health.docx
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health.docx
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health
Directions:
Readthefollowingpassage,andthenanswerthequestionsbychoosingthebestanswerfromthefourchoicesmarkedABCD.
BecomeHealthierwithGreenTea
Thegreenteaisoneofthemostpopularbeveragesaroundtheworld.ItisadoredinAsiancountriesanditstartedtotakewesterntealoversseveralyearsago.Howcanitbehealthyforyou?
Orshouldyouavoidit?
Eachofusisunique,butagreenteahasalotofadvantagesthatmightbeusefulforyou.Don’tmissachancetolivehealthier.
Chinesepeopleevenhaveaproverbabouttreatingpowersofthegreentea,sayingthatit’sbettertohaveacupofgreenteathantotakeamedicine.Why?
It’sbecauseofhealthycomponentshidinginthisdrink.
Greenteacontainsantioxidants(抗氧化剂)thatcanimproveyourhealthinseveralways.Firstofall,theycansloweragingprocessbecausetheyfightfreeradicalsthatareproducedbyhumanbodyallthetime.Freeradicalsdamagecellsandmightcausesomeillness.It’sanaturalprocessanditcan’tbestopped,butitcanbeslowed.
Greenteaincreasesbody’simmunesystembyfightingcertainbacteria.Whenbrewed,itcanneutralizechloramines(氯胺)inwater.Somedoctorsrecommendgreenteaasatreatmentfordiarrhea.
Addinggreenteatoyourdietmighthelpyoutoimprovecirculationofthebloodandreduceariskofheartdiseases.Drinkinggreentearegularlyhelpstolowerbloodsugar.Catechinsfoundingreenteamakesgreatinfluencetochemicalsthatcauseshighbloodpressure.
ScientistslearnedthatcancerdiseasesweremuchrarerinthoseJapaneseregionsthatconsumemuchmoregreenteacomparingtootherregions.Thisconnectionisunderinvestigations,butsomeofthepreventingfeatureshavealreadybeenproven.Medicsagreethatgreenteaextractcanfacilitatestateforpatientsofchroniclymphocyticleukaemia(淋巴细胞性白血病).
Greenteacontainscaffeinethatrefreshesandawakesone.Caffeineamountinagreenteaisnotassignificantasinblackteaorcoffee,butbecauseofothergreenteaingredients,caffeineisabsorbedslowlyandhasdifferenteffect.Furthermore,greenteaishealthierthancoffee,becausecoffeemakesbodytodehydrated.
Scientistsconfirmedthatgreenteasignificantlyincreasesfatburning.Ifyouareonaplantolosesomeweight,it’srecommendedtodrinkgreenteadailytoacceleratetheprocessandkeepyoubrisk.
However,greenteaisnotacureforalldiseasesandevencancausesomehealthdisorders,especiallywhenconsumedtoooften.Howtotakealltheadvantagesofgreentea?
Thesecretisinproperbrewing.Donotbrewgreenteawithboiledwaterbutwaittillit’sabitcolder.Vitaminsandotherusefulmaterialscanbedamagedinhightemperatures.Removetealeavesorteabag2-5minutesafterbrewingforthebesttaste.Thewatertakesalltheusefulmaterialsfromtealeavesinthisperiod;itcanturnbitterifyoudon’tfilterteaofffiveminutesafterbrewing.
1.Thegreenteaisoneof.
A.themostpopularbeveragesinAsiancountries
B.themostpopulardrinksintheworld
C.themostpopulardrinkingwaterinwesterncountries
D.themostpopularteainChina
2.Howmanyadvantagesofgreenteadoesthewriterpresentinthispassage?
A.ThreeB.FourC.FiveD.Six
3.Whichofthefollowingisnotmentionedasoneofthebenefitsofgreentea?
A.Lowertotalcholesterollevels
B.Increasebody’simmunesystem
C.Improvecirculationoftheblood
D.Sloweragingprocess
4.Greenteacontainsantioxidantsthatcansloweragingprocessbecause.
A.theyfightcertainbacteria
B.theyfightfreeradicals
C.theyhelptolowerbloodsugar
D.theyfacilitatestateforpatientsofchroniclymphocyticleukaemia
5.Accordingtothispassage,caffeineingreentea.
A.canmakeonetooexcitedtosleep
B.canmakeonefeelinspiredandhaveafreshmind
C.canmakeonedifferentfromwhatheusedtobe
D.cankeeponeawakeatafixedtime
6.Whyisgreenteahealthierthancoffee?
A.Coffeecontainslesscaffeinethangreentea.
B.Caffeineingreenteacannotbeabsorbed.
C.Coffeemakesbodylosetoomuchwater.
D.Caffeineingreenteaismoreimportantthanincoffeeinkeepinghealthy.
7.Accordingtotheauthor,greentea.
A.cancausepeopletoavoidsomehealthdisorderswhenconsumedtoooften
B.isnotacureforalldiseasesexceptinsomnia
C.canbeconsumedatwill
D.mayhavesomesideeffectsinsomecases
8.Theeffectivewaytotakealltheadvantagesofgreenteais.
A.tobrewgreenteainanappropriateway
B.tochoosethebestgreentea
C.tocookgreenteawithcoldwater
D.toremovetealeavesorteabagimmediatelyafterbrewing
Directions:
Readthefollowingpassage,andthencompletethesentenceswiththeinformationgiveninthepassage.
