1、1Unit3 Computers.阅读理解Companiesthathaveinvested(投资)heavilyinbigdatawanttoknowhowtomakesmartinvestmentsthatwilldistinguishthemfromthecompetitionandenablethebestpossiblereturnbeforemakingthedecisiontogoallin.Inthepast,notallenterprisebigdataplanswentasplanned.Thesefailuresarenotusuallypublished,buttheb
2、igdatafailurerateisunusuallyhigh.AccordingtoGartner,only15%ofbusinessesmakeitpasttheexperimentalstageoftheseprojects.Ourfear,asleadersoftechnologycompanies,isthatwithsomuchattentionsurroundingartificialintelligence,thepressureisonforustoapplythetechnologywithoutfirstsettingclearbusinessgoalsandunder
3、standingthedifferencesbetweenartificialintelligenceandmachinelearningandhowtheyshouldbeapplied,thusriskingfallingbehindthemanydecision-makerswhoareadoptingtechnologies.Itseasytogetcaughtupinthegreatexpectationofartificialintelligenceaswellasitspromoted,includingbreakthroughslikedeeplearning,butthose
4、lookingtomakeanoutsizedinfluenceshouldinsteadfocusongoodold-fashionedmachinelearningorcheaplearning.Thedistinctionissimple:cheaplearningisaboutusingbasicmachinelearningtechniquesonstraightforwarddatasetsindifferentpartsofacompanytoproducealargenumberofsmall,gradualimprovements.Deeplearning,ontheothe
5、rhand,isaspecificpartofmachinelearning.Deeplearningisacollectionofadvancedmachinelearningapproachesthatmakebusinessdecisionsbasedonhighlycomplexdatasetspossible.Fortasksofanalysingrawdata,suchasimagesandvoicerecordings,deeplearningisbest.Butwhenitcomestoworkingonsimplified,structuredtypesofdata,weve
6、foundcheapmachinelearningwilldothetrick.Whenyouconsiderthatthemajorityofdataflowingthroughenterprisesfallsintothissecondcategory,itsclearwhichtoolmakesthemostsense. 1.Whatdoweknowaboutinvestmentinbigdatafromthefirstparagraph?A.Itssecret. B.Itssafe.C.Itsrisky. D.Itsfruitful.2.Whichofthefollowingaddst
7、othepressureontheleadingtechnologycompanies?A.Understandingartificialintelligenceandmachinelearning.B.Wastingtoomuchtimeonartificialintelligence.C.Fallingbehindothercompanies.D.Actingwithunclearbusinessgoals.3.Whatshouldcompanieswithambitionsconcentrateon?A.Astronginfluence. B.Bigbreakthroughs.C.Che
8、aplearning. 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。2Everythingisonlinethesedays,anditssoeasytosearchonlineforwhateveryouwant.TheInternetisavaluabletool,butitseasytofin
9、dyourselfdisturbedbyit.Forexample,youreworkingonanessay,andyouneedtodosomesearchonline. 1 Beforeyouknowit,youvespentanhourreadingmoreinformationthanyoullbeabletouse.Maybeyounoticeanattractivetitleorsomethingelsethatdrawsyouawayfromyourwork. 2 Addictiontosocialmediaiscloselyrelatedtoourgeneraladdicti
10、ontotheInternet.Everyoneisalwaysontheirphones. 3 Asaresult,whenIgettowork,Idonthaveenoughattentionandenergytoputtowardsthetask.Ifthissoundslikeyou,thenyourproductivityhassufferedbecauseofthewayyouusetheInternet. 4 Soweshouldlearntolivewithit.TheonlywaytostoptheInternetfromoccupyingallyourtimeandconc
11、entrationistodisconnect.Whenyoudisconnect,youllgetyourattentionbackandworkproductively.Thus,whenworkingonachallengingtask,keepyourphoneoutofreach.Meanwhile,gointoyourworkwiththeintentionofhavinggreaterfocusandenergysothatyoullbediscouragedfromusingtheInternet. 5 Thispressurewillhelpyougetthejobdoneo
12、ntime. A.Yoursearchtermsbringback20pagesofresults.B.Onthewhole,theInternetcanbeahelporablock.C.Itwilldrawyourattentiontomoreimportantmatters.D.TheInternethaschangedthewayourworldfunctions.E.Asaresult,timedisappearsbutyoustilldontfinishyourwork.F.Ihavesurelycaughtmyselfcheckingmyphoneeverytenminutes.
