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高考资源网(),您身边的高考专家欢迎广大教师踊跃来稿,稿酬丰厚。高考资源网(),您身边的高考专家欢迎广大教师踊跃来稿,稿酬丰厚。CAntidepressant(抗忧郁)drugssuchasProzacwereviewedintheearly1900'saswonderpillsthatwouldremovedepressivebluesforgood.Butinthepastfiveyears,growingscientificevidencehasshownthesedrugsworkforonlyaminorityofpeople.Andnowaresearchjournalsaysthattheseantidepressantscanmakemanypatients'depressionworse.Thisalarmingsuggestioncentresontheverychemicalthatistargetedbyantidepressants-serotonin(血清素).DrugssuchasProzacareknownasselectiveserotoninre-uptakeinhibitors(orSSRIs).Theiraimistoincreasethelevelofthis“feel-good”chemicalinthebrain.Butthenewresearch,publishedinthejournalFrontiersInEvolutionaryPsychology,pointsoutthatserotoninislikeachemicalSwissArmyknife,performingaverywiderangeofjobsinthebrainandbody.Andwhenwestartchangingserotoninlevelspurposely,itmaycauseawiderangeofunwantedeffects.Thesecanincludedigestiveproblemsandevenearlydeathsinolderpeople,accordingtothestudy'sleadresearcherPaulAndrews.“Weneedtobemuchmorecautiousaboutuseofthesedrugs,”saysAndrews,anassistantprofessorofevolutionarypsychologyatMcMasterUniversityinOntario,Canada.Previousresearchhassuggestedthatthedrugsprovidelittlebenefitformostpeoplewithmilddepression,andactivelyhelponlyafewofthemostseverelydepressed.FamouspsychologistIrvingKirschhasfoundthatformanypatients,SSRIsarenomoreeffectivethanaplacebopill.Aresearchin2010onDanishchildrenfoundasmall,butsignificant,increaseintheriskofheartproblemsamongbabieswhosemothershadusedSSRIsinearlypregnancy.Thekeytounderstandingtheseside-effectsisserotonin,saysAndrews.SerotoninisalsothereasonwhypatientscanoftenendupfeelingstillmoredepressedaftertheyhavefinishedacourseofSSRIdrugs.HearguesthatSSRIantidepressantsdisturbthebrain,leavingthepatientanevengreaterdepressionthatbefore.“Serotoninisanancientchemical,”saysAndrews,“Itisregulatingmanydifferentprocesses,andwhenyoudisturbthesethings,youcanexpectthatitisgoingtocausesomeharm.”StaffordLightman,professorofmedicineattheUniversityofBristol,andaleadingUKexpertinbrainchemicalsandhormones,saysAndrews'reviewhighlightssomeimportantproblems,yetitshouldalsobetakenwithapinchofsalt.“Thisreportisdoingtheoppositeofwhatdrugcompaniesdo,”hesays.“Drugcompaniesselectivelypresentallthepositivesintheirresearch,whilethissearchselectivelypresentsallthenegativesthatcanbefound.Nevertheless,Andrews'studyisusefulinthatitisalwaysworthpointingoutthatthereisadownsidetoanymedicine.”ProfessorLightmanaddsthatthereisstillagreatdealwedon'tknowaboutSSRIs—notleastwhattheyactuallydoinourbrains.Whenitcomestounderstandingwhythedrugsworkonlyforalimitedpartofpatients,U.S.scientiststhinktheymightnowhavetheanswer.Theythinkthatinmanydepressedpatients,it'snotonlythelackoffeel-goodserotonincausingtheirdepression,butalsoafailureintheareaofthebrainthatproducesnewcellsthroughoutourlives.Thisarea,thehippocampus,isalsoresponsibleforregulatingmoodandmemory.Researchsuggeststhatinpatientswhosehippocampushaslosttheabilitytoproducenewcells,SSRIsdonotbringanybenefit.63.Accordingtoparagraph2,serotonin,likeachemicalSwissArmyknife,can________.A.makemanypatients'depressionworseB.causeawiderangeofunwantedeffectsC.affecthumanbodyandbraininvariouswaysD.providelittlebenefitformostdepressedpeople64.InStaffordLightman'sopinion,________.A.drugcompaniesdon'tknowthenegativeeffectofantidepressantsB.AndrewsfocusedondifferentthingsfromthedrugcompaniesC.scientistshavefoundwhatSSRIsdointhebrainD.Andrews'researchhasnomedicalvalue65.WhichofthefollowingisTRUEaboutSSRIs?A.Theyareusedtoincreasethe“feel-good”chemicalinthebrain.B.Theycanworkevenwhenthehippocampuscan'tproducenewcells.C.Theycreateariskofheartproblemsinpregnantwomen.D.Theyareresponsibleforcontrollingmoodandmemory.66.Whatisthetextmainlyabout?A.Theaimofdrugcompanies.B.ThefunctionofSSRIs.C.Theside-effectsofantidepressants.D.Thecauseofdepression.DDetectiveKeelingtookhisclient—agood-lookingladyintothebackyardofthestoretogether.Theladyopenedadoorinthewallandtheyenteredthesmallroombehindthestore.Theycrossedtheroomtoalockeddoor.Mr.Keelingtooksomespecialkeysfromhispocket.Momentslater,oneofthekeysunlockedthedoor.Theladywentintothestore.Shesaidshewouldhideunderthetabletokeepwatchonherhusband.Mr.Keelingdidnotfollowher.Thedetectivewentquicklytothepoliceman'shouse.Thenthetwomenhurriedtothejewellerystore.Theylookedthroughthewindow.Thepolicemanwassurprised.HespoketoMr.Keeling.