Recentresearchhasclaimedthatanexcessofpositiveionsintheaircanhaveanilleffectonpeople’sphysicalorpsychologicalhealth.Whatarepositiveions?Well,theairisfullofions,electricallychargedparticles,andgenerallythereisaroughbalancebetweenthepositiveandthenegativecharged.Butsometimesthisbalancebecomesdisturbedandalargerproportionofpositiveionsarefound.Thishappensnaturallybeforethunderstorm,earthquakeswhenwindssuchastheMistral,HamsinorSharavareblowingincertaincountries.Oritcanbecausedbyabuild-upofstaticelectricityindoorsfromcarpetsorclothingmadeofman-madefibres,orfromTVsets,duplicatorsorcomputerdisplayscreens.
Whenalargenumberofpositiveionsarepresentintheairmanypeopleexperienceunpleasanteffectssuchasheadaches,fatigue,irritability,andsomesensitivepeoplesuffernauseaorevenmentaldisturbance.Animalsarealsoaffected,particularlybeforeearthquakes,snakeshavebeenobservedtocomeoutofhibernation,ratstofleefromtheirburrows,dogshowlandcatsjumpaboutunaccountably.ThishasledtheUSGeographicalSurveytofundanetworkofvolunteerstowatchanimalsinanefforttoforeseesuchdisastersbeforetheyhitvulnerableareassuchasCalifornia.
Conversely,whenlargenumbersofnegativeionsarepresent,thenpeoplehaveafeelingofwell-being.Naturalconditionsthatproducetheselargeamountsarenearthesea,closetowaterfallsorfountains,orinanyplacewherewaterissprayed,orformsaspray.Thisprobablyaccountsforthebeneficialeffectofaholidaybythesea,orinthemountainswithtumblingstreamsorwaterfalls.
Toincreasethesupplyofnegativeionsindoors,somescientistsrecommendtheuseofionisers:smallportablemachines,whichgeneratenegativeions.Theyclaimthationisersnotonlycleanandrefreshtheairbutalsoimprovethehealthofpeoplesensitivetoexcesspositiveions.Ofcourse,therearethedetractors,otherscientists,whodismisssuchclaimsandareskepticalaboutnegative/positiveionresearch.Thereforepeoplecanonlymakeuptheirownmindsbyobservingtheeffectsonthemselves,oronothers,ofanegativerichorpoorenvironment.Afterallitisdebatablewhetherdependingonseismicreadingstoanticipateearthquakesismoreeffectivethanwatchingthecat.
1.Whateffectdoesexceedingpositiveionizationhaveonsomepeople?
A.Theythinktheyareinsane.
B.Theyfeelratherbad-temperedandshort-fussed.
C.Theybecomeviolentlysick.
D.Theyaretootiredtodoanything.
2.Inaccordancewiththepassage,staticelectricitycanbecausedby___.
A.usinghome-madeelectricalgoods.
B.wearingclothesmadeofnaturalmaterials.
C.walkingonartificialfloorcoverings.
D.copyingTVprogramsonacomputer.
3.Ahighnegativeioncountislikelytobefound___.
A.nearapoundwithawaterpump.
B.closetoaslow-flowingriver.
C.highinsomebarrenmountains.
D.byarotatingwatersprinkler.
4.Whatkindofmachinecangeneratenegativeionsindoors?
A.Ionisers.
B.Air-conditioners.
C.Exhaust-fans
D.Vacuumpumps.
5.Somescientistsbelievethat___.
A.watchinganimalstoanticipateearthquakesismoreeffectivethandependingonseismography.
B.theunusualbehaviorofanimalscannotbetrusted.
C.neitherwatchingnorusingseismographsisreliable.
D.earthquake
BCDAA
暂无解析
Thematterisnottobe____.
PartIIVocabularyandStructure
Directions:Inthisparttherearefortyincompletesentences.Eachsentenceisfollowedbyfourchoices.ChoosetheonethatbestcompletesthesentenceandthenmarkyouranswerontheAnswerSheet.
21.Agreatmanycancerscanbecuredbutonlyifbeforetheyhavebeguntospreadorcolonizeinotherpartsofthebody.
A.properlytreat
B.properlytreating
C.beingproperlytreated
D.properlytreated
22.sheisalikeablegirl,sheisverydifficulttoworkwith.
