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Her father was a quiet man with (graceful) manners.
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Herfatherwasaquietmanwithgracefulmanners．
polite
similar
usual
bad
MaryCochranwasoutoftheroomswhereshelivedwithherfat
Thenextdayshe______herfatherwhat_______whenthemanc
told; happened
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told; had happened
Herfatherwasaquietmanwith{{U}}graceful{{/U}}manner
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Onceuponatimetherewasagreatmanwhomarriedthewomanof
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The young woman in the wagon was Abe’s new mother.
The man in the wagon was Abe’s new father.
The little boy was the young woman’s new son.
The little boy running out of the cabin was Ab
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MaryCochranwentoutoftheroomswhereshelivedwithherfa
Herfatherwasaquietmanwithgracefulmanners.
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Idon’tbelieveyou.It’snotlikeherfatherwhoisanhonest
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Herfatherwasaquietmanwithgracefulmanners．
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Thestorygoesthatsometimeagoamanhadaverylovelylittl
Herfatherwasaquietmanwith{{U}}graceful{{/U}}manner
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Agreatmanmarriedawomanandtheyhadalittlelovelygirl.
HuaMulanwasabravegirlintheNorthernWeidynasty.Shedi
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YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
A.FeaturesandapplicationsB.DisplayanddataconnectionC.OnlinestoresD.DifferencesfromiPhoneE.BusinessusageF.OperatingsystemParagraph4______
SomePeopleDoNotTasteSaltlikeOthersLow-saltfoodsmaybeharderforsomepeopletolikethanothersaccordingtoastudybyaPennStateCollegeofAgriculturalSciencesfoodscientist.Theresearchindicatesthatgeneticfactorsinfluencesomeofthedifferenceinthelevelsofsaltweliketoeat.Thoseconclusionsareimportantbecauserecentwell-publicized大力宣传的effortstoreducethesaltcontentinfoodhaveleftmanypeoplestrugglingtoacceptfoodthatsimplydoesnottasteasgoodtothemasitdoestootherspointedoutJohnHayesleadinvestigatoronthestudy.Dietshighinsaltcanincreasetheriskofhighbloodpressureandstroke.Thatiswhypublichealthexpertsandfoodcompaniesareworkingtogetheronwaystohelpconsumerslowersaltintakethroughfoodsthatareenjoyabletoeat.Thisstudyincreasesunderstandingofsaltpreferenceandconsumption.Theresearchinvolved87carefullyscreenedparticipantswhosampledsaltyfoodssuchassoupandchipsonmultipleoccasionsspreadoutoverweeks.Testsubjectswere45menand42womenreportedlyhealthyranginginagefrom20to40.Theyratedtheintensityoftasteonacommonlyusedscientificscalerangingfrombarelydetectabletostrongestsensationofanykind.Mostofuslikethetasteofsalt.HoweversomeindividualseatmoresaltbothbecausetheylikethetasteofsaltinessmoreandalsobecauseitisneededtoblockotherunpleasanttastesinfoodsaidHayes.Supertasterspeoplewhoexperiencetastesmoreintenselyconsumemoresaltthannontasters.Snackfoodshavesaltinessastheirprimaryflavorandatleastforthesefoodsmoreisbettersothesupertastersseemtolikethemmore.HoweversupertastersalsoneedhigherlevelsofsalttoblockunpleasantbittertastesinfoodssuchascheeseHayesnoted.Forexamplecheeseisawonderfulblendofdairyflavorsfromfermented发酵地milkbutalsobittertastesfromripeningthatareblockedbysalthesaid.Asupertasterfindslow-saltcheeseunpleasantbecausethebitternessistoopronounced.Hayescitedresearchdonemorethan75yearsagobyachemistnamedFoxandageneticistnamedBlakesleeshowingthatindividualsdifferintheirabilitytotastecertainchemicals.AsaresultHayesexplainedweknowthatawiderangeintasteacuity敏锐existsandthisvariationisasnormalasvariationsineyeandhaircolor.Supertasterspreferhigh-saltcheesebecause
A.FeaturesandapplicationsB.DisplayanddataconnectionC.OnlinestoresD.DifferencesfromiPhoneE.BusinessusageF.OperatingsystemParagraph2______
Thehigh-speedtrainscanhaveamajorimpactonourlives.
