HolidayBluesA.Theholidayseasonhasalwaysbeenacauseforcelebrationaroundtheworld.Theopportunitytotakeabreakfromwork,befrivolous,goonholiday,meetfamilyandfriends---allgoodreasonstolookforwardtotheholidayswithenthusiasmandanticipation.Oratleastthatiswhatweareledtobelieve.B.ResearchcarriedoutinAmericasuggeststhatthesefeelingsofeuphoriamaybesomewhatmisplaced.AstudyrecentlycarriedoutbyNewYorkUniversityChildStudyCentrehasconcludedthatoneinthreepeopleofvaryingagessuffer‘holidayblues’tovaryingextents,fromamildfeelingofsadnesstosevere,sometimesevensuicidal,depression.Theeffectscanmanifestthemselvesinmanyways,suchasaninabilitytosleeporsleepingtoomuch,overeatingorundereating,headachesordrinkingtoomuch.Thereportalsoconcludedthatnotonlyarethereanumberofcomplexcausesthatcantriggersuchdepression(psychologicalandbiological),thereareanequalnumberofopinionsastothebestsolution.C.AccordingtoDrFrankPittman,aleadingfamilypsychiatrist,themostsignificantcauseforholidaydepressionactuallystemsfromourconcernsaboutourfamily.Duringtheholidayseason,familiesmeet,oftenforthefirsttimesincethelastholidayseason,andtrytomakethesereunions‘perfect’.Infact,saysPittman,wecountontheholidaystocompensatefortherestoftheyear.Hehimselfcommentsthat‘Iwantedtomakeuptothefamilyfornothavingbeenagoodenoughfatheranduncleallyear’.However,suchgoodintentionsareoftenthwartedbyoldfamilyarguments,feelingsofnotbeingappreciatedorbeingused,allofwhichresultinholidaystress.Itseemsthattheidyllicpictureofourfamilywewishtobuildinourmindscannotbesustainedinreality.D.AlthoughPittmanholdsfamilytobethesourceofmuchoftheproblem,otherspointtoamoregeneralsocialcontext.Giftshopping,forexample,doesnothelpreducetensions---crowdedshops,longqueues,thepressureofchoosingjusttherightpresent---allofthesethingscontributetoafeelingofstressandanxiety.Ontheotherendofthescale,therearethosewithoutfamilywhoexperienceasenseofextremelonelinessandisolationthroughoutthisperiod,oftenspendingthelongholidaysalone.Anyfeelingsofinadequacytheymayharbourthroughouttheyearcanoftenbecomeunbearableatatimewhenfriendsareunavailableandenjoyinganapparentlycosybreakwiththeirlovedones.Infact,suchistheextremenatureofthisisolationthatmanyorganisationshavebeenestablishedtooffersomehelpandsupporttothosewhofeelmostaloneoverwhatshouldbethe‘festive’season.E.Others,however,arguethatmorescientificexplanationscarryanequalweightinexplainingholidayblues.SeasonalAffectiveDisorder,orSADasitismorecommonlyknown,isalsoheldresponsibleforwinterdepression.Anaturalreactiontofallinglevelsofsunlight,thepinealglandsecretesthehormonemelatonin,whichhastheeffectofslowingthebodydown.Whendaysgetshorter,moreofthehormoneisreleasedcausingsuffererstobecomelethargicandmiserable.Frombeingindustriouspeoplewithplentyofenergy,SADsufferersfindthemselvesincreasinglywearyandunabletosustainanyprolongedactivity,asituationwhichoftenleadstodepression.Inaddition,formanypeoplethishasamajorimpactnotonlyontheirpersonallifebutalsoontheirprofessionallife,asemployersoftenseethislackofproductivityintermsoflazinessorunwillingnesstowork.Asaresult,SADhasbeenlinkeddirectlytothehighrateofsuicideinanumberofScandinaviancountriesduringwintermonths,whenthereareoftenafewhoursofsunlightaday.F.ThegoodnewsforSADsufferersisthatthereisacure,andasfarasmanymedicalcuresgothisisrelativelysimple.Asthecauseislackofbrightlight,thetreatmentistobeinbrightlighteveryday.Thiscanobviouslybeachievedbystayinginabrightlylitclimate,explainingwhyskiingholidaysaresopopularastheyallowpeopletogetplentyofsunlightaswellasprovidingastimulatingactivity.Anothermethodisbyusinglighttherapy,inwhichpatientssitinfrontofalampwhichactsinthesamewayassunlight.Tobemorespecific,thelightshouldbeaboutasbrightasearlymorningsunshine,andtheusershouldallowthelighttoreachtheeyesforanythinguptoonehouradayinordertoalleviatethesymptoms.Thereareanumberofcompaniescurrentlymanufacturingtheselightsasahealthaidandtheyareevenbeingprescribedbysomedoctors.Inaddition,theycanbeboughtatconsiderablylessthanthecostofaholiday.G.Whateverfundamentalreasonunderpinsholidaydepression,itseemsreasonabletoarguethatthephenomenondoesindeedexist.Voluntarysupportservices,offeringcounselingservicestothosewhoneedtheunbiasedandfriendlyvoiceofastrangertohelpthemworkthroughtheirunhappinessreportasignificantincreaseddemandfortheirservicesduringholidayperiodssuchasChristmasandtheNewYear.Questions1–2CirclethecorrectanswerA–C1.Researchhasshownthat__________________.A.webecomemoredepressedduringtheholidaysB.poordietcanleadtodepressionC.simplethingscanleadustofeelvaryingdegreesofdepression.2.DrPittmanbelievesholidaydepressioncomesfrom_____________.A.feelingsofinadequacyB.beingaloneC.over-compensation.Questions3–6AREDELETED.Questions7–11ChoosethemostsuitableheadingsforsectionsB–Ffromthelistbelow.Useeachheadingonceonly.I.FamilycuresII.AddressingtheproblemIII.ImpactofpersonalityIV.PsychologicalfactorsV.BiologicalfactorsVI.AvoidingstressVII.ManifestationsofdepressionVIII.DepressioninchildrenIX.PressuresoftheholidayperiodParagraphB:ParagraphC:ParagraphD:ParagraphE:ParagraphF:

