2022年华中科技大学远程与继续教育学院管理学作业英语练习和答案考解读

1A2D3B4D5C1A2D3B4A5DReadingComprehensionThebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbusinessclass.Inthelast15years,pilotshavereportedwellover100incidentsthatcouldhavebeencausedbyelectromagneticinterference.Thesourceofthisinterferenceremainsunconfirmed,butincreasingly,expertsarepointingtheblameatportableelectronicdevicessuchasportablecomputers,radioandcassetteplayersandmobiletelephones.RTCA,anorganizationwhichadvisestheaviationindustry,hasrecommendedthatallairlinesbansuchdevicesfrombeingusedduring"critical"stagesofflight,particularlytake-offandlanding.Someexpertshavegonefurther,callingforatotalbanduringallflights.Currently,rulesonusingthesedevicesareleftuptoindividualairlines.Andalthoughsomeairlinesprohibitpassengersfromusingsuchequipmentduringtake-offandlanding,mostarereluctanttoenforceatotalban,giventhatmanypassengerswanttoworkduringflights.Thedifficultyispredictinghowelectromagneticfieldsmightaffectanaircraft'scomputers.Expertsknowthatportabledevicesemitradiationwhichaffectsthosewavelengthswhichaircraftusefornavigationandcommunication.But,becausetheyhavenotbeenabletoreproducetheseeffectsinalaboratory,theyhavenowayofknowingwhethertheinterferencemightbedangerousornot.Thefactthataircraftmaybevulnerabletointerferenceraisestheriskthatterroristsmayuseradiosystemsinordertodamagenavigationequipment.Asworrying,though,isthepassengerwhocan'theartheinstructionstoturnoffhisradiobecausethemusic'stooloud.1.Thepassageismainlyabout__A___.A.apossiblecauseofaircraftcrashesB.thedefectsofelectronicdevicesC.effectivesafetymeasuresforairflightD.anewregulationforallairlines2.Whatissaidabouttheover100aircraftincidentsinthepast15years?DA.Theymayhavebeencausedbythedamagetotheradiosystems.B.Theywereprovedtohavebeencausedbythepassengers'portablecomputers.C.Theymayhavetakenplaceduringtake-offandlanding.D.Theyweresuspectedtohaveresultedfromelectromagneticinterference.3.Fewairlineswanttoimposeatotalbanontheirpassengersusingelectronicdevicesbecause___B__A.theyhaveothereffectivesafetymeasurestofallbackonB.mostpassengersrefusetotakeaplanewhichbanstheuseofradioandcassetteplayersC.theydon'tbelievethereissuchadangerasradiointerferenceD.theharmfuleffectofelectromagneticinterferenceisyettobeproved4.Whyisitdifficulttopredictthepossibleeffectsofelectromagneticfieldsonanairplane'scomputers?DA.Becauseitremainsamysterywhatwavelengthsareliabletobeinterferedwith.B.Becauseitisextremelydangeroustoconductsuchresearchonanairplane.C.Becauseexpertslackadequateequipmenttodosuchresearch.D.Becauseresearchscientistshavenotbeenabletoproducethesameeffectsinlabs.5.Itcanbeinferredfromthepassagethattheauthor___C__.A.hasoverestimatedthedangerofelectromagneticinterferenceB.regardsitasunreasonabletoexerciseatotalbanduringflightC.hasn'tformedhisownopiniononthisproblemD.isinfavorofprohibitingpassengers'useofelectronicdevicescompletelyTherearedesertplantswhichsurvivethedryseasonintheformofinactiveseeds.Therearealsodesertinsectswhichsurviveasinactivelarva(幼虫.Inaddition,difficultasitistobelieve,therearedesertfishwhichcansurvivethroughyearsofdroughtintheformofinactiveeggs.Thesearetheshrimps(虾thatliveintheMojaveDesert,anintenselydryregioninthesouthwestoftheUnitedStateswhereshadetemperaturesofover50°Careoftenrecorded.TheeggsoftheMojaveshrimpsarethesizeandhavetheappearanceofgrainsofsand.Whensufficientspringrainfallstoformalake,onceeverytwotofiveyears,theseeggshatch.Thenthewaterissoonfullofmillionsoftinyshrimpsaboutamillimetrelongwhichfeedontinyplantandanimalorganismswhichalsogrowinthetemporarydesertlake.Withinaweek,theshrimpsgrowfromtheiroriginal1millimetretoalengthofaboutl.5centimetres.Throughoutthetimethattheshrimpsarerapidlymaturingthewaterinthelakeequallyrapidlyevaporates.Thereforefortheshrimpsitisaraceagainsttime.Bythetwelfthday,however,whentheyareabout3centimetreslong,hundredsoftinyeggsformontheunderbodiesofthefemales.Usuallybythistime,allthatremainsofthelakeisalarge,muddypatchofwetsoil.Onthethirteenthdayandthenext,duringthefinalhoursoftheirbrieflives,theshrimpslaytheireggsinthemud.Then,havingensuredthattheirspecieswillsurvive,theshrimpsdieasthelastofthewaterevaporates(蒸发.Ifsufficientrainfallsthenextyeartoformanotherlake,theeggshatch,andonceagaintheshrimpspassrapidlythroughtheircycleofgrowth,adulthood,egg-laying,anddeath.Someyearsthereisinsufficientraintoformalake;inthiscase,theeggswillremaindormantforanotheryear,orevenlongerifnecessary.1.WhatisunusualabouttheMojaveShrimps?AA.Theylaytheireggsinthemudonly.B.Theirlivesareverybrief.C.Theireggscansurviveinintensivedryregion.D.Theyfeedonplantandanimalorganisms.2.Howlong,cantheMojaveShrimp