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Unit3 Computers.阅读理解Companiesthathaveinvested(投资)heavilyinbigdatawanttoknowhowtomakesmartinvestmentsthatwilldistinguishthemfromthecompetitionandenablethebestpossiblereturnbeforemakingthedecisiontogoallin.Inthepast,notallenterprisebigdataplanswentasplanned.Thesefailuresarenotusuallypublished,butthebigdatafailurerateisunusuallyhigh.AccordingtoGartner,only15%ofbusinessesmakeitpasttheexperimentalstageoftheseprojects.Ourfear,asleadersoftechnologycompanies,isthatwithsomuchattentionsurroundingartificialintelligence,thepressureisonforustoapplythetechnologywithoutfirstsettingclearbusinessgoalsandunderstandingthedifferencesbetweenartificialintelligenceandmachinelearningandhowtheyshouldbeapplied,thusriskingfallingbehindthemanydecision-makerswhoareadoptingtechnologies.Itseasytogetcaughtupinthegreatexpectationofartificialintelligenceaswellasitspromoted,includingbreakthroughslikedeeplearning,butthoselookingtomakeanoutsizedinfluenceshouldinsteadfocusongoodold-fashionedmachinelearningorcheaplearning.Thedistinctionissimple:cheaplearningisaboutusingbasicmachinelearningtechniquesonstraightforwarddatasetsindifferentpartsofacompanytoproducealargenumberofsmall,gradualimprovements.Deeplearning,ontheotherhand,isaspecificpartofmachinelearning.Deeplearningisacollectionofadvancedmachinelearningapproachesthatmakebusinessdecisionsbasedonhighlycomplexdatasetspossible.Fortasksofanalysingrawdata,suchasimagesandvoicerecordings,deeplearningisbest.Butwhenitcomestoworkingonsimplified,structuredtypesofdata,wevefoundcheapmachinelearningwilldothetrick.Whenyouconsiderthatthemajorityofdataflowingthroughenterprisesfallsintothissecondcategory,itsclearwhichtoolmakesthemostsense.1.Whatdoweknowaboutinvestmentinbigdatafromthefirstparagraph?A.Itssecret.B.Itssafe.C.Itsrisky.D.Itsfruitful.2.Whichofthefollowingaddstothepressureontheleadingtechnologycompanies?A.Understandingartificialintelligenceandmachinelearning.B.Wastingtoomuchtimeonartificialintelligence.C.Fallingbehindothercompanies.D.Actingwithunclearbusinessgoals.3.Whatshouldcompanieswithambitionsconcentrateon?A.Astronginfluence.B.Bigbreakthroughs.C.Cheaplearning.D.Deeplearning.4.Whatdoestheunderlinedphrase “dothetrick” inthelastparagraphreferto?A.Invest.B.Cheat.C.Function.D.Simplify.阅读七选五根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Everythingisonlinethesedays,anditssoeasytosearchonlineforwhateveryouwant.TheInternetisavaluabletool,butitseasytofindyourselfdisturbedbyit.Forexample,youreworkingonanessay,andyouneedtodosomesearchonline.1Beforeyouknowit,youvespentanhourreadingmoreinformationthanyoullbeabletouse.Maybeyounoticeanattractivetitleorsomethingelsethatdrawsyouawayfromyourwork.2AddictiontosocialmediaiscloselyrelatedtoourgeneraladdictiontotheInternet.Everyoneisalwaysontheirphones.