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1、Unit3ComputersInawaycomputerscanbeconsideredatechnologicalrevolution.Becausetheyhave“artificialintelligence”，theycansimplifydifficultsums,“think”logicallyandsolveanydifficultmathematicalproblem.Withthedevelopmentofthenetwork,computershavebecomeveryimp
2、ortantincommunication,financeandtrade,andpeopleallovertheworldcansharetheirknowledgewithothersthroughtheWorldWideWeb.NowadaysboysandgirlsusetheirmobilephonestosurftheInternet.InordertoexplorethemoonandMars,computershavealreadybeenputintospacerockets.I
3、naword,computerscannearlydealwithmostproblemsinlife.Withthehelpofcomputers,thegoalofhumanracewillbeturnedintoreality.However,justasasayinggoes,“Everycoinhastwosides.”Personally,ifyoudon'tusecomputersproperly,somethinguncomfortablewillhappen.Forexample
4、,computergamesprogrammedbyoperatorsaresowonderfulthatalotofyoungpeoplelovethemverymuch.Theyevenplaythegamesdayandnightwithoutgoingtoschool.Asaresult,theyfailedintheirlessons.Sometimesifyoudownloadsomething,viruseswhichcanmakeyourcomputerbreakdownwilla
5、rise.Anyhow,ifyouhaveacomputer,yourlifewillbefilledwithhappiness.在某种程度上电脑可以被看作是一次技术革命。因为电脑有“人工智能”，因此它们能够简化复杂的算数题，逻辑“思考”，解决任何数学难题。随着网络的发展，电脑已经在通讯、金融和贸易方面变得非常重要。世界各地的人们可以通过万维网与其他人分享他们的知识。如今少男少女们用移动手机上网冲浪。为了探索月球和火星，已经在太空火箭上安装上了电脑。总之，电脑几乎能够处理生活中的大部分难题。在电脑
6、的帮助下，人类的目标将会变成现实。然而，正如一句谚语所说的：凡事都有利弊。我个人认为，如果你使用电脑不恰当，不如意的事情就会发生。例如，由电脑操作员编程的电脑游戏是那样奇妙，以至于很多年轻人非常喜欢它们。他们甚至日日夜夜地玩电脑游戏，不去上学。结果，他们荒废了学业。有时如果你下载一些东西，能够导致电脑瘫痪的病毒就会出现。不管怎样，如果你有一台电脑，你的生活就会充满幸福。加餐练(一) 完形阅读组合练Ⅰ.完形填空Inthemiddleoftownlivedanoldman.Onedayhe__1__h
7、iswatchinhisownstore.Itwas__2__tohimbecauseitwasfromhiswife.Aftersearching__3__inthestoreforalongwhile,he__4__toaskforhelpfromagroupofchildrenplayingoutsidethestore.He__5__themthatthepersonwhofounditwouldberewarded.__6__this,thechildrenhurriedinsideth
8、estore,wentthroughandaroundthe__7__store,butstillcouldnotfindthewatch.Soonthemanfelthopelessandwantedto__8__.Alittleboywentuptohimandaskedforanother__9__.Themanlookedathimandthought,“Whynot?__10__，thiskidlookssincereenough.”__11__themansenthim