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
CalculatingCrimeWhenyouthinkaboutmathyouprobablydon’tthinkaboutbreakingthelawsolvingmysteriesorfindingcriminals.ButamathematicianinMarylanddoesandhehascomeupwithmathematicaltoolstohelppolicefindcriminals.Peoplewhosolvecrimeslookforpatternsthatmightrevealtheidentityofthecriminal.It’slongbeenbelievedforexamplethatcriminalswillbreakthelawclosertowheretheylive.simplybecauseit’seasiertogetaroundinone’sownneighborhood.Ifpoliceseeapatternofrobberiesinacertainareatheymaylookforasuspectwholivesnearthecrimescenes.Sothefartherawayfromtheareaacrimetakesplacethelesslikelyitisthatthesamecriminaldidit.ButMikeO’LearyamathematicianatTowsonUniversityinMarylandsaysthatthiskindofapproachmaybetoosimple.Hesaysthatpolicemaygetbettercluestothelocationofanoffender’shomebasebycombiningthesepatternswithacity’slayoutandhistoricalcrimerecords.Therecordsofpastcrimescontaingeographicalinformationandcanrevealeasytargets--thatisthekindofstoresthatmightbelessdifficulttorob.Becausethesestoresarealongroadsthelocationsofpastcrimescontaininformationaboutwheremajorstreetsandintersections十字路口are.O’Learyiswritinganewcomputerprogramthatwillquicklyprovidethiskindofinformationforagivencity.Hisprogramalsoincludesinformationaboutthepeoplewholiveinthecityandinformationabouthowacriminal’spatternschangewithage.It’sbeenshownforexamplethattheyoungerthecriminaltheclosertohomethecrime.OthercomputerprogrammershaveworkedonsimilarsoftwarebutO’Leary’susesmoremath.Themathematicianplanstomakehiscomputerprogramavailablefreeofchargetopolicedepartmentsaroundthecountry.Theprogramisjustonewaytousemathtofightcrime.O’Learysaysthatcriminology--thestudyofcrimeandcriminalscontainsalotofgoodmathproblems.IfeellikeI’minagoldmineandI’mtheonlyone.whoknowswhatgoldlookslike.hesays.It’salotoffun./ItcanbeinferredfromthelastparagraphthatO’Leary
Mt.DesertIslandThecoastoftheStateofMaineisoneofthemostirregularintheworld.Astraightlinerunningfromthesouthernmostcoastalcitytothenorthernmostcoastalcitywouldmeasureabout225miles.Ifyoufollowedthecoastlinebetweenthesepointsyouwouldtravelmorethantentimesasfar.Thisirregularityistheresultofwhatiscalledadrownedcoastline.______46AtthattimethewholeareathatisnowMainewaspartofamountainrangethattoweredabovethesea.Astheglacier冰川descendedhoweveritexpendedenormousforceonthosemountainsandtheysankintothesea.Astbemountainssankoceanwaterchargedoverthelowestpartsoftheremaininglandformingaseriesoftwistinginletsandlagoons咸水湖.Thehighestpartsoftheformermountainrangenearesttheshoreremainedasislands.______47Marinefossilsfoundherewere225feetabovesealevelindicatingtheleveloftheshorelinepriortotheglacier.The2.500-milelongrockycoastlineofMainekeepswatchovernearlytwothousandislands.Manyoftheseislandsaretinyanduninhabitedbutmanyarehomelothrivingcommunities.Mt.DesertIslandisoneofthelargestmostbeautifuloftheMainecoastislands.Measuring16milesby12milesMt.Desertwasessentiallyformedastwodistinctislands.