通信衛(wèi)星低噪聲放大器在C頻段工作的地球站其工作頻帶為3625/3700MHz到4200MHz，共575/500MHz的工作帶寬。
1、正確正確
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Whattheyare____aboutiswhichcomesfirst:thechickenortheegg?
Whichissafer-stayingathome，travelingtoworkonpublictransport，orworkingintheoffice?Surprisingly，eachofthesecarriesthesamerisk，whichisverylow.However，whataboutflyingcomparedtoworkinginthechemicalindustry?Unfortunately，theformeris65timesriskierthanthelatter!Infact，theaccidentrateofworkersinthechemicalindustryislessthanthatofalmostanyofhumanactivity，andalmostassafeasstayingathome.
Thetroublewiththechemicalindustryisthatwhenthingsgowrongtheyoftencausedeathtothoselivingnearby.Itisthiswhichmakeschemicalaccidentssonewsworthy.Fortunately，theyareextremelyrare.ThemostfamousoneshappenedatTexasCity(1947)，F(xiàn)lixborough(1974)，Seveso(1976)，Pemex(1984)andBhopal(1984)。
Someofthesearealwaysinthemindsofthepeopleeventhoughthelossoflifewassmall.NoonediedatSeveso，andonly28workersatFlixborough.TheworstaccidentofallwasBhopal，whereupto3，000werekilled.TheTexasCityexplosionoffertilizerkilled552.ThePemexfireatastorageplantfornaturalgasinthesuburbsofMexicoCitytook542lives，justamonthbeforetheunfortunateeventatBhopal.
Someexpertshavediscussedtheseaccidentsandusedeachaccidenttoillustrateaparticulardanger.ThustheTexasCityexplosionwascausedbytonsofammoniumnitrate(硝酸銨)，whichissafeunlessstoredingreatquantity.TheFlixboroughfireballwasthefaultofmanagement，whichtookriskstokeepproductiongoingduringessentialrepairs.TheSevesoaccidentshowswhathappensifthelocalauthoritieslackknowledgeofthedangerontheirdoorstep.Whenthepoisonousgasdriftedoverthetown，localleaderswereincapableoftakingeffectiveaction.ThePemexfirewasmadeworsebyanoverloadedsiteinanovercrowdedsuburb.Thefiresetoffachainreactionosexplodingstoragetanks.Yet，byamiracle，thetwolargesttanksdidnotexplode.Hadthesecaughtfire，then3，000strongrescueteamandfirefighterswouldallhavedied.
1.Chemicalaccidentsareusuallyimportantenoughtobereportedasnewsbecause____.
A.theyareveryrare
B.theyoftencauselossoflife
C.theyalwaysoccurinbigcities
D.theyarousetheinterestofallthereaders
2.Whichofthefollowingstatementsistrue?
A.Workingattheofficeissaferthanstayingathome.
B.Traverllingtoworkonpublictransportissaferthanworkingattheoffice.
C.Stayingathomeissaferthanworkinginthechemicalindustry.
D.Workinginthechemicalindustryissaferthantravelingbyair.
3.Accordingtopassage，thechemicalaccidentthatcausedbythefaultofmanagementhappenedat____.
A.TexascityB.FlixboroughC.SevesoD.MexicoCity
4.Fromthediscussionamongsomeexpertswemaycocludethat____.
A.toavoidanyaccidentsweshouldnotrepairthefacilitiesinchemicalindustry
B.thelocalauthoritiesshouldnotbeconcernedwiththeproductionofthechemicalindustry
C.alltheseaccidentscouldhavebeenavoidedorcontrolledifeffectivemeasurehadbeentaken
D.naturalgasstoredinverylargetanksisalwayssafe
5.Fromthepassageweknowthatammoniumnitrateisakindof____.
A.naturalgas，whichcaneasilycatchfire
B.fertilizer，whichcan'tbestoredinagreatquantity
C.poisonoussubstance，whichcan'tbeusedinovercrowdedareas
D.fuel，whichisstoredinlargetanks
____youwerebusy,Iwouldn’thavebotheredyouwithquestions.
初產(chǎn)婦第二產(chǎn)程不能超過
Peoplewithdisabilitiescomprisealargepartofthepopulation.Itisestimatedthatover35millionAmericanshavephysical,mental,orotherdisabilities.Abouthalfofthesedisabilitiesare“developmental”,i.e.,theyoccurpriortotheindividual’stwenty-secondbirthday,oftenformgeneticconditions,andaresevereenoughtoeffectthreeormoreareasofdevelopment,suchasmobility,communication,employment,etc.Mostotherdisabilitiesareconsidered“adventitious”,i.e.,accidentalorcausedbyoutsideforces.
