health.docx

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