A.SinceB.HoweverC.AsfarasD.While
23.Allthetouristsgavetherobbertheirmoney.
A.frightenedB.frighteningC.frightenD.frightful
24.herage,shereallydidagoodjobinsuchashorttime.
A.GivingB.GivesC.GiveD.Given
25.Thesoldierwaswithneglectinghisduty.
A.chargedB.conductedC.chargedD.committed
26.Thereasonwhythecarstoppedwas.
A.becausetheroadwasnotgoodB.thattheroadwasnotgood
C.duetothebadroadD.becauseofthebadroad
27.You’dbetterhurry,youmightbelateforclass.
A.orB.andC.unlessD.but
28.,heperformedthetaskwithsuccess.
A.ItwasexpectedB.Whichwasexpected
C.AswasexpectedD.Thatwasexpected
29.ThedoctorfeltJohn’sarmtoifthebonewasbroken.
A.workoutB.findoutC.lookatD.seeout
30.Hejustmysuggestionatthemeetingyesterday.
A.putawayB.shutdownC.showedoffD.brushedaside
31.Thequestionatthenextmeetingremainasecret.
A.discussedB.todiscussC.tobediscussedD.beingdiscussed
32.Hislazinesshisfailureinthefinalexam.
A.gaveupB.contributedC.resultedinD.distributed
33.Theteacher’stomystatementaboutthispoetledmetoreadwidelyaboutpoems.
A.changeB.chargeC.challengeD.chance
34.Onmostofthenights,Janereadinglettersfromherboyfriend.
A.stayedoffB.stayedonC.stayedoutD.stayedup
35.Thefirst-yearstudentswerelearningformthearmyinMiyun,asuburbofBeijingnearIlived.
A.whatB.whereC.thatD.which
36.Lyndaandhundredsofyoungpeoplelikehimthepostoftypist.
A.approachedB.appliedforC.appealedtoD.approvedof
37.Anybodyisentitledtosuchbenefitofageorsex.
A.regardlessB.whetherC.inspiteD.incase
38.Inthisbuildingeachapartmentcouldafamilyofsix.
A.houseB.coverC.makeD.include
39.Itriedtogetoutofthebusiness,Ifoundimpossible.
A.whoB.whichC.thatD.what
40.Whenheexplaineditagainandagain,thestudent’spatience.
A.ranoverB.ranonC.ranoutD.ranoff
41.WhenherneighborGrandmaWangbecameill,thegirloften.
A.fittedinB.workedoutC.heldbackD.helpedout
42.Ifyoureallywanttoapplyforthedangerousjob,Iwon’t,thoughtIthinkit’sacrazyidea.
A.stoodinyourwayB.standontheway
C.standinyourwayD.standbytheway
43.Hewastryingtoread;,thephonekeptringing.
A.meanwhileB.thenC.laterD.afterwards
44.Iamoutofthosepeoplewholikeastrenuous(费力的)holiday;Ibelievein.
A.tookiteasyB.takeniteasy
C.takingiteasyD.takingiteasily
45.Thepolicematchedthefingerprintsandfoundtheywere.
A.equivalentB.identicalC.similarD.equal
46.Formally,intheUnitedStates,manynursesworkedasprivatedutynursesinhospitals.
A.otherthanB.morethanC.lessthanD.ratherthan
47.Ifyoudon’tmind.Idomyhomeworkthanplaycardswithyou.
A.hadbetterB.preferC.wouldratherD.wouldlike
48.Theirideawastogetustothestrikeatonce.
A.callatB.calloffC.callinD.callfor
49.MycarsoIhadtocomebybus.
A.felldownB.brokedownC.felloverD.turnedaway
50.Icouldtellhewassurprisedfromtheonhisface.
A.appearanceB.sightC.expressionD.explanation
51.Whichis,NorthAmericaorSouthAmerica?
A.biggestB.thebiggestC.morebiggestD.bigger
52.Youshouldobservecarefullyhowtheaudiencehisspeech.
A.reachtoB.refertoC.reacttoD.relateto
53.Thesefarmersgotagoodharvestlastyear,sotheyabigsumofmoneyfornewfarmmachines.
A.setasideB.setaboutC.setupD.setback
54.Oneofmysayingsis“wherethereisawill,thereisaway.”
A.likelyB.favorableC.alikeD.favorite
55.Allisacontinuoussupplyoffueloil.