______48ForyearsMt.DesertIsland.particularlyitsmajorsettlementBarHarboraffordedsummerhomesforthewealthy.RecentlythoughBarHarborhasbecomearapidlygrowingartscommunityaswell.ButthebestpartoftheislandistheunspoiledforestlandknownasAcadiaNationalPark.Becausetheislandsitsontheboundarylinebetweenthetemperate温带andsub-Arcticzonestheislandsupportstheplantsandanimalsofbothzonesaswellasbeachinlandandalpine高山的plants.______49TheestablishmentofAcadiaNationalParkin1916meansthatthisnaturalreservewillbeperpetuallyavailabletoallpeoplenotjustthewealthy.VisitorstoAcadiamayreceivenatureinstructionfromtheparknaturalistsaswellasenjoycampingcyclingandboating.OrtheymaychoosetospendtimeatthearcheologicalmuseumlearningabouttheStoneAgeinhabitantsoftheisland.ThebestviewonMt.DesertIslandisfromthetopofCadillacMountain.______50FromthesummityoucangazebacktowardthemainlandoroutovertheAtlanticOceanandcontemplatethebeautycreatedbyaretreatingglacier.A.Thismountainrises1532feetmakingitthehighestmountainontheAtlanticseaboard.B.ItissplitalmostinhalfbySomesSoundadeepandnarrowstretchofwatersevenmileslong.C.halsotiesinamajorbirdmigrationlaneandisarestingspotformanybirds.D.Thetermcomesfromtheactivityoftheiceage.E.Mt.DesertIslandisoneofthemostfamousofalltheislandsleftbehindbytheglacier.F.ThewealthyresidentsofMr.DesertIslandselfishlykeptittothemselves.
Thetestproduceddisappointingresults.
Hisshoeswereshinedtoperfection.
Marshaconfessedthatsheknewnothingofcomputer.
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
CellPhones:HangUporKeepTalkingMillionsofpeopleareusingcellphonestoday.Inmanyplacesitisactuallyconsideredunusualnottouseone.Inmanycountriescellphonesareverypopularwithyoungpeople.Theyfindthatthephonesaremorethanameansofcommunication--havingamobilephoneshowsthattheyarecoolandconnected.Theexplosionsaroundtheworldinmobilephoneusemakesomehealthprofessionalsworried.Somedoctorsareconcernedthatinthefuturemanypeoplemaysufferhealthproblemsfromtheuseofmobilephones.InEnglandtherehasbeenaseriousdebateaboutthisissue.Mobilephonecompaniesareworriedaboutthenegativepublicityofsuchideas.Theysaythatthereisnoproofthatmobilephonesarebadforyourhealth.OntheotherhandwhydosomemedicalstudiesshowchangesinthebraincellsofsomepeoplewhousemobilephonesSignsofchangeinthetissuesofthebrainandheadcanbedetectedwithmodernscanning扫描equipment.Inonecaseatravelingsalesmanhadtoretireatayoungagebecauseofseriousmemoryloss.Hecouldn’trememberevensimpletasks.Hewouldoftenforgetthenameofhisownson.Thismanusedtotalkonhismobilephoneforaboutsixhoursadayeverydayofhisworkingweekforacoupleofyears.Hisfamilydoctorblamedhismobilephoneusebuthisemployer’sdoctordidn’tagree.WhatisitthatmakesmobilephonespotentiallyharmfulTheanswerisradiation.High-techmachinescandetectverysmallamountsofradiationfrommobilephones.Mobilephonecompaniesagreethatthereissomeradiationbuttheysaytheamountistoosmalltoworryabout.Asthediscussionabouttheirsafetycontinuesitappearsthatit’sbesttousemobilephoneslessoften.Useyourregularphoneifyouwanttotalkforalongtime.Useyourmobilephoneonlywhenyoureallyneedit.Mobilephonescanbeveryusefulandconvenientespeciallyinemergencies.Inthefuturemobilephonesmayhaveawarninglabelthatsaystheyarebadforyourhealth.Sofornowit’swisenottouseyourmobilephonetoooften.Thesalesmanretiredyoungbecause
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
Thebooktooktenyearsofthoroughresearch.