Priortothe20thcentury,onlyasmallpercentageofpeoplewithdisabilitiessurvivedforlong.Medicaltreatmentforthesedisabilitieswasunavailable.Advancementsinmedicineandsocialserviceshavecreatedaclimateinwhichpeoplewithdisabilitiescanexperttohavesuchbasicneedsasfood,shelter,andmedicaltreatment.Unfortunately,thesebasicareoftennotavailable.Civillibertiessuchastherighttovote,marry,getaneducation,andagainemploymenthavehistoricallybeendeniedonthebasicofdisability.
Inrecentdecades,thedisabilityrightsmovementhasbeenorganizedtoflightagainsttheseinfringements(侵害)ofcivilrights.Congressrespondedbypassingmajorlegislationrecognizingpeoplewithdisabilitiesasprotectedclassundercivilrightsstatutes.
Stilltoday,peoplewithdisabilitiesmustfighttolivetheirlivesindependently.ItisestimatedthatmorethanhalfofqualifiedAmericanswithdisabilitiesareunemployed,andamajorityofthosewhodoworkareunderemployed.Abouttwo-thirdsliveatorbelowtheofficialpovertylevel.
Significantbarriers,especiallyintransportationandpublicawareness,preventdisabledpeoplefromtakingpartinsociety.Forexample,whilenolongerprohibitedbylawfrommarrying,apersonwithnoaccesstotransportationiseffectivelyexcludedfromcommunityandsocialactivitieswhichmightleadtothedevelopmentoflong-termrelationships.
Itwillonlybewhenpublicattitudesadvanceasfaraslawsarethatdisabledpeoplewillbefullyabletotaketotheirrightplaceinsociety.
16.”developmental”disability.
A.developsveryslowlyovertimeB.iscausedforces
C.occursinyouthandaffectsdevelopmentD.isgettingmoreandmoresevere
17.Mostdisabledpeopleusedtodieearlybecause.
A.disabilitiesdestroyedmajorbodilyfunctionsB.theywerenotverywelllookedafter
C.medicaltechniqueswerenotavailableD.theyweretoopoortogetpropertreatment
18.Intheauthor’sopinion,toenablethedisabledpeopletotaketheirrightfulplaceinsociety,.
A.morelawsshouldbepassedB.publicattitudesshouldbechanged
C.governmentshouldprovidemoreaidsD.morepublicfacilitiesshouldbeactup
19.Whichofthefollowingcannotbeinferredfromthepassage?
A.Manydisabledpeoplemayremainsinglefortheirwholelife.
B.Thepublictendstolookdownuponthedisabledpeople.
C.Thedisabledpeoplefeelinferiortothosesurroundingthem.
D.Discriminatory(有差別的)lawspreventthedisabledfrommixingwithothers.
20.Thebesttitleforthispassagemightbe.
A.HandicapsofPeoplewithDisabilitiesB.TheDifficultiesoftheDisabled
C.TheCausesforDisabilitiesD.MedicalTreatmentsforDisabilities
PartIIVocabularyandStructure(共40小題，每小題1分，共40分)
Directions:Inthisparttherearefortyincompletesentences.Eachsentenceisfollowedbyfourchoices.ChoosetheonethatbestcompletesthesentenceandthenmarkyouranswerontheAnswerSheet.
21.It’sstillearlyinthemorning.Thereisn’tintheoffice.
A.anyoneB.everyoneC.nobodyD.anypeople
22.isnotknownwhattheydiscussedinthemeeting.
A.ThatB.HeC.ThisD.It
23.Yhesadnewsbrokeherandshehasbeengloomyeversince.
A.feelingsB.emotionsC.mindD.heart
24.Heismuchofagentlemantofight.
A.soB.asC.veryD.too
25.Notuntilthistermtorealizehowimportantthissubjectistohisfuturecareerasadiplomat.
A.hebeganB.hahasbegunC.didhebeginD.thathahasbegun
26.whowouldliketogoonthetripshouldputtheirnamesonthelist.
A.ThoseB.TheseC.SomebodyD.Theones
27.Abottleweighslessafterairistakenout,provesthatairhasweight.