13、G.Besides,youcanforceyourselftocompleteyourtaskinthefixedtime.完形填空Oneday,LukeFortunedrovefromOregontoPortland,whereheparkedhiscarinapaidgarageovernight.Thenextmorning,he 1 thecarswindowhadbeenbroken,alongwithhis 2 forthefuture:hiscomputerwas 3 . “Everythingimportanttomewasonthatcomputer,” saidFortun
14、e. “Ifelt 4 .” Twodaysafterthe 5 ,anotheryoungmancalledFortune.MasoudAlmazroueiwasanexchangestudentfromtheUnitedArabEmirates.Hedbeen 6 byamanwhosaidhehadacomputerforsale.Only$200.Almazrouei 7 acomputer,soheboughtit,tookithome,andturnediton.Withinseconds,hesawfilesandphotographs. “Iwonderedwhowould 8
15、 acomputerwithallofthisonit,” hesaid. “I 9 itcouldbestolen.” Almazroueifoundwhatappearedtobetheownersphonenumberandcalledit 10 . “Hetoldmethestoryandsaiditwashisfault.Ithoughtitwasa 11 .Itoldhimifhereallyhadthe 12 ,heshouldtakeittothepolice,” Fortunesaid. 13 ,apoliceofficercalledFortunetosaythataman
16、haddroppedthecomputeroffandsaidhewas 14 .Hepassedonthemansnumber.FortunecalledandthankedAlmazroueiand 15 payinghimarewardof$200themoneyhewasout.Almazrouei 16 . Whenareportaboutthetwoyoungmensstorymadeittothelocalpapers,Almazroueirece3iveda(n) 17 fromWimWiewel,thethenpresidentoftheuniversitywhereAlma
17、zroueiwasstudying.Impressedwithhisstudents 18 ,WiewelgaveAlmazroueianewcomputer. “Wethoughtsinceyou 19 thecomputer,weshouldgiveyouacomputersothatyoullhaveone,” Wieweltoldhim. “Werevery 20 you.” 1.A.expected B.concludedC.discovered D.remembered2.A.dreams B.skillsC.decisions D.imaginations3.A.robbed B
18、.hiddenC.broken D.gone4.A.special B.sadC.absurd D.regretful5.A.theft B.conflictC.adventure D.emergency6.A.inspired B.remindedC.interviewed D.approached7.A.operated B.neededC.possessed D.assessed8.A.return B.likeC.sell D.throw9.A.realized B.predictedC.admitted D.guaranteed10.A.unwillingly B.cautiousl
19、yC.immediately D.automatically11.A.mistake B.catastropheC.misunderstanding D.trick12.A.chance B.computerC.bravery D.experience13.A.Besides B.HoweverC.Afterwards D.Therefore14.A.sorry B.movedC.lucky D.terrified15.A.enjoyed B.practisedC.succeededin D.insistedon16.A.ignored B.refusedC.hesitated D.withd
20、rew17.A.invitation B.apologyC.warning D.call18.A.honesty B.achievementC.independence D.determination19.A.tookback B.paidbackC.gaveback D.heldback20.A.tiredof B.proudof4C.curiousabout D.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
21、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,andyouneedtodosomese
22、archonline.”, 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
23、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
24、 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;intervie
25、w 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.C Almazrouei 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.A Almazrouei 意识到它一定是被偷的。realize 意识到;predict 预测;admit 承认;5guarantee担保。10.C Almazrouei 发现了疑似电脑主人的电话号码,立即给他打电
26、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。 besid
27、es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.D Fortune 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.B Almazrouei 拒绝了。ignore 忽略;refuse 拒绝;hesitate 犹豫;withdraw 收回。17.D Alm
28、azrouei 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.C Wiewel 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.B Wiewel 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。6