CellPhones:HangUporKeepTalkingMillionsofpeopleareusingcellphonestoday.Inmanyplacesitisactuallyconsideredunusualnottouseone.Inmanycountriescellphonesareverypopularwithyoungpeople.Theyfindthatthephonesaremorethanameansofcommunication--havingamobilephoneshowsthattheyarecoolandconnected.Theexplosionsaroundtheworldinmobilephoneusemakesomehealthprofessionalsworried.Somedoctorsareconcernedthatinthefuturemanypeoplemaysufferhealthproblemsfromtheuseofmobilephones.InEnglandtherehasbeenaseriousdebateaboutthisissue.Mobilephonecompaniesareworriedaboutthenegativepublicityofsuchideas.Theysaythatthereisnoproofthatmobilephonesarebadforyourhealth.OntheotherhandwhydosomemedicalstudiesshowchangesinthebraincellsofsomepeoplewhousemobilephonesSignsofchangeinthetissuesofthebrainandheadcanbedetectedwithmodernscanning扫描equipment.Inonecaseatravelingsalesmanhadtoretireatayoungagebecauseofseriousmemoryloss.Hecouldn’trememberevensimpletasks.Hewouldoftenforgetthenameofhisownson.Thismanusedtotalkonhismobilephoneforaboutsixhoursadayeverydayofhisworkingweekforacoupleofyears.Hisfamilydoctorblamedhismobilephoneusebuthisemployer’sdoctordidn’tagree.WhatisitthatmakesmobilephonespotentiallyharmfulTheanswerisradiation.High-techmachinescandetectverysmallamountsofradiationfrommobilephones.Mobilephonecompaniesagreethatthereissomeradiationbuttheysaytheamountistoosmalltoworryabout.Asthediscussionabouttheirsafetycontinuesitappearsthatit’sbesttousemobilephoneslessoften.Useyourregularphoneifyouwanttotalkforalongtime.Useyourmobilephoneonlywhenyoureallyneedit.Mobilephonescanbeveryusefulandconvenientespeciallyinemergencies.Inthefuturemobilephonesmayhaveawarninglabelthatsaystheyarebadforyourhealth.Sofornowit’swisenottouseyourmobilephonetoooften.Thewriter’spurposeofwritingthisarticleistoadvisepeople
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
CellPhones:HangUporKeepTalkingMillionsofpeopleareusingcellphonestoday.Inmanyplacesitisactuallyconsideredunusualnottouseone.Inmanycountriescellphonesareverypopularwithyoungpeople.Theyfindthatthephonesaremorethanameansofcommunication--havingamobilephoneshowsthattheyarecoolandconnected.Theexplosionsaroundtheworldinmobilephoneusemakesomehealthprofessionalsworried.Somedoctorsareconcernedthatinthefuturemanypeoplemaysufferhealthproblemsfromtheuseofmobilephones.InEnglandtherehasbeenaseriousdebateaboutthisissue.Mobilephonecompaniesareworriedaboutthenegativepublicityofsuchideas.Theysaythatthereisnoproofthatmobilephonesarebadforyourhealth.OntheotherhandwhydosomemedicalstudiesshowchangesinthebraincellsofsomepeoplewhousemobilephonesSignsofchangeinthetissuesofthebrainandheadcanbedetectedwithmodernscanning扫描equipment.Inonecaseatravelingsalesmanhadtoretireatayoungagebecauseofseriousmemoryloss.Hecouldn’trememberevensimpletasks.Hewouldoftenforgetthenameofhisownson.Thismanusedtotalkonhismobilephoneforaboutsixhoursadayeverydayofhisworkingweekforacoupleofyears.Hisfamilydoctorblamedhismobilephoneusebuthisemployer’sdoctordidn’tagree.WhatisitthatmakesmobilephonespotentiallyharmfulTheanswerisradiation.High-techmachinescandetectverysmallamountsofradiationfrommobilephones.Mobilephonecompaniesagreethatthereissomeradiationbuttheysaytheamountistoosmalltoworryabout.Asthediscussionabouttheirsafetycontinuesitappearsthatit’sbesttousemobilephoneslessoften.Useyourregularphoneifyouwanttotalkforalongtime.Useyourmobilephoneonlywhenyoureallyneedit.Mobilephonescanbeveryusefulandconvenientespeciallyinemergencies.Inthefuturemobilephonesmayhaveawarninglabelthatsaystheyarebadforyourhealth.Sofornowit’swisenottouseyourmobilephonetoooften.PeoplebuycellphonesforthefollowingreasonsEXCEPTthat
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
Weexploredthepossibilityofexpansionattheconference.
