题目内容

期望理论中队“效价”的正确理解是()

A. 既可以是精神的,也可以是物质的
B. 既可以是正的、负的,也可以是零的
C. 指各种效价的总称
D. 效价是指概率的大小

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据考古发现,我国陕西省半坡原始村落建在河谷阶地上,图甲为半坡原始村落复原模型,图乙为河谷阶地示意图。半坡原始村落选择建在河谷阶地上,考虑的主要因素有() ①接近水源 ②安全防卫 ③对外联系便利 ④地势较高,免受洪涝之害

A. ①②③
B. ②③④
C. ①③④
D. ①②④

在下图所示电路中,电源电压U=6V。若使电阻R上的电压U1=4V,则电阻R为()。

A. 2
B. 4
C. 6

Whichofthefollowingisnotadesignfeatureofhumanlanguage?()

Arbitrariness
B. Displacement
C. Duality
D. Meaningfulness

Questions11to15arebasedonthefollowingpassage.Scratchythroats,stuffynosesandbodyachesallspellmisery,butbeingabletotellifthecauseisacoldorflu(流感)maymakeadifferenceinhowlongthemiserylasts.TheAmericanLungAssociation(ALA)hasissuednewguidelinesoncombatingcoldsandtheflu,andoneofthekeysisbeingabletoquicklytellthetwoapart.That’sbecausetheprescriptiondrugsavailableforthefluneedtobetakensoonaftertheillnesssetsin.Asforcolds,thesoonerapersonstartstakingover-the-counterremedy,thesoonerreliefwillcome.Thecommoncoldandthefluarebothcausedbyviruses.Morethan200virusescancausecoldsymptoms,whilethefluiscausedbythreeviruses—fluA,BandC.Thereisnocureforeitherillness,buttheflucanbepreventedbythefluvaccine(疫苗),whichis,formostpeople,thebestwaytofighttheflu,accordingtotheALA.Butifthefludoesstrike,quickactioncanhelp.Althoughthefluandcommoncoldhavemanysimilarities,therearesomeobvioussignstolookfor.Coldsymptomssuchasstuffynose,runnynoseandscratchythroattypicallydevelopgradually,andadultsandteensoftendonotgetafever.Ontheotherhand,feverisoneofthecharacteristicfeaturesofthefluforallages.Andingeneral,flusymptomsincludingfeverandchills,sorethroatandbodyachescomeonsuddenlyandaremoreseverethancoldsymptoms.TheALAnotesthatitmaybeparticularlydifficulttotellwheninfantsandpreschoolagechildrenhavetheflu.Itadvisesparentstocallthedoctoriftheirsmallchildrenhaveflu-likesymptoms.Bothcoldandflusymptomscanbeeasedwithover-the-countermedicationsaswell.However,childrenandteenswithacoldorflushouldnottakeaspirinforpainreliefbecauseoftheriskofReyesyndrome(综合症),ararebutseriousconditionoftheliverandcentralnervoussystem.Thereis,ofcourse,novaccineforthecommoncold.Butfrequenthandwashingandavoidingclosecontactwithpeoplewhohavecoldscanreducethelikelihoodofcatchingone.Ifchildrenhaveflu-likesymptoms,theirparents()

A. areadvisednottogivethemaspirin
B. shouldwatchoutforsignsofReyesyndrome
C. areencouragedtotakethemtohospitalforvaccination
D. shouldpreventthemfrommixingwithpeoplerunningafever

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