2017考研英语一真题及答案解析

2017年考研英语一试题及答案解析SectionⅠUseofEnglishDirections:Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDontheANSWERSHEET.(10points)Couldahugadaykeepthedoctoraway?Theanswermaybearesoundingyes!_____（1）helpingyoufeelcloseand_____（2）topeopleyoucareabout,itturnsoutthathugscanbringa_____（3）ofhealthbenefitstoyourbodyandmind.Believeitornot,awarmembracemightevenhelpyou_____（4）gettingsickthiswinter.Inarecentstudy_____（5）over400healthyadults,researchersfromCarnegieMellonUniversityinPennsylvaniaexaminedtheeffectsofperceivedsocialsupportandthereceiptofhugs_____（6）theparticipants'susceptibilitytodevelopingthecommoncoldafterbeing_____（7）tothevirus.Peoplewhoperceivedgreatersocialsupportwerelesslikelytocome_____（8）withacold,andtheresearchers_____（9）thatthestress-reducingeffectsofhugging_____（10）about32percentofthatbeneficialeffect._____（11）amongthosewhogotacold,theoneswhofeltgreatersocialsupportandreceivedmorefrequenthugshadlesssevere_____（12）.Huggingprotectspeoplewhoareunderstressfromthe_____（13）riskforcoldsthat'susually_____（14）withstress,notesSheldonCohen,aprofessorofpsychologyatCarnegie,Huggingisamarkerofintimacyandhelp_____（15）thefeelingthatothersaretheretohelp_____（16）difficulty.Someexperts_____（17）thestress-reducing,health-relatedbenefitsofhuggingtothereleaseofoxytocin,oftencalledthebondinghormone_____（18）itpromotesattachmentinrelationships,includingthatbetweenmothersandtheirnewbornbabies.Oxytocinismadeprimarilyinthecentrallowerpartofthebrain,andsomeofitisreleasedintothebloodstream.Butsomeofit_____（19）inthebrain,whereit_____（20）mood,behaviorandphysiology.1.A．BesidesB．UnlikeC．ThroughoutD．Despite2.A．equalB．restrictedC．connectedD．inferior3.A．viewB．hostC．lessonD．choice4.A．avoidB．forgetC．recallD．keep5.A．collectingB．affectingC．guidingD．involving6.A．onB．inC．atD．of7.A．devotedB．attractedC．lostD．exposed8.A．alongB．acrossC．downD．out9.A．imaginedB．deniedC．doubtedD．calculated10.A．servedB．restoredC．explainedD．required11.A．ThusB．StillC．RatherD．Even12.A．defeatsB．symptomsC．errorsD．tests13.A．highlightedB．increasedC．controlledD．minimized14.A．presentedB．equippedC．associatedD．compared15.A．assessB．generateC．moderateD．record16.A．inthenameofB．intheformofC．inthefaceofD．inthewayof17.A．attributeB．commitC．transferD．return18.A．unlessB．becauseC．thoughD．until19.A．remainsB．emergesC．vanishesD．decreases20.A．experiencesB．combinesC．justifiesD．influencesSectionⅡReadingComprehensionPartADirections:Readthefollowingfourtexts.AnswerthequestionsbeloweachtextbychoosingA,B,CorD.MarkyouranswersontheANSWERSHEET.（40points）Text1Firsttwohours,nowthreehours—thisishowfarinadvanceauthoritiesarerecommendingpeopleshowuptocatchadomesticflight,atleastatsomemajorU.S.airportswithincreasinglymassivesecuritylines.Americansarewillingtotoleratetime-consumingsecurityprotocolsinreturnforincreasedsafety.ThecrashofEgyptAirFlight804,whichterroristsmayhavedownedovertheMediterraneanSea,providesanothertragicreminderofwhy.Butdemandingtoomuchofairtravelersorprovidingtoolittlesecurityinreturnunderminespublicsupportfortheprocess.Anditshould:WastedtimeisadragonAmericans'economicandprivatelives,nottomentioninfuriating.Lastyear,theTransportationSecurityAdministration(TSA)foundinasecretcheckthatundercoverinvestigatorswereabletosneakweapons—bothfakeandreal—pastairportsecuritynearlyeverytimetheytried.Enhancedsecuritymeasuressincethen,combinedwithariseinairlinetravelduetotheimprovingeconomyandlowoilprices,haveresultedinlongwaitsatmajorairportssuchasChicago'sO'HareInternational.Itisnotyetclearhowmuchmoreeffectiveairlinesecurityhasbecome—butthelinesareobvious.Partoftheissueisthatthegovernmentdidnotanticipatethesteepincreaseinairlinetravel,sotheTSAisnowrushingtogetnewscreenersontheline.Partoftheissueisthatairportshaveonlysomuchroomforscreeninglanes.Anotherfactormaybethatmorepeoplearetryingtooverpacktheircarry-onbagstoavoidchecked-baggagefees,thoughtheairlinesstronglydisputethis.ThereisonesteptheTSAcouldtakethatwouldnotrequireremodelingairportsorrushingtohire:EnrollmorepeopleinthePreCheckprogram.PreCheckissupposedtobeawin-winfortravelersandtheTSA.Passengerswhopassabackgroundcheckareeligibletouseexpeditedscreeninglanes.ThisallowstheTSAtofocusontravelerswhoarehigherrisk,savingtimeforeveryoneinvolved.TSAwantstoenroll25millionpeopleinPreCheck.Ithasnotgottenanywhereclosetothat,andonebigreasonisstickershock:Passengersmustpay$85everyfiveyearstoprocesstheirbackgroundchecks.Sincethebeginning,thispricetaghasbeenPreCheck'sfatalflaw.Upcomingreformsmightbringthepricetoamorereasonablelevel.ButCongressshouldlookintodoingsodirectly,byhelpingtofinancePreCheckenrollmentortocutcostsinotherways.TheTSAcannotcontinuedivertingresourcesintounderusedPreChecklaneswhilemostofthetravelingpublicsuffersinunnecessarylines.Itislongpasttimetomaketheprogramwork.21.ThecrashofEgyptAirFlight804ismentionedto[A]explainAmerican’stoleranceofcurrentsecuritychecks.[B]stresstheurgencytostrengthensecurityworldwide.[C]highlightthenecessityofupgradingmajorU.S.airports.[D]emphasizetheimportanceofprivacyprotection.22.Whichofthefol