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
Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10,000 y
Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10,000 y
admin
2014-03-25
28
问题
Man has been storing up useful knowledge about himself and the universe at the rate which has been spiraling upward for 10,000 years.
The【C1】______took a sharp upward leap with the invention of writing, but even【C2】______it remained painfully slow for several centuries. The next great leap forward【C3】______knowledge acquisition did not occur【C4】______the invention of movable type in the 15th century by Gutenberg and others.【C5】______to 1500, by the most optimistic【C6】______Europe was producing books at a rate of 1000 titles per year. This means that it【C7】______a full century to produce a library of 100,000 titles. By 1950, four and a half【C8】______later, the rate had accelerated so sharply that Europe was producing 120,000 titles a year.【C9】______once took a century now took only ten months. By 1960, a【C10】______decade later, the rate had made another significant jump,【C11】______a century’ s work could be finished in seven and a half months.【C12】______by the mid-sixties, the output of books on a world【C13】______, Europe included, approached the prodigious figure of 900 titles per day.
One can【C14】______argue that every book is a net gain for the advancement of knowledge. Nevertheless we find that the accelerative【C15】______in book publication does, in fact, crudely【C16】______the rate at which man discovered new knowledge. For example, prior to Gutenberg 【C17】______11 chemical elements were known. Antimony, the 12th, was discovered【C18】______about the time he was working on his invention. It was fully 200 years since the 11th, arsenic, had been discovered.【C19】______the same rate of discovery continued, we would by now have added only two or three additional elements to the periodic table since Gutenberg.【C20】______in the 450 years after his time, certain people discovered some seventy additional elements. 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.
【C7】
选项
A、would take
B、had taken
C、was taking
D、would have taken
答案
A
解析
过去将来时。
转载请注明原文地址:https://jikaoti.com/ti/1UasFFFM
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Peopletravelforalotofreasons.Some-touristsgotoseebattlefieldsofreligiousshrines.Othersarelookingforculture,o
Accordingtothepassage,whichcountry’sstudentsscoredthehighestinmath?
TherearesomesocialproblemsintheUnitedStates.Anddrugabusehascometobe【21】______asoneofthemostchallengingsoc
Computersarenowbeingpushedintoschools.Weknowthatmultimediawillmake【21】______easyandfun.Childrenwillhappilyl
Whoeversaidthatvictoryhasmanyfathersanddefeatisanorphan,surelyhadneverheardoftheWorldTradeOrganization(WTO)
Hereisthestoryofrubber.FromtheearliesttimeitwascommonknowledgetothePeruvians(秘鲁人)thatwhenacutwasmadeinthe
Learningdisabilitiesareverycommon.They【21】______perhaps10percentofallchildren.Scientistsnowknowthereareman
Learningdisabilitiesareverycommon.They【21】______perhaps10percentofallchildren.Scientistsnowknowthereareman
Fathersexposedtopoisonoussubstancesareprobablyjustaslikelytobethecauseofdefectsintheirunborninfantsasmother
Who’stoblame?ThetrailofresponsibilitygoesbeyondpoormaintenanceofBritishrailways,sayindustrycritics.Stingygover
随机试题
软组织急性损伤应该使用的物理疗法有
患者男,28岁,酗酒后突发剧烈上腹绞痛10h伴呕吐、冷汗、面色苍白入院,查体:T39.1℃,P110次/分,BP83/60mmHg。腹上区压痛及反跳痛阳性,腹肌紧张,Grey-Turner征阳性。实验室检查:血清淀粉酶升高,血钙降低,下面最可能的诊断
在()场所焊接,应再增设绝缘垫板。
某工厂自有设备120台,其中:已安装设备80台,未安装设备20台,租出设备10台,已经上级主管部门批准报废设备10台;另外,该厂租人使用设备30台,其中20台已安装;已订购尚未运抵设备30台。该厂已安装设备的利用率为80%,现有设备的实际使用率约为(
[*]
计算机网络拓扑通过网中节点与通信线路之间的几何关系表示网络中实体问的——。
以下选项中叙述错误的是
Becarefulofthosewhousethetruthtodeceive(欺骗).Whensomeonetellsyousomethingthatistrue,butleavesoutimportanti
MostbanksintheUSopenat9:00or10:00andclosebetween3:00and5:00,butstayopenlateronFridays,andsomebankshave
Schoollibrariesserve【S1】______schools,middleschools,juniorhighschools,andhighschools.Themain【S2】______ofaschoolli
最新回复
(
0
)