“Idon'tunderstand.Youtoldme,‘Robbinstookayoungwomantoarestaurant.’Whereisshe?”“Theresheis!”saidMr.Keeling.Hepointedthroughthewindow.“DoyouknowtheladywithRobbins?”askedthepoliceman.“That'shissecretfriend,”saidMr.Keeling.“No!You'rewrong!That'sRobbins'wife,”saidthepoliceman.“I'veknownherforfifteenyears.”“What?”thedetectiveshouted.Hisfacebecamepale.“Whoisunderthetableinthestore?”Hestartedtokickthedoorofthejewellerystore.Mr.Robbinscametothedoorandopenedit.Thepolicemanandthedetectiveranintothestore.“Lookunderthattable!”shoutedthedetective.“Bequick!”Thepolicemanliftedtheclothandputhisarmunderthetable.Hepulledoutablackdress,ablackveilandawoman'swig(假发).“Isthisyoungladyyourwife?”Mr.Keelingaskedthejeweler.Hepointedatthewoman.“Yes!Sheismywife!”saidMr.Robbinsangrily.“Whydidyoukickmydoor?Whyarethoseclothesundermytable?”“Pleasecheckallthejewelleryinyourstore,Mr.Robbins,”thepolicemansaid.“Isanythingmissing?”Somediamondringsandsomeexpensivenecklacesweremissing.Themissingjewellerywasworth$800.Laterthatnight,Mr.Keelingwassittinginhisoffice.Hewaslookingthroughabigbookofphotographs.Theywerephotographsofcriminals.Thepolicemanhadbroughtthebooktothedetective'soffice.Suddenly,Mr.Keelingstoppedturningthepages.Helookedatapictureofahandsomeyoungmanwithafamiliarface.Thenextmorning,Mr.Keelingpaidthejeweler$800,andthenclosedhisoffice.67.Atthebeginning,theladywasabletogointothejewellerystorebecause________.A.shewenttothebackyardandfoundthewayB.shewastheownerofthestoreandhadthekeyC.twomenhelpedhertogethertoenterthestoreD.Mr.Keelingunlockedthebackdoortothestore68.TheyoungladywhostayedwithMr.Robbinsinthejewellerystorewasactually________.A.Mr.Robbins'sisterB.Mr.Robbins'secretfriendC.Mr.Robbins'wifeD.acleverthief69.ItcanbeinferredfromthepassagethatMr.Keelingcooperatedwithhisclient________.A.sothathecouldgetsomejewelleryfromthestoreB.becausethethoughthewashelpingtheladyC.becausehewantedtoplayajokeonMr.RobbinsD.sothathecouldgetajobasapoliceman70.Themissingjewelleryworth$800wasinfacttakenawayby________.A.ayoungwomanB.ayoungmanC.adetectiveD.apoliceman第四部分:任务型阅读(共10小题,每小题1分,共10分)请认真阅读下列短文,并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意:每个空格只填1个单词。Prepackaged,mass-producedsnackfoodsarehugelypopularingrocerystoresaroundtheworld.Manypeopleareaccustomedtochoosingsnackfoodsingrocerystores.Thefirstproblemwithpackagedsnackfoodslikecookies,crackers,andotherbite-sizedoptionsisthattheyareoftenloadedwithunhealthymaterials.Thereasonforthisisfairlyeasytounderstand.Mass-producedfoodsneedtobeuniformincolor,tasteandsoon.Inordertoachievethisuniformity,snackfoodproducersusesugar,salt,andotherchemicalpreservatives(防腐剂)andcoloringmaterialsinlargeamounts.Thesematerialscontributetoaratherunhealthyfood.Inadditiontorequiringuniformityoftasteandappearance,mass-producedsnackfoodslikepotatochipsandcandiesneedtobeshelfstable.Preservativesandcomplexpackagingmakeproductsshelfstable,butthisstabilityandnon-perishability(抗腐性)oftencomeattheexpenseofnutrition.Onereasonthatpre-madesnacksaresopopularingrocerystoresistheirprices.Foodproducerscankeepcostsdownbyusingestablishedproductionfacilitiesandprocessestoquicklyproduceahugeamountoffood.Shoppersaredrawntowhattheyseeatlowprices.Peoplewhoareinterestedinimprovingthequalityoftheirsnackingcanusemagazines,books,andtheInternettodiscoveralotofhealthysnackingtipsandideas.Eventelevisionshowsabouthealthandfoodsometimestalkabouthealthysnackingalternatives.Somehealthysnacks,likefreshfruit,requirenopreparationatall.Oncepeopleareawareofthedrawbacksofclearlycheapandeasysnackfoods,theycanstartturningtobetteroptions.Soon,perhaps,theoldandunhealthysnackoptionswillnolongerbeprofitableforfoodproducers.Title:Prepackaged,mass-producedsnackfoodsFactPrepackaged,mass-producedsnackfoodsarewell(71)________aroundtheworld(72)________Havingpreservatives,coloringmaterialsand(73)________packagingHavinguniformityof(74)________andappearanceBeingshelfstableBeingatlow(75)________Problems(76)________unhealthymaterialsBeingshelfstableandnon-perishableleadingtosomenutrition(77)________MeasuresDiscoverhealthysnackingtipsandideasby(78)________magazines,books,theInternet
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