A.whatisneededB.thatisneeded
C.thethingisneededD.fortheirneeds
56.Thehighincometaxisharmfulitmaydiscouragepeoplefromtryingtoearnmore.
A.inthatB.thatC.inwhichD.which
57.Anewtechniqueout,theyieldincreasesby20%.
A.havingworkingB.havingbeenworked
C.atalossD.forgood
58.Thebirdflewintotheairandwassoon.
A.outofsightB.inahurryC.atalossD.forgood
59.ItisdecidedthatheforabustomeettheguestsfromBeijing.
A.callB.callsC.arrangeD.arranges
60.Iknowit’snotimportantbutIcan’thelpaboutit.
A.tothinkB.thinkingC.andthinkD.beingthought
ThediscoveryoftheAntarcticnotonlyprovedoneofthemostinterestingofallgeographicaladventures,butcreatedwhatmightbecalled“theheroicageofAntarcticexploration”.Bytheirtremendousheroism,mensuchasShakleton,Scott,andAmundsencausedanewcontinenttoemergefromtheshadows,andyetthatheroicage,littlemorethanacenturyold,isalreadypassing.Modernscienceandinventionsarerevolutionizingtheendurance,futurejourneysintotheseicywasteswillprobablydependonmotorvehiclesequippedwithcaterpillartractionratherthanonthedogsthatearlierdiscoverersfoundsoinvaluableandhardlycomparable.
FewrealizethatthisAntarcticcontinentisalmostequalinsizetoSouthAmerica,andenormousfieldofworkawaitsgeographersandprospectors.Thecoastsofthiscontinentremaintobeaccuratelycharted,andthemapingofthewholeoftheinteriorpresentsaformidabletasktothecartographerswhoundertakethework.Oncetheirlaborsarecompleted,itwillbepossibletoprospectthevastnaturalresourceswhichscientistsbelievewillfurnishoneofthelargesttreasurehoardsofmetalsandmineralstheworldhasyetknown,andalmostinexhaustiblesourcesofcopper,coal,uranium,andmanyotheroreswillbecomeavailabletoman.SuchdiscoverieswillusherinaneraofpracticalexploitationoftheAntarcticwastes.
Thepolardarknesswhichhidesthiscontinentforthesixwintermonthswillbedefeatedbyhugebatteriesoflight,andmakepossibletheestablishingofair-fieldsforthefutureinter-continentalairservicesbymakingtheseareasaslightasday.Presentflyingrouteswillbecompletelychanged,fortheAntarcticrefuelingbaseswillmakeflightsfromAustraliatoSouthAmericacomparativelyeasyoverthe5,000milesjourney.
Theclimateisnotlikelytoofferaninsuperableproblem,fortheexplorerAdmiralByrdhasshownthattheclimateispossibleevenformencompletelyuntrainedforexpeditionsintothosefrozenwastes.Someofhispartiesweremenwhohadneverseensnowbefore,andyetherecordsthattheysurvivedtherigorsoftheAntarcticclimatecomfortably,sothat,providedthattheappropriateinstallationsaremade,wemayassumethathumanbeingsfromallcountriescouldlivetheresafely.Byrdevenaffirmsthatitisprobablythemosthealthyclimateintheworld,fortheintensecoldofthousandsofyearshassterilizethiscontinent,andrendereditabsolutelygermfree,withtheconsequencesthatordinaryandextraordinarysicknessanddiseasesfromwhichmansuffersinotherzoneswithdifferentclimatesarehereutterlyunknown.Thereexistnoproblemsofconservationandpreservationoffoodsupplies,forthelatterkeepindefinitelywithoutanysignsofdeterioration;itmayevenbethatlatergenerationswillcometoregardtheAntarcticasthenaturalstorehouseforthewholeworld.
Plansarealreadyonfoottosetuppermanentbasesontheshoresofthiscontinent,andwhatsofewyearsagowasregardedasa“deadcontinent”nowpromisestobeamostactivecenterofhumanlifeandendeavor.
1.WhendidmanbegintoexploretheAntarctic?
A.About100yearsago.
B.Inthiscentury.
C.Atthebeginningofthe19thcentury.
D.In1798.
2.Whatmusttheexplorersbe,eventhoughtheyhavemodernequipmentandtechniques?
A.Braveandtough
B.Stubbornandarrogant.
