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1、高三英语限时练习十五完形填空（时间：10分钟）Forsomepeople,thesightofamousecanbereasontoscream.Forothermice,thesamesightcanbereasontosing.Micewillprobably21singtheirwaytoanyconcert,butresearchersintheUnitedStateshavefound22thatmicedo,23,sing.Scientistsalreadyknewthatmicemakeultrasonic(超声波)sounds
2、—noisesthataretoohigh-pitched(高音的)forpeopletohear24specialequipment.Tofindoutwhethermiceputsuchsoundstogetherinsong-like25,theresearchersrecordedthesoundsof1mice.Usingcomputer26,theywereabletoseparatethesoundsintospecifictypesofsyllables(音节),andfoundthemiceproducedabout10sy
3、llablespersecond.Theresultsshowedthatnearlyallofthemicerepeatedsequences(顺序)ofsyllablesindifferentpatterns.That’senoughtomeetthedefinitionofwhatscientists27song.Butnotallscientistsare28_thatwhatthemicearedoingis29singing.Toproveit,theresearchersmustshowthatthere’slearningin
4、volved.And,theyneedto__30whythemicesing.21.A.almostB.evenC.neverD.usually22.A.coincidenceB.evidenceC.guidanceD.instance23.A.atonceB.bymeansC.forexampleD.infact24.A.duringB.insideC.throughD.without25.A.fashionsB.instructionsC.patternsD.styles26.A.accessB.printerC.screenD.sof
5、tware27.A.callB.hearC.singD.write28.A.accustomedB.convincedC.involvedD.qualified29.A.actuallyB.obviouslyC.simplyD.unlikely30.A.figureoutB.getaboutC.runacrossD.talkover语法填空（时间：10分钟）Earlyinthe16thcenturymenweretryingtoreachAsiabytravelingwestfromEurope.InordertofindAsiatheyha
6、dtofindawaypastSouthAmerica.ThemanwhofinallyfoundthewayfromtheAtlanticOceantothePacificwasFerdinandMagellan.MagellansailedfromSevilleinAugust,1519____31____fiveshipsandabout280men.Fourteenmonthslater,after____32____(spend)thecoldwinteronthecoastofPatagonia,hediscoveredthech
7、annel____33____isnowcalledMagellanStrait(海峡).InNovember,15aftermanymonthsofdangersfromrocksandstorms,thethree____34____(remain)shipsenteredtheoceanontheothersideofSouthAmerica.Theythen____35____(continue),hopingtoreachAsia.Buttheydidnotseeanyland____36____theyreachedtheisla
8、ndsoffthecoastofAsia.Beforetheyarrivedattheseislands,laterknown____37____thePhilip
