職稱英語綜合類詞匯練習題

第頁共頁職稱英語綜合類詞匯練習題職稱英語綜合類詞匯練習題對于職稱英語綜合類而言，針對于謝詞匯進展專門的練習是很有必要的，下面為大家送上一篇職稱英語綜合類詞匯練習題。pactdisks1ifsomeonesaystoyouyourmusiccdsdon’treallyholdanymusiconthem,andtheyonlyhavenumbersrecordedonthem,youmaynotbelieveit.infact,heisrightinthatsoundisactuallyrecordedontothecdsasspecialnumbersadigitalcode.1thecodeispressedontothecdasbumpsonalongspiraltrackalmostfivekilometerslong.thesebumpsareanaverageof0.5micronswide.2asmalllaserbeamshinesontothebumpsasthecdturns.thelightisreflectedbacktoareceiverthatrecordshowthelaserlightbouncesback.thisletsthecdplayer2turnthereflectedlightbackintotheoriginalcode.thismeansyoucanheartheoriginalcodeasmusic.3digitalcodesareusedwithmanytechnologies.e-mailneedsthesekindsofcodenumbers.spaceprobesmunicatewiththeirgroundstationonearthusingdigitalcodes.barcodesarereadasdigitalcodesinputersystems.digitalmunicationswithcellphonesneeddigitalcodes.weatherradiosalsotuneintospecificsignalsusingthesecodes.4therearemanytypesofpactdisk.oneformatiscalledcd-rws.theycanberecordedonandre-recordedon(rewrittenon)asyouwoulddowithafloppydisk3.anotherformatisthecd-rom.thetechnologyforrecordingonthesedisksisdifferentfromothercds.thesecdshaveadyelayerthatthecdwritercandarkenorleaveclear.theclearanddarkspotsarethedigitalcode.cd-romstandsforpactdiscreadonlymemory.4thisdiskislikea“super”floppydiskthatcanholdlotsofinformation.onecd-romcanholdthesameamountofdataas500floppydisks.informationispermanentlyrecordedontoit.putergamesandotherprogramsareconsideredtobecd-roms.5cdswerefirstsoldtothepublicin1982.thesecdsstillplaywellandsoundfine.currentcdsareexpectedtolastbetween70to200years.ofcourse,youcanmakesureyourcdslastalongtimebytakingcareofthem.6sciencekeepsondeveloping.itmaynotbemanymoreyearsbeforeapletelynewtechnologyisinvented5andintroducedtothepublicformusicrecording.inthemeantime,thereisnodoubtyouwillcontinuetoenjoylisteningtoyourfavoritemusiconcds6andplayingyourfavoriteputergamesoncd-roms.練習:1.paragraphs1-22.paragraph33.paragraph44.paragraph5adigitalcodehaswideapplicationsbfloppydisksareoutdatedccdsaredurabledcd’sworkingprincipleisexplainedecd-rwsplaybetterthancd-rowsfcdsareofmanyformats5.oneadvantageofcd-rwsisthattheycanlikefloppydisks.6.theauthorpredictsitwillnotbeforeanewtechnologyisinventedformusicrecording.7.thelaserbeam-emittingdeviceandthereceiverareconsideredtoofacdplayer.8.spaceprobescouldnotwithoutusingdigitalcodes.ashineonbumpsbtakemanymoreyearscbethekeypartsdrestoretheoriginalcodeebewrittenonandrewrittenonfkeepcontactwiththeirgroundstationefficiently答案與題解:1.d第一、二段介紹了cd的工作原理。聲音以數碼的形式刻錄到cd磁片上。要想聽聲音，就得用cd放機，cd機用激光照射cd，接收機接收和分析^p從cd反射回來的激光波，復原為原來的數碼，再轉換為原來的聲音。所以，d是答案。2.a第三段第一句“digitalcodesareusedwithmanytechnologies.”是主題句。本段其他句子提供例證，即應用領域。作者列舉了5個領域：電郵、航天通訊、條碼、手機和天氣預報。選項a的.“digitalcodehaswideapplications”與主題句的意思完全吻合，所以是答案。3.f第四段第一句：“therearemanytypesofpactdisks.”是主題句。本段其他句子列舉了兩種常用的cd格式(format)：一種是cd-rw，另一種是cd-rom。選項f的“cdsareofmanyformats”概括了本段的大意，是答案。4.c第五段說的是cd碟片經久耐用，1982年上市的cd碟片至今還能使用，其音質照舊。如今上市的cd，更加耐用，假如使用得當，其壽命可達70～200年。選項c用了durable予以概括是很恰當的，所以，c是答案。5.e第四段中出現cd-rw這個詞，介紹了“theycanberecordedonandre-recordedon(rewrittenon)。這就是選e的根據。6.b第六段能找到與答案有關的句子，但itmaynotbemanymoreyearsbeforeapletelynewtechnologyisinventedandintroducedtothe