3Asaresult,whenIgettowork,Idonthaveenoughattentionandenergytoputtowardsthetask.Ifthissoundslikeyou,thenyourproductivityhassufferedbecauseofthewayyouusetheInternet.4Soweshouldlearntolivewithit.TheonlywaytostoptheInternetfromoccupyingallyourtimeandconcentrationistodisconnect.Whenyoudisconnect,youllgetyourattentionbackandworkproductively.Thus,whenworkingonachallengingtask,keepyourphoneoutofreach.Meanwhile,gointoyourworkwiththeintentionofhavinggreaterfocusandenergysothatyoullbediscouragedfromusingtheInternet.5Thispressurewillhelpyougetthejobdoneontime.A.Yoursearchtermsbringback20pagesofresults.B.Onthewhole,theInternetcanbeahelporablock.C.Itwilldrawyourattentiontomoreimportantmatters.D.TheInternethaschangedthewayourworldfunctions.E.Asaresult,timedisappearsbutyoustilldontfinishyourwork.F.Ihavesurelycaughtmyselfcheckingmyphoneeverytenminutes.G.Besides,youcanforceyourselftocompleteyourtaskinthefixedtime.完形填空Oneday,LukeFortunedrovefromOregontoPortland,whereheparkedhiscarinapaidgarageovernight.Thenextmorning,he1thecarswindowhadbeenbroken,alongwithhis2forthefuture:hiscomputerwas3. “Everythingimportanttomewasonthatcomputer,” saidFortune. “Ifelt4.”Twodaysafterthe5,anotheryoungmancalledFortune.MasoudAlmazroueiwasanexchangestudentfromtheUnitedArabEmirates.Hedbeen6byamanwhosaidhehadacomputerforsale.Only$200.Almazrouei7acomputer,soheboughtit,tookithome,andturnediton.Withinseconds,hesawfilesandphotographs. “Iwonderedwhowould8acomputerwithallofthisonit,” hesaid. “I9itcouldbestolen.” Almazroueifoundwhatappearedtobetheownersphonenumberandcalledit10.“Hetoldmethestoryandsaiditwashisfault.Ithoughtitwasa11.Itoldhimifhereallyhadthe12,heshouldtakeittothepolice,” Fortunesaid.13,apoliceofficercalledFortunetosaythatamanhaddroppedthecomputeroffandsaidhewas14.Hepassedonthemansnumber.FortunecalledandthankedAlmazroueiand15payinghimarewardof$200themoneyhewasout.Almazrouei16.Whenareportaboutthetwoyoungmensstorymadeittothelocalpapers,Almazroueireceiveda(n)17fromWimWiewel,thethenpresidentoftheuniversitywhereAlmazroueiwasstudying.Impressedwithhisstudents18,WiewelgaveAlmazroueianewcomputer. “Wethoughtsinceyou19thecomputer,weshouldgiveyouacomputersothatyoullhaveone,” Wieweltoldhim. “Werevery20you.”1.A.expectedB.concludedC.discoveredD.remembered2.A.dreamsB.skillsC.decisionsD.imaginations3.A.robbedB.hiddenC.brokenD.gone4.A.specialB.sadC.absurdD.regretful5.A.theftB.conflictC.adventureD.emergency6.A.inspiredB.remindedC.interviewedD.approached7.A.operatedB.neededC.possessedD.assessed8.A.returnB.likeC.sellD.throw9.A.realizedB.predictedC.admittedD.guaranteed10.A.unwillinglyB.cautiouslyC.immediatelyD.automatically11.A.mistakeB.catastropheC.misunderstandingD.trick12.A.chanceB.computerC.braveryD.experience13.A.BesidesB.HoweverC.AfterwardsD.Therefore14.A.sorryB.movedC.luckyD.terrified15.A.enjoyedB.practisedC.succeededinD.insistedon16.A.ignoredB.refusedC.hesitatedD.withdrew17.A.invitationB.apologyC.warningD.call18.A.honestyB.achievementC.independenceD.determination19.A.tookbackB.paidbackC.gavebackD.heldback20.A.tiredofB.proudofC.curiousaboutD.concernedabout课时作业(八).