CalculatingCrimeWhenyouthinkaboutmathyouprobablydon’tthinkaboutbreakingthelawsolvingmysteriesorfindingcriminals.ButamathematicianinMarylanddoesandhehascomeupwithmathematicaltoolstohelppolicefindcriminals.Peoplewhosolvecrimeslookforpatternsthatmightrevealtheidentityofthecriminal.It’slongbeenbelievedforexamplethatcriminalswillbreakthelawclosertowheretheylive.simplybecauseit’seasiertogetaroundinone’sownneighborhood.Ifpoliceseeapatternofrobberiesinacertainareatheymaylookforasuspectwholivesnearthecrimescenes.Sothefartherawayfromtheareaacrimetakesplacethelesslikelyitisthatthesamecriminaldidit.ButMikeO’LearyamathematicianatTowsonUniversityinMarylandsaysthatthiskindofapproachmaybetoosimple.Hesaysthatpolicemaygetbettercluestothelocationofanoffender’shomebasebycombiningthesepatternswithacity’slayoutandhistoricalcrimerecords.Therecordsofpastcrimescontaingeographicalinformationandcanrevealeasytargets--thatisthekindofstoresthatmightbelessdifficulttorob.Becausethesestoresarealongroadsthelocationsofpastcrimescontaininformationaboutwheremajorstreetsandintersections十字路口are.O’Learyiswritinganewcomputerprogramthatwillquicklyprovidethiskindofinformationforagivencity.Hisprogramalsoincludesinformationaboutthepeoplewholiveinthecityandinformationabouthowacriminal’spatternschangewithage.It’sbeenshownforexamplethattheyoungerthecriminaltheclosertohomethecrime.OthercomputerprogrammershaveworkedonsimilarsoftwarebutO’Leary’susesmoremath.Themathematicianplanstomakehiscomputerprogramavailablefreeofchargetopolicedepartmentsaroundthecountry.Theprogramisjustonewaytousemathtofightcrime.O’Learysaysthatcriminology--thestudyofcrimeandcriminalscontainsalotofgoodmathproblems.IfeellikeI’minagoldmineandI’mtheonlyone.whoknowswhatgoldlookslike.hesays.It’salotoffun./O’LearyincludesallthefollowinginformationinwritinghisprogramEXCEPT
LakesTooFeelGlobalWarmingThere’snodoubt:InthelastfewdecadestheaveragetemperatureonEarthhasbeenhigherthanithasbeeninhundredsofyears.Aroundtheworldpeoplearestartingtomeasuretheeffectsofglobalwarmingandtryingtofigureoutwhattodoaboutit.Scientistsrecentlyusedsatellitestostudythetemperaturesoflakesaroundtheworldandtheyfoundthatlakesareheatingup.Between1985and2009satellitesrecordedthenighttimetemperaturesofthesurfacesof167lakes.Duringthose24yearsthelakesgotwarmer--byanaverageofabout0.045degreeCelsiusperyear.Insomeplaceslakeshavebeenwarmingbyasmuchas0.10degreeCelsiusperyear.AtthatratealakemaywarmbyafulldegreeCelsiusinjust10years.Thatdifferencemayseemsmall--youmightnotevennoticeitinyourbath.Butinalakeslightlywarmertemperaturescouldmeanmorealgae水藻andalgaecanmakethelakepoisonoustofish.Thestudyshowsthatinsomeregionslakesarewarmingfasterthantheairaroundthem.ThisisimportantbecausescientistsoftenusemeasurementsofairtemperaturetostudyhowEarthiswarming.Byusinglaketemperaturesaswellscientistscangetabetterpictureofglobalwarming.Thescientistssaydataonlakesgivescientistsanewwaytomeasuretheimpactofclimatechangearoundtheworld.That’sgoingtobeusefulsincenocountryistoobigortoosmalltoignoreclimatechange.Scientistsaren’ttheonlyonesconcernedEveryonewholivesonEarthisgoingtobeaffectedbytherapidwarmingoftheplanet.Manyworldleadersbelievewemightbeabletodosomethingaboutitespeciallybyreducingtheamountofgreenhouse温室gasesweputintotheair.That’swhytheUnitedNationsstartedtheFrameworkConventiononClimateChangeorUNFCCC.Everyyeartheconventionmeetsandrepresentativesfromcountriesaroundtheworldgathertotalkaboutclimatechangeanddiscussglobalsolutionstothechallengesofawarmingworld.Scientistshavebeenkeepingrecordsoflaketemperaturesforover30years.
Mt.DesertIslandThecoastoftheStateofMaineisoneofthemostirregularintheworld.Astraightlinerunningfromthesouthernmostcoastalcitytothenorthernmostcoastalcitywouldmeasureabout225miles.Ifyoufollowedthecoastlinebetweenthesepointsyouwouldtravelmorethantentimesasfar.Thisirregularityistheresultofwhatiscalledadrownedcoastline.______46AtthattimethewholeareathatisnowMainewaspartofamountainrangethattoweredabovethesea.Astheglacier冰川descendedhoweveritexpendedenormousforceonthosemountainsandtheysankintothesea.Astbemountainssankoceanwaterchargedoverthelowestpartsoftheremaininglandformingaseriesoftwistinginletsandlagoons咸水湖.Thehighestpartsoftheformermountainrangenearesttheshoreremainedasislands.______47Marinefossilsfoundherewere225feetabovesealevelindicatingtheleveloftheshorelinepriortotheglacier.The2.500-milelongrockycoastlineofMainekeepswatchovernearlytwothousandislands.Manyoftheseislandsaretinyanduninhabitedbutmanyarehomelothrivingcommunities.Mt.DesertIslandisoneofthelargestmostbeautifuloftheMainecoastislands.Measuring16milesby12milesMt.Desertwasessentiallyformedastwodistinctislands.______48ForyearsMt.DesertIsland.particularlyitsmajorsettlementBarHarboraffordedsummerhomesforthewealthy.RecentlythoughBarHarborhasbecomearapidlygrowingartscommunityaswell.ButthebestpartoftheislandistheunspoiledforestlandknownasAcadiaNationalPark.Becausetheislandsitsontheboundarylinebetweenthetemperate温带andsub-Arcticzonestheislandsupportstheplantsandanimalsofbothzonesaswellasbeachinlandandalpine高山的plants.______49TheestablishmentofAcadiaNationalParkin1916meansthatthisnaturalreservewillbeperpetuallyavailabletoallpeoplenotjustthewealthy.VisitorstoAcadiamayreceivenatureinstructionfromtheparknaturalistsaswellasenjoycampingcyclingandboating.OrtheymaychoosetospendtimeatthearcheologicalmuseumlearningabouttheStoneAgeinhabitantsoftheisland.ThebestviewonMt.DesertIslandisfromthetopofCadillacMountain.______50FromthesummityoucangazebacktowardthemainlandoroutovertheAtlanticOceanandcontemplatethebeautycreatedbyaretreatingglacier.A.Thismountainrises1532feetmakingitthehighestmountainontheAtlanticseaboard.B.ItissplitalmostinhalfbySomesSoundadeepandnarrowstretchofwatersevenmileslong.C.halsotiesinamajorbirdmigrationlaneandisarestingspotformanybirds.D.Thetermcomesfromtheactivityoftheiceage.E.Mt.DesertIslandisoneofthemostfamousofalltheislandsleftbehindbytheglacier.F.ThewealthyresidentsofMr.DesertIslandselfishlykeptittothemselves.