A.weB.itC.whichD.what
28.Howlong?
A.yousupposediditlastB.doyousupposeitlasted
C.didyousupposeitlastD.yousupposeitlasted
29.Smmithhadsometroubletheman’saccent.
A.tounderstandB.understandingC.forunderstandingD.withunderstanding
30.Thenextfewdayscouldbeforthepeacenegotiation.
A.maximumB.practicalC.criticalD.urgent
31.Hequitealotwhenhewasyoung.
A.usedtotravelB.usedtotravelingC.wasusedtotravelD.wouldusedtotravel
32.Youmeyourtelephonenumberincasesomeonewantstocontactyou.
A.hadbettergiveB.hadbettergivenC.hadbettertogiveD.hadbettergave
33.MaryusedtotheroomwithLinda.
A.separateB.divideC.holdD.share
34.—Mustwehandinourexercise-booksnow?
—No,you.
A.mustn’tB.don’tC.needn’tD.can’t
35.Shepulledawayfromthewindowanyoneshouldseethem.
A.lestB.eventhoughC.unlessD.onlyif
36.Notahasbeenfoundsofarthatcanhelpthepolicefindthecriminal.
A.factB.clueC.symbolD.sign
37.Shewouldmakeateacherfarsuperiortheaverage.
A.overB.thanC.beyondD.to
38.Radioisdifferentfromtelevisioninitsendsandreceivespictures.
A.whichB.thatC.whatD.this
39.Tomandjackhavereturnedbutstudentsofthegrouphaven’tcomebackyet.
A.otherB.theothersC.othersD.another
40.Ithalfayearsincewetostudyinthisuniversity.
A.is;comeB.is;havecome
C.hasbeen;cameD.hasbeen;havecome
41.Thefactthatsomethingischeapdoesn’tmeanitisoflowquality.
A.necessarilyB.especiallyC.essentiallyD.practically
42.Theysetoffbycarandthenearesttown.
A.madeforB.madeafterC.madeoutD.madeto
43.Takethisbaggageandyoucanfindenoughroom.
A.putitwhichB.putitinwhich
C.putitatwhereD.putitwherever
44.Hedoesn’twantthathe’sgoingaway.
A..tobeknownB.himtobeknown
C.thattobeknownD.ittobeknown
45.Thenoisearoundwasterrible,butIhadtoit.
A.keepawayfromB.keepupwithC.livewithD.liveon
46.Hethathisguestswerebored,althoughtheywerelisteningpolitely.
A.impressedB.sensedC.inferredD.identified
47.OnSundaysIpreferathometoout.
A.tosay;goB.stay;goingC.staying;goingD.staying;go
48.I’dliketowritetohim,butwhat’sthe?Heneverwritesback.
A.significanceB.businessC.pointD.purpose
49.Therewereopinionsastothebestlocationforthenewschool.
A.disagreeingB.conflictingC.rejectingD.reverting
50.bythenewsofhisfather’sdeath,hecouldhardlyutteraword.
A.TobestunnedB.StunnedC.TostunD.Stunning
51.,we’dbettermakesomechangesintheplan.
A.ThatisthecaseB.Thatbeenthecase
C.ThattobethecaseD.Thatbeingthecase
52.Theyhaveequippedtheofficewiththebusinessmachines.
A.lastB.latterC.latestD.later
53.ThepolicefoundthatGeorgehadstillanotherofincome.
A.originB.sourceC.basisD.means
54.Anopen-mindedteacherdoesn’talwaysonesingleteachingmethod.
A.setasideB.takeoverC.takeonD.stickto
55.Muchtothestudent’s,theexamwaspostponed.
A.burdenB.concernC.reliefD.requirement
56.Childrennormallyfeelalotofabouttheirfirstdayatschool.
A.anxietyB.differenceC.feelingsD.trouble
57.Theweatherwashotthatshedecidedtohavethebarberherhairstyle.
A.rather;tochangeB.so;change
C.muchtoo;changeD.too;changed
58.Shemeetherformerinstructoronthebus.
A.delightedtoB.happenedtoC.pleasedtoD.tendedto
59.Justasnotwowordsaretrulysynonymousnotwodifferentexpressionscanmeanexactlythesamething.
A.ratherB.alsoC.yetD.so
60.Thenewengineer’ssuggestionswereintherevisedplan.
A.entitledB.engagedC.embodiedD.estimated