【文章大意】 本文是一篇科技说明文。投资大数据的成功率很低;人工智能的突破涉及深度学习,而深度学习和简单学习适用于不同的企业执行不同的任务。1.C细节理解题。根据第一段最后一句可知,投资大数据的失败率相当高,风险巨大,故选C。2.D细节理解题。根据第二段第二句可知,运用这种技术而没有预先设定清晰的商业目标会带来压力,故选D。3.C细节理解题。根据第三段中的内容可知,那些想要有极大影响的(即有抱负的)企业要集中精力于好的、旧式的简单学习,故选C。4.C词义猜测题。根据最后一段第一句并结合第二句可推知,此处dothetrick是“起作用”的含义,故选C。.【文章大意】 本文是一篇说明文,主要讲述了网络在给人们带来便利的同时,也带来了一些困扰。1.A承接上文“Forexample,youreworkingonanessay,andyouneedtodosomesearchonline.”,并与下文“Beforeyouknowit,youvespentanhourreadingmoreinformationthanyoullbeabletouse.”呼应可知,网络搜索会有很多结果,故选A。2.E承接上文“Beforeyouknowit,youvespentanhourreadingmoreinformationthanyoullbeabletouse.”可推知,浏览网络上的众多信息需要花费很多时间,因此会耽误工作,故选E。3.F承接上文“Everyoneisalwaysontheirphones.”,并与下文的具体实例结合可推知,此处表示作者自己曾沉溺于手机,故选F。4.B结合下文“Soweshouldlearntolivewithit.”,并结合对本文的整体理解可推知,此处是一个过渡句,起到承上启下的作用,总结了网络有利有弊,故选B。5.G承接下文“Thispressurewillhelpyougetthejobdoneontime.”可推知,要准时完成任务就给自己一些压力,强迫自己去做事,故选G。.【文章大意】 本文是一篇记叙文,讲述Almazrouei归还被盗的电脑的故事。1.C第二天早晨,他发现汽车的玻璃被打碎了。expect预期;conclude 结束;discover 发现;remember记得。2.A此处指他的梦想就像被打碎的玻璃一样破灭了。dream梦想;skill技能;decision 决定;imagination想象。3.D根据上下文可知,他的电脑不见了。rob抢劫;hide隐藏;break 打碎;go离去。4.B电脑不见了,所以他感觉很悲伤。special特别的;sad悲伤的;absurd 荒谬的;regretful后悔的。5.A根据上下文可判断,这是一起盗窃案。theft 盗窃;conflict冲突;adventure 冒险;emergency紧急情况。6.D一个男人走近他,说他有一台电脑要卖。inspire 激发;remind提醒;interview采访;approach接近。7.B根据“soheboughtit,tookithome,andturnediton.”可知,Almazrouei需要一台电脑。operate操作;need需要;possess拥有;assess评估。8.CAlmazrouei想知道谁会卖一台装有这些文件和照片的电脑。return 返回;like喜欢;sell销售;throw投。9.AAlmazrouei意识到它一定是被偷的。realize意识到;predict预测;admit 承认;guarantee担保。10.CAlmazrouei 发现了疑似电脑主人的电话号码,立即给他打电话。unwillingly不情愿地;cautiously谨慎地;immediately立即;automatically自动地。11.D根据“heshouldtakeittothepolice,”可知,Fortune认为这是一个恶作剧。mistake错误;catastrophe大灾难;misunderstanding 误会;trick恶作剧。12.B根据前文可知,Fortune是说如果他真的有这台电脑,他应该把它交给警察。chance 机会;computer 电脑;bravery勇敢;experience经历。13.C后来,一位警官给Fortune打电话。 besides此外;however然而;afterwards然后;therefore因此。14.A根据“Hetoldmethestoryandsaiditwashisfault.”可知,他说他很抱歉。sorry抱歉的;moved感动的;lucky幸运的;terrified恐惧的。15.DFortune坚决要求给Almazrouei200美元作为报答。enjoy 享受;practise 练习;succeedin成功;insiston坚决要求。16.BAlmazrouei 拒绝了。ignore忽略;refuse拒绝;hesitate犹豫;withdraw收回。17.DAlmazrouei 接到了他当时所在大学的校长WimWiewel的电话。invitation邀请;apology道歉;warning 警告;call电话。18.A被他的学生的诚实所打动,Wiewel给了Almazrouei一台新电脑。honesty诚实;achievement成就;independence 独立;determination决心。19.CWiewel说因为Almazrouei归还了电脑,他应该奖给他一台电脑。takeback 拿回;payback 偿还;giveback 归还;holdback阻止。20.BWiewel为学校培养出像Almazrouei这样的学生而感到骄傲。betiredof 厌烦;beproudof 为而感到骄傲;becuriousabout好奇,想知道;beconcernedabout关心,担忧。
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