染色质少D、
当事人既约定定金又约定违约金的,当一方违约时,()。A.定金责任和违约金责任两
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
A.心肾 B.心肝 C.心肺肾 D.心脾肾 E.肝脾肾血虚病变,常见于
某企业是大型国有企业。该企业新领导班子上任后,作出精简内设机构等决定,将会计科撤
严重心律失常可引起 A.心源性休克 B.低血容量性休克 C.感染性
最新回复
(
0
)