StayinBedThatExtraHour:
ItAidsThinking
PsychologistsattheUniversityofRomepulledtogethermorethan100studiesoftheeffectsofsleeponcognitivetasksandfoundthatstayingoutofbedfortoolongcanhaveseriouseffectsontheabilitytorememberandlearnnewinformation.Forstudents,theyfoundthatabadnight’ssleepcouldevenresultinworsegrades.
“Recentstudiesinmoleculargenetics,neurophysiologyandcognitiveandbehavioralneurosciencehavestrengthenedtheideathatsleepmayplayanimportantroleinlearningandmemory,althoughtheextentofthisroleremainshotlydebated,”wroteGiuseppeCurcioa,MicheleFerraraandLuigiDeGennaroainthejournalSleepMedicineReviews.“Thereisstillpoorunderstandingasregardswhichaspectsofmemoryfunctionareaffectedbysleepandwhichprocessesunderliememoryconsolidation.”
Inonestudy,researcherscomparedhealth,behavior,sleepcomplaintsandschoolperformanceofnormalandpoorsleepers.“Twenty-onepercentofpoorsleepersfailedoneormoreyearsatschool,whilesimilarproblemswereobservedinjust11%ofnormalsleepers.Moreover,schoolachievementdifficultiesresultedmorefrequentlyinpoorthaninnormalsleepers.Oneofthebestpredictorsforthislowschoolachievementhasbeenidentifiedinchildren’sfatigue,”saidProfessorCurcioa.
Astudyof3,000highschoolstudentsin1998showedthatstudentswithhighergradesreportedmoretotalsleep,earlierbedtimeonschoolnightsandlessirregularsleeppatternsatweekendsthanstudentswithlowergrades.
Anotherstudyinvestigatedtheeffectsoftotalsleepdeprivationonstudentsinalaboratory.After18hoursmovementandresponsetimesslowed;at34hoursendurancedropped;at42hoursagility,balanceandpowerweresignificantlyweakened;at50hoursspeedwasaffected.
Theresearchersconcludedwhatteenagershaveprobablyknownunconsciouslyforyears.“Sleeplossisfrequentlyassociatedwithpoordeclarativeandprocedurallearninginstudents.Studiesinwhichsleepwasactivelyrestrictedoroptimized(使最优化)showed,respectively,aworseningoranimprovementinneurocognitiveandacademicperformance.Theseresultsmayhavebeenrelatedtothespecificinvolvementoftheprefrontalcortex(PFC)(前额皮层)invulnerabilitytosleeploss.”ThePFCisthebrainregionthatplanscomplexcognitiveactions,expressespersonalityandmakessureapersonbehavesappropriatelyinsocialsituations.
Prof.Curcioasaidthedecreaseinneurocognitivefunctioningcouldberevertedbyadoptinghealthysleepschedules.
Theadvicefromtheexperts,then,issimple.Stayinbedforthatextrahour.
1.Havingstudiedtheeffectsofsleeponcognitivetasks,psychologistsattheUniversityofRomediscoveredthatinadequatesleepcaninfluencestronglytheabilityto.
2.Psychologistsfoundthatforstudentsapoornight’ssleepcouldevenleadto.
3.Recentstudiesinsomespecialfieldshaveshownthatsleepmayinlearningandmemory.
4.Accordingtosomeprofessors,peoplehaveaboutwhichaspectsofmemoryfunctionareaffectedbysleepandwhichprocessesunderliememoryconsolidation.
5.ProfessorCurcioasaidthat21%offailedintheirexams,whileonly11%ofnormalsleepershadsimilarproblems.
6.Comparedwithstudentswithlowergrades,studentswithhighergradeshavemoresleep,earlierbedtimeonschoolnightsandatweekends.
7.isoftenconnectedwithbaddeclarativeandprocedurallearninginstudents.
8.AccordingtoProf.Curcioa,healthysleepschedulescontributetotherecoveryof.
1.rememberandlearnnewinformation2.worsegrades.3.playanimportantrole4.poorunderstanding5.poorsleepers6.lessirregularsleeppatterns7.Sleeploss8.thedecreaseinneurocognitivefunctioning
Directions:
Readthefollowingpassage,andthenanswerthequestionsbychoosingthebestanswerfromthefourchoicesmarkedABCD.Forquestions8-10,completethesentenceswiththeinformationgiveninthepassage.
NewAdvice:
Don’tSitUpStraight
Thelongstandingadviceto“situpstraight”hasbeenturnedonitsheadbyanewstudythatsuggestsleaningbackisamuchbetterposture.
Researchersanalyzeddifferentposturesandconcludedthatthestrainofsittinguprightforlonghoursisacriminalofchronicbackproblems.
Usinganewformofmagneticresonanceimaging(MRI)(磁共振成像),researchersstudiedvolunteerswithnobackpainhistory.Thesubjectsassumedthreedifferentpositions:
slouching;sittingupstraightat90degrees;andsittingbackwitha135-degreeposture—allwhiletheirspineswerescanned.
“A135-degreebody-thighsittingposturewasdemonstratedtobethebestbiomechanicalsittingposition,asopposedtoa90-degreeposture,whichmostpeopleconsidernormal,”saidstudyauthor,WaseemAmirBashir,aresearcherattheUniversityofAlbertaHospitalinCanada.“Sittinginasoundanatomicpositionisessential,sincethestrainputonthespineanditsassociated
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