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1、 Unit4 Earthquakes.阅读理解AMandaraseemedtoknowsomethingbigwasabouttohappen.Sosheletoutayell,caughtholdofhertwo-year-olddaughterKibibiandclimbedupintoatree.ShelivesattheNationalZooinWashingtonD.C.AndonTuesday,August23rd,witnessessaidsheseemedtosensethebigearthquakethatshookmuchoftheEastCoastbeforeanyhum
2、ansknewwhatwasgoingon.Andshesnottheonlyone.Inthemomentsbeforethequake,anorangutan(猩猩)letoutaloudcallandthenclimbedtothetopofhershelter.“Itsverydifferentfromtheirnormalcall,” saidBrandieSmith,thezookeeper. “Thelemurs(monkeylikeanimalsofMadagascar)willsoundanalarmiftheyseeorhearsomethinghighlyunusual.
3、”Butyoucantseeorhearanearthquake15minutesbeforeithappens,canyou?Maybeyoucanifyoureananimal. “Animalscanhearaboveandbelowourrangeofhearing,” saidBrandieSmith. “Thatspartoftheirspecialabilities.Theyremoresensitivetotheenvironment,whichishowtheysurvive.”Primateswerenttheonlyanimalsthatseemedtosensetheq
4、uakebeforeithappened.Oneoftheelephantsmadeawarningsound.Andahugelizard(蜥蜴)ranquicklyforthecover.Theflamingos(akindofbirds)gatheredbeforethequakeandstayedtogetheruntiltheshakingstopped.Sowhatkindofvibrations(震动)weretheanimalspickingupinthemomentsbeforethequake?ScientistSusanHoughsaidearthquakesproduc
5、etwotypesofwavesaweak “P” waveandthenamuchstronger “S” wave.The “P” standsfor “primary”.Andthe “S” standsfor “secondary”.Shethinksthe “P” wavemightbewhatsetstheanimalsoff.Notalltheanimalsbehavedunusuallybeforethequake.Forexample,Smithsaidthezoosgiantpandasdidntjumpupuntiltheshakingactuallybegan.Butm
6、anyoftheotheranimalsseemedtoknowsomethingwascomingbeforeithappened. “Imnotsurprisedatall,” Smithsaid.1.WhydidMandaraactstrangelyoneday?A.Becauseitsensedsomethingunusualwouldhappen.B.BecauseitsdaughterKibibiwasinjured.C.Becauseitheardanorangutanletoutaloudcall.D.Becauseanearthquakehadhappened.2.Accor
7、dingtoBrandieSmith,.A.manyanimalshearingissharpB.earthquakesproducetwotypesofwavesC.primatesusuallygathertogetherbeforeaquakeD.humanscanalsodeveloptheabilitytosenseaquake3.Whichanimalseemsunabletosenseaquake?A.Agiantpanda.B.Aflamingo.C.Alemur.D.Alizard.4.Whatisthebesttitleforthepassage?A.Howanimalss
8、urviveaquakeB.HowanimalsdifferfromhumansC.HowanimalsbehavebeforeaquakeD.HowanimalsprotecttheiryounginaquakeBForthepast45years,MartinandSinforosaColomerhavebeentheonlytworesidentsofLaEstrella,anabandonedvillageinSpain.Itsastrangewaytolive,withoutanyhumancontact,asiftheyrethelasttwopeopleontheEarth.Bu
9、tthetinyvillagewasnotalwaysisolatedlikethis.Itwasoncefilledwithlife,withhundredsofinhabitants,achurch,twoschoolhousesandseveralbars.Accordingtovarioussources,aterriblestormin1883killednearlyhalftheinhabitantsanddestroyedatleast17houses.Thevillagesquareandthechurchremainedunharmed,andamemorialwasbuil
10、tforallthosewhodied.Theplacelostitscharmafterthatandlocalsgraduallybegantoabandontheirhomes.MartinandSinforosasstorybeganabout70yearslater,whentheybecameonepairofthefewyouthsstilllivinginLaEstrella.“Imetheronedaywhenshewasbringingthecattleinfromthefields,” Martinrecalled.“Iwenttothefarmandbroughtthe
11、cattlein,too.” Theylatermetatoneofthetworemainingclubsinthevillage,fellinlove,andmarried.TheColomersraisedafamilyinLaEstrella,choosingtostayevenwhenmanyoftheirfellowvillagersleftforcitiesinsearchofwork.“Some150200peoplelivedherebefore,”Martinsaid.“Wehadteachers,someprofessionals,amayor,asheriff,theu
12、ndertakerandapriest.Inayearortwo,almosteverybodyleft.”“Manypeoplesayhowwellwelive,butIsay,Comeandlivehereforawhileandseehowlongyoucanstandit,” hesaid.“Becausemywifewasborninthisplace,shehasalwaysbeenlivinghere.Shedoesntwanttoleave.Haditbeenuptome,wewouldhaveleftthetownalongtimeago.ButIcantleaveherby
13、herself.Whatelsecanwedo?”5.Whatcanwelearnfromthefirstparagraph?A.PeopleinLaEstrellalivedhappily.B.LaEstrellausedtobeanactivevillage.C.Thecouplehatedlivingwithotherpeople.D.LaEstrellaisntsuitableforpeopletolivein.6.WhatprobablyhappenedtoLaEstrellaaftertheterriblestorm?A.Theresidentsleftthevillageslow
14、ly.B.Peoplebegantorepairthevillage.C.Thevillagesquarewaswellprotected.D.Thememorialremainedingoodcondition.7.WhendidMartinandSinforosaprobablyfallinlovewitheachother?A.In1883.B.In1953.C.In1973.D.In1993.8.WhydidntSinforosaleavethevillage?A.ShecouldntleaveMartinbyhimself.B.Shehadtolookafterherchildren
15、.C.Shedidntdaretoleavebyherself.D.Shehadbeenusedtothevillagelife.语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。Eachyear1.(thousand)oftouristsvisitthepolarregionsoftheArcticandAntarctica.ButtheincreasingnumberofpeopletravellingtotheendsoftheEarthcanhave2.negativeeffectonfragileecosystems(生态系统).Shouldtourists3.
16、(allow)tovisitpolarregions?About40,000touristsvisitAntarcticaeachyear.MorethanfivemilliontraveltotheArcticandsubarcticarea.Transportingtouriststotheregions4.(increase)shipandairplanetraffic,addingtotheriskofpollution,oilspills,andotherenvironmentaldamage.Becausetheplaces5.wildlifeisaccessiblearefewinnumber,to