CalculatingCrimeWhenyouthinkaboutmathyouprobablydon’tthinkaboutbreakingthelawsolvingmysteriesorfindingcriminals.ButamathematicianinMarylanddoesandhehascomeupwithmathematicaltoolstohelppolicefindcriminals.Peoplewhosolvecrimeslookforpatternsthatmightrevealtheidentityofthecriminal.It’slongbeenbelievedforexamplethatcriminalswillbreakthelawclosertowheretheylive.simplybecauseit’seasiertogetaroundinone’sownneighborhood.Ifpoliceseeapatternofrobberiesinacertainareatheymaylookforasuspectwholivesnearthecrimescenes.Sothefartherawayfromtheareaacrimetakesplacethelesslikelyitisthatthesamecriminaldidit.ButMikeO’LearyamathematicianatTowsonUniversityinMarylandsaysthatthiskindofapproachmaybetoosimple.Hesaysthatpolicemaygetbettercluestothelocationofanoffender’shomebasebycombiningthesepatternswithacity’slayoutandhistoricalcrimerecords.Therecordsofpastcrimescontaingeographicalinformationandcanrevealeasytargets--thatisthekindofstoresthatmightbelessdifficulttorob.Becausethesestoresarealongroadsthelocationsofpastcrimescontaininformationaboutwheremajorstreetsandintersections十字路口are.O’Learyiswritinganewcomputerprogramthatwillquicklyprovidethiskindofinformationforagivencity.Hisprogramalsoincludesinformationaboutthepeoplewholiveinthecityandinformationabouthowacriminal’spatternschangewithage.It’sbeenshownforexamplethattheyoungerthecriminaltheclosertohomethecrime.OthercomputerprogrammershaveworkedonsimilarsoftwarebutO’Leary’susesmoremath.Themathematicianplanstomakehiscomputerprogramavailablefreeofchargetopolicedepartmentsaroundthecountry.Theprogramisjustonewaytousemathtofightcrime.O’Learysaysthatcriminology--thestudyofcrimeandcriminalscontainsalotofgoodmathproblems.IfeellikeI’minagoldmineandI’mtheonlyone.whoknowswhatgoldlookslike.hesays.It’salotoffun./Whichofthefollowingstatementsaboutmathistrue
A.distributedB.personalizedC.modifiedD.increasedE.browsedF.releasedInApril2010theiPaddevelopedbyApplewas______.