如果ξ与η不相关，则（）。 A: D（ξ+η）=Dξ+Dη B: D（ξ-η）=Dξ-Dη C: D（ξη）=Dξ·Dη D: E（ξη）=Dξ·Dη

已有定义intd=-2;，执行以下语句后的输出结果是：printf('*d(1)=%d*d(2)=%3d*d(3)=%-3d* ',d,d,d,d);printf('*d(4)=%o*d(5)=%7o*d(6)=%-7o* ',d,d,d,d);printf('*d(4)=%x*d(5)=%6x*d(6)=%-6x* ',d,d,d,d);

圆柱螺旋弹簧的旋绕比C是（） A: d/D B: d/D C: D/d D: D/d

已有定义int d= –2；执行以下语句后的输出结果是。 printf(" * d(1) =%d * d(2)= %3d * d(3) =% –3d * "，d，d，d)； printf(" * d(4) =%d * d(5)= %7d * d(6) =% –7d * "，d，d，d)；

若有说明语句：int a，b，c，* d＝＆c；，则能正确从键盘读入三个整数分别赋给变量a、b、d的语句是 ( ) A．scanf("%d%d%d"，＆a，＆b，d)； B．scanf("%d%d%d"，＆a，＆b，＆d)； C．scanf("%d %d%d"，a，b，d)； D．scanf("%d%d%d"，a，b，* d)；

如果要用JK触发器来实现D触发器的功能，则J=( )，K=( )。 A: D;D' B: D;D C: D';D' D: D;D

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下列字符之间的大小关系 A: 0>;D>;d B: d>;D>;0 C: D>;0>;d D: d>;0>;D

互换行列式 $D$ 的两行（列）得到行列式 $D'$，则有（ ）. A: $D'=D$ B: $D'=2D$ C: $D'=-D$ D: $D'=0$