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
2010-05-25
72
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
推断题。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/rV2K777K
0
专业英语四级
相关试题推荐
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
Theweatherconcernseveryoneandhaseffectonnearlyeveryhumanactivity.Itoccurswithintheatmosphere,thegaseousfluid
Aestheticthoughtofadistinctivelymodernbentemergedduringthe18thcentury.Thewesternphilosophersandcriticsofthist
Nomatterhowmuchyouflattenthehierarchiesatyourcompany,communicationcan’timproveifpeople’sdesksarestucktenfloo
WilliamPennplannedPhiladelphiaasthe"holycity",carefully______sothateachhousewouldhavetheappearanceofacountry
Itisonlywhenyounearlylosesomeone______fullyconsciousofhowmuchyouvaluehim.
Noonecandenythatpesticidehaveimprovedtheabilityoffarmerstobringtheircropstomarket.【C1】______pesticides,farmer
Noonecandenythatpesticidehaveimprovedtheabilityoffarmerstobringtheircropstomarket.【C1】______pesticides,farmer
Ascientificdiscoveryisoftenmade【C1】______beforesomeoneisabletoputittouse.【C2】______,scientistsdiscoveredhow
随机试题
根据病人的临床表现应首先考虑的诊断是为明确诊断应进一步检查
A.高热B.抽搐C.三偏征D.脑膜刺激征明显E.脑脊液大多正常内囊区出血的表现是()
审计人员对某企业2006年12月31日的银行存款进行清查,查得银行存款日记账余额为58000元,银行对账单余额为60540元,并发现以下情况:(1)银行从企业中扣除借款利息1580元,企业未入账。(2)企业12月29日开出转账支票一张4880元,银行未
商业银行向某客户提供一笔3年期的贷款1000万元,该客户在第1年的违约率是0.8%,第2年的违约率是1.4%,第3年的违约率是2.1%。假设客户违约后,银行的贷款将遭受全部损失。则该笔贷款预计到期可收回的金额为()。
下列各项中.将导致企业所有者权益总额发生增减变动的是()。
电脑动画是一种表现力极强的电脑设计手段,在形式上分()种。
阅读下面材料,回答问题。花拆张晓风花蕾是蛹,是一种未经展示未经破坏的浓缩的美。花蕾是正月的
自居易在听琵琶女的演奏后,写下来“同是天涯沦落人,相逢何必曾相识”的诗句,这是艺术鉴赏效应中的()。
巴贝克起义的领导人是巴贝克一个虔诚的胡拉米派教徒,该派受()的影响,认为世界存在着善恶二神,恶神带来了暴力、压迫和社会不平等。
Forthispart,youareallowed30minutestowriteashortessayonthetopicofTheLosingofTraditionalCulture.Youshouldw
最新回复
(
0
)