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
Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse
Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse
admin
2010-08-04
56
问题
Technological invention has directly or indirectly produced social change in every period of history. The invention of the horse collar in the Middle Ages was a【B1】______technological advance for agriculture; the【B2】______for use at sea so【B3】______navigation in the fifteenth century that it led in the age of【B4】______; and the steam engine was an【B5】______factor in the industrialization of Europe in the nineteenth century.
A discovery is another kind of technological【B6】______. While inventions add something new to a culture, discoveries increase our knowledge of something that already exists. Gravity had always been there, but Newton "discovered" it: be【B7】______how this natural force worked and how its laws【B8】______to falling bodies. This knowledge made possible many new inventions.【B9】______.
Since each invention makes more inventions possible, the speed of technological development tends to accelerate. Benjamin Franklin experimented with electricity in the eighteenth century,【B10】______. In the hundred years since Edison invented the light bulb, the discovery of electricity has led to tens of thousands of inventions, from the internal burning engine to the computer.【B11】______pose some of tile greatest challenges of our time.
【B7】
选项
答案
observed
解析
动词,与空格相关的句意为:重力总是存在的,但是牛顿发现了它,他______这个自然力如何起作用以及它的规律如何应用于下落物体。这两个宾语都是要靠观察才能进行,故此处为observe的过去式。
转载请注明原文地址:https://kaotiyun.com/show/h8A7777K
0
大学英语四级
相关试题推荐
Meteor-psychologists(气象心理学家)areconcernedwithhowtheweatheraffectsthebehaviourofpeople.Oneareaoftheirconcernisi
A、5minutes.B、25minutes.C、30minutes.D、35minutes.B
A、Hehadsomeonereturnthekey.B、HeaskedTomtoreturnthekeyforJohn.C、HegotthekeyfromTom.D、Thekeywasleftinside
Smokingmeanssomethingdifferenttovariouscultures.In【B1】______,manypeoplesmoke.Inwinter,itisoftendifficultto【B2】_
Forthispart,youareallowedthirtyminutestowriteacompositiononthetopicTheAppropriateTeacher.StudentRelationship.
A、Mary’sson.B、Theman’sson-in-law.C、Mary’sfiance.D、Theman’sson.B推理题。从对话中可知Mary是这个男子的女儿。这个男子在问过“How’sTom?”。Mary回答说:他
Chinalauncheditssecondmannedspacemission.sendingtwoastronautsintoorbitasitopenedanew【B1】______initsambitiousd
Chinalauncheditssecondmannedspacemission.sendingtwoastronautsintoorbitasitopenedanew【B1】______initsambitiousd
A、Leisuresportingactivities.B、Averageageofathletes.C、Durabilityofsportingequipment.D、Friday’sbusinessmeeting.A女士的第
随机试题
在完全竞争市场上,厂商使用要素的利润最大化原则是()
设un≤avn(n=1,2,…)(a>0),且收敛,则【】
A.石膏B.知母C.黄芩D.射干阴虚燥咳宜选用
肺动脉瓣口血流的正常多普勒频谱不具备下列哪项特点()
制备包合物的方法有()
吸烟引起的口腔癌发病部位多在
案情:普天药业股份有限公司成立于2005年,刚开业的2年来,公司的经营状况良好,股票的形势一路走高。甲、乙、丙三人看好公司的经营前景,遂于2006年年底分别购入了该公司2%、3%、5%的股票,一直到2007年上半年.三人获益颇丰。2007年年底,在持有公司
吴某生产了价值20余万元的伪劣洗发水,正准备运往市场销售,恰逢工商行政管理工作人员依法检查,吴某指使工人使用暴力阻碍检查,将国家工作人员打成轻伤。吴某的行为:
阅读下面的材料,按照要求作文。苏轼《题西林壁》诗中有“横看成岭侧成峰,远近高低各不同”之句,从不同的角度观察庐山看到了不同的景象。在我们生活、工作、学习也是如此。根据材料所引发的思考和感悟,写一篇论说文。要求:角度自选,立意自定,标题自拟;不少
第二次工业革命的最显著的标志()。
最新回复
(
0
)