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 becomes bigger. B、It becomes more expensive. C、It becomes cheaper. D、It becomes much safer. CHow does silicon chips become
A、It becomes bigger. B、It becomes more expensive. C、It becomes cheaper. D、It becomes much safer. CHow does silicon chips become
admin
2009-04-23
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 mast 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.
选项
A、It becomes bigger.
B、It becomes more expensive.
C、It becomes cheaper.
D、It becomes much safer.
答案
C
解析
How does silicon chips become nowadays?
转载请注明原文地址:https://kaotiyun.com/show/U5ZK777K
0
大学英语六级
相关试题推荐
DearMr.Suzuki,ThegoodswereceivedonJuly15werefoundnottomatchourorder.ThegoodsweorderedwereItemNo.2345
DearSir,MickeyMouseisoneoftheleadingcompaniesintoyretailinglocatedintheUK.Wehaveoutletsthroughoutthewh
DearSirorMadam,Manythanksforyourletter.Wearegladtohearthatyousawouradvertisementofsilkproducts,andapp
Normallyastudentmustattendacertainnumberofcoursesinordertograduate,andeachcoursewhichheattendsgiveshimacr
7October,2008HuaxiaIndustrialCorp.903MinhuaRoadGuangzhouP.R.ChinaAttention:Mr.AllenYoungSubject:RequestforAB
A—proofofdeathI—copyrightlawB—bodilyharmJ—sumofclaimC—keywitnessK—housearrestD—rightofauthorL—permanentpopulat
A、BecausetherewasnoaccesstotheInternetB、Becausethetrafficoutsidewastoonoisy.C、Becausetheairconditionerwasout
ParkingTicket(罚单)PaymentSystemParkingticketsissuedbytheCityofTorontocanbepaidonline.Allyouhavetodois:
ThousandsofreportsandmapshavebeenscannedinandusedtomakeourGPSdevicesasaccurateaspossible.
A、Takesomemedicine.B、Haveagoodrest.C、Betreatedinhospital.D、Takeaninjection.B对话中女士说:“大夫,我感觉身体不舒服。”男士回答:“好好休息一下,这样你就
随机试题
平面π1:x一4y+z一2=0和平面π2:2x一2y—z一5=0的夹角为()
TheVoiceofAmericabeganduringtheWorldWarIIwhenGermanywasbroadcastingaradioprogramtogetinternational【21】.Ameri
(2012年第6题)Rh血型的主要抗体是
恶热、汗出、口渴、疲乏、尿黄、舌红、苔黄,脉虚数。属于
患儿男,9岁。以“自幼活动过度,冲动,难以管理1年”为主诉入院。该患儿上幼儿园以来到处攀爬,老师管理困难,常主动与小朋友挑事,追逐打闹,摔得头破血流。上课不能安静下来听老师讲课,胡乱插话,扰乱课堂秩序。关于哌甲酯(利他林)的应用注意事项包括
履约担保可采用__________形式。()
(2018年临沂)为了讲好一堂课,教师经常要“绞尽脑汁”地考虑教学方法的灵活运用及教学方法的有效组合,因为“教学有法,教无定法”。这集中体现了教师劳动的()
如图所示,一个边长为15厘米的正方形,内有一个直径为6厘米的圆,圆紧贴正方形内壁滚动一周,圆滚动时扫过的面积是多少平方厘米?(π取3.14)
求幂级数=[(3n+5)/n(n-1)]xn的收敛域与和函数。
已知y=x/lnx是微分方程的解,则φ(x/y)=()
最新回复
(
0
)