职称英语理工类B级阅读判断专项测试及答案解析文档格式.docx

职称英语理工类B级阅读判断专项测试及答案解析文档格式.docx

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　　第一篇

　　DiningCustom

　　Everylandhasitsowndiningcustom,andtheUnitedStatesisnoexception.Americansfeelthatthefirstruleofbeingapoliteguestistobeontime.Ifapersonisinvitedtodinnerat6：

30,thehostessexpectshimtobethereat6：

30ornotmorethanafewminutesafter.Becausesheusuallydoesherowncooking,shetimesthemealsothatthecoffeeandmeatwillbeattheirbestatthetimesheaskstheguesttocome.Ifheislate,thefoodwillnotbesogood,andthehostesswillbedisappointed.Whentheguestcannotcomeontime,hecallshishostorhostessonthetelephone,givesthereason,andtellsatwhattimehethinkshecancome.

　　Asguestscontinuetoarrive,themeninthegroupstandwhenawomanentersandremainstandinguntilshefoundachair.Amanalwaysriseswhenheisbeingintroducedtoawoman.Awomandoesnotrisewhensheisbeingintroducedeithertoamanorawomanunlessthewomanismucholder.

　　Whentheguestssitdownatadinnertable,itiscustomaryforthementohelptheladiesbypushingtheirchairsunderthem.

　　EvenanAmericanmaybeconfusedbythenumberofknives,forks,andspoonsbesideshisplatewhenhesitsdowntoaformaldinner.Theruleissimple,however：

usethemintheorderinwhichtheylie,beginningfromtheoutside,orwatchthehostessanddowhatshedoes.Thesmallforkontheoutsideontheleftisforsalad,whichisoftenservedwiththesoup.Thespoononbutterspreader,onasmallbread-and-butterplateattheleft.Asthebreadispassed,eachguestputshis

　　pieceonthebread-and-butterplate.

　　1.Asacountryofimmigrants,theU.S.doesnothaveitsowndinningcustoms.

　　A.Right

　　B.Wrong

　　C.Notmentioned

　　2.Theguestisexpectedtoarriveontimebecausethecoffeeandmeatwillbeattheirbestatthetimeheisrequiredtocome.

　　3.Awomanusuallyriseswhensheisbeingintroducedtoanagedgentleman.

　　4.Atadinnertable,itiscustomaryforthementoarrangechairsforladies.

　　5.AtformalAmericandinner,theknives,forks,andspoonsbesidestheplateareplacedinacertainorder.

　　6.Therightordertousetheknives,forksandspoonsataformaldinnerisfromthelefttotheright.

　　7.Ataformaldinner,breadisusuallyservedtogetherwithsaladandsoup.

　　第二篇

　　ComputerMouse

　　Thebasiccomputermouseisanamazinglycleverinventionwitharelativelysimpledesignthatallowsustopointatthingsonthecomputeranditisveryproductive.Thinkofallthethingsyoucandowithamouselikeselectingtextforcopyingandpasting,drawing,andevenscrolling（上下移动文本）onthepagewiththenewermicewiththewheel.Mostofususethecomputermousedailywithoutstoppingtothinkhowitworksuntilitgetsdirtyandwehavetolearnhowtocleanit.Welearntopointatthingsbeforewelearntospeak,sothemouseisaverynaturalpointingdevice.Othercomputerpointingdevicesincludelightpens,graphicstabletsandtouchscreens,butthemouseisstillourworkhorse.

　　Thecomputermousewasinventedin1964byDouglasEnglehartofStanfordUniversity.Ascomputerscreensbecamemorepopularandarrowkeyswereusedtomovearoundabodyoftext,itbecameclearthatapointingdevicethatallowedeasiermotionthroughthetextandevenselectionoftextwouldbeveryuseful.Theintroductionofthemouse,withtheAppleLisacomputerin1983,reallystartedthecomputerpublicontheroadtorelyingonthemouseforroutinecomputertasks.

　　Howdoesthemousework?

Wehavetostartatthebottom,sothinkupsidedownfornow.Itallstartswiththemouseball.Asthemouseballinthebottomofthemouserollsoverthemousepad,itpressesagainstandturnstwoshafts.Theshaftsareconnectedtowheelswithseveralsmallholesinthem.Thewheelshaveapairofsmallelectroniclight-emittingdevicescalledlight-emittingdiodes（LED）mountedoneitherside.OneLEDsendsalightbeamtotheLEDontheotherside.Asthewheelsspin（转）andaholerotatesby,thelightbeamgetsthroughtotheLEDontheotherside.Butamomentlaterthelightbeamisblockeduntilthenextholeisinplace.TheLEDdetectsachangingpatternoflight,convertsthepatternintoanelectronicsignal,andsendsthesignaltothecomputerthroughwiresinacablethatgoesoutofthemousebody.Thiscableisthetailthathelpsgivethemouseitsname.Thecomputerinterpretsthesignaltotellitwheretopositionthecursor（光标）onthecomputerscreen.

　　Sofarwehaveonlydiscussedthebasiccomputermousethatmostofyouprobablyhav