C.Well-likedandhumorous.
D.Stoutandsmart.
3.Themosthealthyclimateintheworldis___.
A.inSouthAmerica.
B.intheArcticRegion.
C.intheAntarcticContinent.
D.intheAtlanticOcean.
4.WhatkindofmetalsandmineralscanwefindintheAntarctic?
A.Magnetite,coalandores.
B.Copper,coalanduranium.
C.Silver,naturalgasanduranium.
D.Aluminum,copperandnaturalgas.
5.Whatisplannedforthecontinent?
A.Buildingdamsalongthecoasts.
B.Settingupseveralsummerresortsalongthecoasts.
C.Mappingthecoastandwholeterritory.
D.Settinguppermanentbasesonthecoasts.
Whyaretoday'soldermiddle-agedandelderlybecomingthenewwinners?
Letchildrenlearntojudgetheirownwork.Achildlearningtotalkdoesnotlearnbybeingcorrectedallthetime;ifcorrectedtoomuch,hewillstoptalking.Henoticesathousandtimesadaythedifferencebetweenthelanguagesheusesandthelanguagethosearoundhimuse.Bitbybit,hemakesthenecessarychangestomakehislanguagelikeotherpeople.Inthesameway,whenchildrenlearntodoalltheotherthingstheylearntodowithoutbeingtaught-towalk,run,climb,whistle,rideabicycle-comparethoseperformanceswiththoseofmoreskilledpeople,andslowlymaketheneededchanges.Butinschoolwenevergiveachildachancetofindouthisownmistakesforhimself,letalonecorrectthem.Wedoitallforhim.Weactasifwethoughtthathewouldnevernoticeamistakeunlessitwaspointedouttohim,orcorrectitunlesshewasmadeto.Soonhebecomesdependentontheteacher.Lethimdoithimself.Lethimworkout,withthehelpofotherchildrenifhewantsit,whatthiswordsays,whatansweristothatproblem,whetherthisisagoodwayofsayingordoingthisornot.
Ifitisamatterofrightanswers,asitmaybeinmathematicsorscience,givehimtheanswerbook.Lethimcorrecthisownpapers.Whyshouldweteacherswastetimeonsuchroutinework?Ourjobshouldbetohelpthechildwhenhetellsusthathecan’tfindthewaytogettherightanswer.Let’sendthisnonsenseofgrades,exams,marks,Letusthrowthemallout,andletthechildrenlearnwhatalleducatedpersonsmustsomedaylearn,howtomeasuretheirownunderstanding,howtoknowwhattheyknowordonotknow.
Letthemgetonwiththisjobinthewaythatseemssensibletothem.Withourhelpasschoolteachersiftheyaskforit.Theideathatthereisabodyofknowledgetobelearntatschoolandusedfortherestofone’slifeisnonsenseinaworldascomplicatedandrapidlychangingasours.Anxiousparentsandteacherssay,“Butsupposetheyfailtolearnsomethingessentialtheywillneedtogetintheworld?”Don’tworry!Ifitisessential,theywillgooutintotheworldandlearnit.
1.Whatdoestheauthorthinkisthebestwayforchildrentolearnthings?
A.bycopyingwhatotherpeopledo.
B.bymakingmistakesandhavingthemcorrected.
C.bylisteningtoexplanationsfromskilledpeople.
D.byaskingagreatmanyquestions.
2.Whatdoestheauthorthinkteachersdowhichtheyshouldnotdo?
A.Theygivechildrencorrectanswers.
B.Theypointoutchildren’smistakestothem.
C.Theyallowchildrentomarktheirownwork.
D.Theyencouragechildrentomarktocopyfromoneanother.
3.Thepassagesuggeststhatlearningtospeakandlearningtorideabicycleare___.
A.notreallyimportantskills.
B.moreimportantthanotherskills.
C.basicallydifferentfromlearningadultskills.
D.basicallythesameaslearningotherskills.
4.Exams,grades,andmarksshouldbeabolishedbecausechildren’sprogressshouldonlybeestimatedby___.
A.educatedpersons.
B.thechildrenthemselves.
C.teachers.
D.parents.
5.Theauthorfearsthatchildrenwillgrowupintoadultswhilebeing___.
A.tooindependentofothers.
B.toocriticalofthemselves.
C.incapabletothinkforthemselves.
D.incapabletousebasicskills.
