首页
登录
职称英语
[originaltext] Human beings have used tools for a very long time. In some pa
[originaltext] Human beings have used tools for a very long time. In some pa
游客
2023-09-12
80
管理
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://tihaiku.com/zcyy/3008888.html
相关试题推荐
[originaltext]Pursesnatchingisanincreasinglycommoncrime.Therearees
[originaltext]Pursesnatchingisanincreasinglycommoncrime.Therearees
[originaltext]"Hightech"and"stateoftheart"aretwoexpressionsthatd
[originaltext]"Hightech"and"stateoftheart"aretwoexpressionsthatd
[originaltext]Wehumanshavefoundcountlessmysteriesoftheuniversewith
[originaltext]M:Oneofthemostcommonquestionsweaskaboutpeople’sbehavio
[originaltext]M:Oneofthemostcommonquestionsweaskaboutpeople’sbehavio
[originaltext]M:Excuseme.Areyougoingtobuyconcerttickets?W:Yes,Iam.
[originaltext]M:Excuseme.Areyougoingtobuyconcerttickets?W:Yes,Iam.
[originaltext]UniversityteachingintheUnitedKingdomisverydifferenta
随机试题
Youwillheararadiointerviewaboutthesportswearindustry.Foreachquestion
Whatareyouropinionsabouttheadvantagesanddisadvantagesof"fastfood"
TheMysteryoftheMayasTheruinsofonce-bea
如图3-1,已知A(100m,100m)、B(200m,200m),方位角α0=
整体变更控制过程基于项目的执行情况对项目的过程进行控制。以下关于整体变更控制的描
A.活疫苗B.死疫苗C.类毒素D.抗毒素E.转移因子预防结核用
根据《社会保险法》,下列关于社会保险基金的说法中,正确的是()A.社会保险基金通
下面软件中,属于操作系统的有( )。A.UNIX B.Windows C.
期货公司执行非受托人的交易指令造成客户损失的,以下表述中正确的是()。A.期货
( )常用于拖动对调速要求较高的生产机械。A.直流电动机 B.绕线式电动机
最新回复
(
0
)