SomePeopleDoNotTasteSaltlikeOthersLow-saltfoodsmaybeharderforsomepeopletolikethanothersaccordingtoastudybyaPennStateCollegeofAgriculturalSciencesfoodscientist.Theresearchindicatesthatgeneticfactorsinfluencesomeofthedifferenceinthelevelsofsaltweliketoeat.Thoseconclusionsareimportantbecauserecentwell-publicized大力宣传的effortstoreducethesaltcontentinfoodhaveleftmanypeoplestrugglingtoacceptfoodthatsimplydoesnottasteasgoodtothemasitdoestootherspointedoutJohnHayesleadinvestigatoronthestudy.Dietshighinsaltcanincreasetheriskofhighbloodpressureandstroke.Thatiswhypublichealthexpertsandfoodcompaniesareworkingtogetheronwaystohelpconsumerslowersaltintakethroughfoodsthatareenjoyabletoeat.Thisstudyincreasesunderstandingofsaltpreferenceandconsumption.Theresearchinvolved87carefullyscreenedparticipantswhosampledsaltyfoodssuchassoupandchipsonmultipleoccasionsspreadoutoverweeks.Testsubjectswere45menand42womenreportedlyhealthyranginginagefrom20to40.Theyratedtheintensityoftasteonacommonlyusedscientificscalerangingfrombarelydetectabletostrongestsensationofanykind.Mostofuslikethetasteofsalt.HoweversomeindividualseatmoresaltbothbecausetheylikethetasteofsaltinessmoreandalsobecauseitisneededtoblockotherunpleasanttastesinfoodsaidHayes.Supertasterspeoplewhoexperiencetastesmoreintenselyconsumemoresaltthannontasters.Snackfoodshavesaltinessastheirprimaryflavorandatleastforthesefoodsmoreisbettersothesupertastersseemtolikethemmore.HoweversupertastersalsoneedhigherlevelsofsalttoblockunpleasantbittertastesinfoodssuchascheeseHayesnoted.Forexamplecheeseisawonderfulblendofdairyflavorsfromfermented发酵地milkbutalsobittertastesfromripeningthatareblockedbysalthesaid.Asupertasterfindslow-saltcheeseunpleasantbecausethebitternessistoopronounced.Hayescitedresearchdonemorethan75yearsagobyachemistnamedFoxandageneticistnamedBlakesleeshowingthatindividualsdifferintheirabilitytotastecertainchemicals.AsaresultHayesexplainedweknowthatawiderangeintasteacuity敏锐existsandthisvariationisasnormalasvariationsineyeandhaircolor.Thefourthparagraphbrieflydescribes
A.distributedB.personalizedC.modifiedD.increasedE.browsedF.releasediPadapplicationsenabletheowner’semailaccountstobe______.
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
YoungAdultsWhoExerciseGetHigherIQScoresYoungadultswhoarefithaveahigherIQandaremorelikelytogoontouniversityrevealsamajornewstudy51outattheSahlgrenskaAcademyandSahlgrenskaUniversityHospital.TheresultswererecentlypublishedintheProceedingsoftheNationalAcademyofSciencesPNAS.Thestudy521.2millionSwedishmendoingmilitaryservicewhowerehornbetween1950and1976.Theresearchgroupanalyzedthe53ofbothphysicalandIQteststheyoungsterstookrightaftertheystartedservingthearmy.Thestudyshowsaclearlink54goodphysicalfitnessand]wrierresultsfortheIQlest.Thestrongestlinksarefor55thinkingandverbalcomprehension.Butitisonlyfitnessthatplaysa56intheresultsfortheIQlest.andnotstrength.Beingfitmeansthatyoualsohavegoodheartandlung57andthatyourbraingetsplentyofoxygen.saysMichaelNilssonprofessorattheSahlgrenskaAcademyandchiefphysicianattheSahlgrenskaUniversityHospital.Thismaybeoneofthereasonswhywecanseeaclearlinkwithfitnessbutnotwithmuscular58.Wearealsoseeingthattherearegrowthfactorsthatareimportant.Byanalyzingdatafortwinstheresearchershavebeen59todeterminethatitisprimarilyenvironmentalfactorsandnotgenesthat60thelinkbetweenfitnessandahigherIQ.Wehavealsoshownthatthoseyoungsterswho61theirphysicalfitnessbetweentheagesof15and18increasetheirperformancesaysMaria.AbergresearcheratTheSahlgrenskaAcademyandphysicianatAhyhealthcentre.Thisbeingthecasephysicaleducationisa62thathasanimportantplaceinschoolsandisanabsolutemust63wewanttodowellinmathsandothertheoreticalsubjects.Theresearchershavealsocomparedtheresultsfromfitnesstestsduringnationalservice64thesocioeconomicstatusofthemenlaterinlife.Thosewhowerefitat18weremore65togointohighereducationandmanysecuredmorequalifiedjobs.
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