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
A、It was one of the first tools. B、It developed human intelligence. C、It led to the invention of machines. D、It was the key to t
A、It was one of the first tools. B、It developed human intelligence. C、It led to the invention of machines. D、It was the key to t
admin
2010-05-09
62
问题
Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than million years ago. They made these tools by hitting one stone against another. In this way they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily.
Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to success of mankind.
Since 1960 a new kind of tool has appeared. This is the silicon chip—a little chip of silicon crystal. It is smaller than a finger-nail, but it can store more than a million "bits" of information. It is an electronic brain.
Every year these chips get cleverer but their size gets smaller, and their cost gets less. They are used in watches, calculators and intelligent machines that we can use in many ways.
In the future we will not need to work with tools in the old way. Machines will do everything for us. They will even talk and play games with us. People will have plenty of spare time. But what will they do with it?
选项
A、It was one of the first tools.
B、It developed human intelligence.
C、It led to the invention of machines.
D、It was the key to the success of mankind.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/baOK777K
0
大学英语六级
相关试题推荐
A、It’snotalwaysclearwhypeoplebehaveincertainways.B、Peopleusuallyblameothersfortheirmistakes.C、Certaincondition
A、Thetwospeakerswillcontinuetalkingandbecomefriends.B、Thetwospeakerswillspendtheirvacationtogether.C、Thewoman
Forthispart,youareallowed30minutestowriteashortessayentitledOnFakeCommodities.Youshouldwriteatleast150wor
Inwhatwayishistoryimportanttous?Theword"incompatible"inthelastparagraphmostprobablymeans"______".
A、Totellwhat"hightech"and"stateoftheart"are.B、Totellhow"hightech"and"stateoftheart"havedeveloped.C、Togiv
TheSupremeCourtoftheUnitedStatesmadeanimportantrulein1954.Itwasthatpublicschoolsneededtobe(36)______.Child
A、Workersontheplatformsandtrainswerereplacedbymachines.B、Acompletelyautomaticlinewasaddedtoitsnetwork.C、Itbe
A、Workersontheplatformsandtrainswerereplacedbymachines.B、Acompletelyautomaticlinewasaddedtoitsnetwork.C、Itbe
A、Themanshouldstartrunningdaily.B、Shealsopreferstoexerciseintheafternoon.C、It’simportanttowarmupbeforeexerci
A、Languagelaboratory.B、Traveling.C、Studyinginhighschool.D、GoingtomoviesandwatchingTV.B4个选项中有3个是动词的现在分词,基本可以将非现在分词项,
随机试题
在宁夏北周李贤墓中出土的鎏金银瓶,是通过丝绸之路流传到中国的具有萨珊风格的金银器。银瓶腹中部半浮雕的6个人物,系手工打压而成,工艺精湛,银瓶上的人物故事源于希腊,银瓶精美绝伦,独一无二。该项出土文物()。
合同一方当事人延迟履行合同义务的,对方当事人有权解除合同。()
评价专题的主要评价T作内容包括调查水文地质基本状况和地下水的开采利用状况、()和选择预防对策和措施。
居住区规划总用地包括居住区用地和其他用地两类。其中居住区用地可分为:
事业单位结余分配的内容包括()。
上海市旅游咨询服务中心的基本功能分为咨询、服务两大部分。()
2011年,机电产品的出口额占Z省出口额的比重比高新技术产品约高()。
Everyhumanbeinghasuniquearrangementofskinonhisfingersandthisarrangementisunchangeable.Scientistsandexpertshav
在下列Windows98内置的支持多媒体功能的组件中,( )既支持二维与三维图像信色的处理,又支持音频和视频信息的处理。
在数据库管理系统的层次结构中,由高级到低级的层次排列顺序为
最新回复
(
0
)