高三英语限时练习十五

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1、高三英语限时练习十五u第.二教;育资O源I网　　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.　　Scientistsalreadyknewthatmicemakeultrason

2、ic(超声波)sounds—noisesthataretoohigh-pitched(高音的)forpeopletohear24specialequipment.　　Tofindoutwhethermiceputsuchsoundstogetherinsong-like25,theresearchersrecordedthesoundsof1mice.Usingcomputer26,theywereabletoseparatethesoundsintospecifictypesofsyllables(音节),andfoundthemiceproducedabout10syllabl

3、espersecond.　　Theresultsshowedthatnearlyallofthemicerepeatedsequences(顺序)ofsyllablesindifferentpatterns.That’senoughtomeetthedefinitionofwhatscientists27song.Butnotallscientistsare28_thatwhatthemicearedoingis29singing.Toproveit,theresearchersmustshowthatthere’slearninginvolved.And,theyneedto__

4、30whythemicesing.　　21.A.almostB.evenC.neverD.usually　　22.A.coincidenceB.evidenceC.guidanceD.instance　　23.A.atonceB.bymeansC.forexampleD.infact　　24.A.duringB.insideC.throughD.without　　25.A.fashionsB.instructionsC.patternsD.styles　　26.A.accessB.printerC.screenD.software　　27.A.callB.hearC.singD.w

5、rite　　28.A.accustomedB.convincedC.involvedD.qualified　　29.A.actuallyB.obviouslyC.simplyD.unlikely　　30.A.figureoutB.getaboutC.runacrossD.talkover　　语法填空（时间：10分钟）　　Earlyinthe16thcenturymenweretryingtoreachAsiabytravelingwestfromEurope.InordertofindAsiatheyhadtofindawaypastSouthAmerica.Themanwhofi

6、nallyfoundthewayfromtheAtlanticOceantothePacificwasFerdinandMagellan.MagellansailedfromSevilleinAugust,1519____31____fiveshipsandabout280men.Fourteenmonthslater,after____32____(spend)thecoldwinteronthecoastofPatagonia,hediscoveredthechannel____33____isnowcalledMagellanStrait(海峡).InNovember,152

7、0,aftermanymonthsofdangersfromrocksandstorms,thethree____34____(remain)shipsenteredtheoceanontheothersideofSouthAmerica.Theythen____35____(continue),hopingtoreachAsia.Buttheydidnotseeanyland____36____theyreachedtheislandsoffthecoastofAs