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
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 tha
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 tha
admin
2013-10-11
24
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 two 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 the 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?
Human beings used stone chips for more than two million years, but human life changed very little in that time. We have used silicon chips for only a few years, but life is changing faster every day. What will life be like twenty years from now? What will the world be like two million years from now?
At the end of the passage the author seems to suggest that life in future is ______
选项
A、disastrous.
B、unpredictable.
C、exciting.
D、colorful.
答案
B
解析
本题要求读者体会文章最后一段的深层含义。作者运用对比的手法,强调了“硅晶体使用时间虽短,却极大地改变了人们的生活”这个事实。这说明了随着科学技术的迅猛发展,人类的将来变得越发难以预测。
转载请注明原文地址:https://kaotiyun.com/show/umGK777K
0
专业英语四级
相关试题推荐
ThechiefclaimtodistinctionofShoreditchliesinthefactthatthefirsttheatersofLondonwerebuiltthereintheseventee
WhichofthefollowingisTRUEaboutthenewlibrary?
TheconferenceaddressesthefollowingissuesEXCEPT______.
Ifyourchildonlypicksathisfood,hecanbetrainedtobeagoodeater.Thatwillhappenonlywhenyou’vechangedsome
Theintroductionoffabricsmadefromrayon,nylonandother______fibershasmademanychangesinourcivilization.
Whyhasn’tthewomanboughtapresentforJim?
Infact,asheapproachedhisbeloveddaughter,heonlybarelyresistedthe______tostrokeherprettysofthair.
Withthebreakneckspeedatwhichtoday’sbusinessesmove,there’sonemantrawe’dalldowelltoremember;Changeisconstant.
Theywere______byasenseoftroubleahead.
Thetuitionfeesare______tostudentscomingfromlow-incomefamilies.[2007]
随机试题
查尔斯.琼斯和马瑟斯在文中根据政府提案的来源,将公共政策主体划分为政府内部和政府外部两大类。()
QSC&Vhasbeenthefoundationthat【36】McDonald’ssuccess.QSC&V【37】theMcDonald’s【38】ofQuality,Service,Cleanliness,andValue
风湿性心脏病最常见的瓣膜损害部位是( )
依据《海商法》的规定,下列关于承运人对集装箱装运的货物的责任期间的表述哪个是正确的?
( )应对监理文件、施工文件和工程档案的编制责任、编制套数和移交期限做出明确规定。
垃圾转运站规划除按要求布置收集点外,还应使清运路线合理,以有效地发挥人力、物力作用。路线设计应考虑的方面中,不合理的是()。
“十三五”时期,要推动建立()相结合的旅游紧急救援体系,推进国家旅游紧急救援基地建设,鼓励有条件的旅游企业建立紧急救援队伍。
试对赫尔巴特和杜威的教育思想进行比较。
小明是某幼儿园大班的孩子,在该幼儿园里,他是出了名的“身强体壮”的顽皮鬼,和其他小朋友矛盾不断,今天上午又挨了老师的一顿狠批。事情是这样的:前几天,小明所在的班刚转来了一个小朋友李朋,李朋个子也比较高,这样,小明和李朋成为该班仅有的两个“高个”。小明主动找
A、 B、 C、 D、 E、 B因为n≥2时,有所以,故本题应选B.
最新回复
(
0
)