____ 是 PKI 体系中最基本的元素, PKI 系统所有的安全操作都是通过该机制采实 现的。
D
暂无解析
Passage2
Questions6to10arebasedonthefollowingpassage:
Therearetwokindsofmemory:shot-termandlong-term.Informationinlong-termmemorycanberememberedatalatertimewhenitisneeded.Theinformationmaybekeptfordaysorweeks.However,informationoverandover.Thefollowingexperimentshowshowshort-termmemoryhasbeenstudied.
HenningstudiedhowstudentswhoarelearningEnglishasasecondlanguageremembervocabulary.Thesubjectsinhisexperimentwere75collegestudents.TheyrepresentedalllevelsofabilityinEnglish:beginning,intermediate,andnative-speakingstudents.
Tobegin,thesubjectslistenedtoarecordingofanativespeakerreadingaparagraphinEnglish.Followingtherecording,thesubjectstooka15-questiontesttoseewhichwordstheyremembered,eachquestionhadfourchoices.Thesubjectshadtocirclethewordtheyhadheardintherecording.Someofthequestionshadfourchoicesthatsoundalike.Forexample,weather,whether,wither,andwetterarefourwordsthatsoundalike.Someofthequestionshadfourchoicesthathavethesamemeaning.Method,way,manner,andsystemwouldbefourwordswiththesamemeaning.Finallythesubjectstookalanguageproficiencytest.
HenningfoundthatstudentswithalowerproficiencyinEnglishmademoreoftheirmistakesonwordsthatsoundalike;studentswithahigherproficiencymademoreoftheirmistakesonwordsthathavethesamemeaning.Henning’sresultssuggestthatbeginningstudentsholdthesoundofwordsintheirshort-termmemory,andadvancedstudentsholdthemeaningofwordsintheirshort-termmemory.
6.Henningmadetheexperimentinordertostudy.
A.howstudentsrememberEnglishvocabularybyshort-termmemory
B.howstudentslearnEnglishvocabulary
C.howtodevelopstudents’abilityinEnglish
D.howlonginformationinshort-termmemoryiskept
7.WhichofthefollowingstatementsisTRUEaccordingtothepassage?
A.Informationinshort-termmemoryisdifferentfromthatinlong-termmemory.
B.Long-termmemorycanbeachievedonlybytraining.
C.Itiseasiertotestshort-termmemorythanlong-termmemory.
D.Henninggaveaseparatetestonvocabularytohisstudents.
8.FromHenning’sresultwecanseethat.
A.beginnershavedifficultydistinguishingthepronunciationofwords
B.advancedstudentsrememberwordsbytheirmeaning
C.itisdifficulttorememberwordsthatsoundalike
D.itisdifficulttorememberwordsthathavethesamemeaning
9.Theword“subjects”inthepassagemeans.
A.memoryB.thethemeoflisteningmaterial
C.abranchofknowledgestudiedD.thestudentsexperimentedon
PartIVTranslation
Thepersonalservicetheyprovideissodeep-rootedinJapanthattheyarelikelytooperatealongsidetheglitteringnewshowrooms.(PassageThree)
Directions:
Inthissection,youwillheartwopassages.Attheendofeachpassage,youwillhearsomequestions.Boththepassageandthequestionsmwillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA,B,CandD.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.PassageOneQuestions9to12arebasedonthepassageyouhavejustheard.
9、A.Sheescapedunhurt.
B.Shewitnessedtheshooting.
C.Shewasshottodeath.
D.Shewas15yearsold.
10、A.5.B.7.C.11.D.12.
11、A.Spear'sdigitalcamera.
B.Onesuspect'sgun.
C.Thequeen'svideo.
D.Berry'spurse.
12、A.Civiliansshouldkeepawayfromthebusinesszone.
B.Everybodyshouldthinkabouthowtofightagainstcrimes.
C.Governmentshouldscheduletonegotiatewithterrorists.
D.Peopleshouldemigratebecauseofdomestichighcrimerate.PassageTwo
Questions13to15arebasedonthepassageyouhavejustheard.
13、A.Increasingsalaries.
B.Surgingenergyproduction.
C.Boominghousingmarket.
D.Risinginterestrates.
14、A.Increasinginterestrate.
B.Decreasingfinancialproducts.
C.Buyingsubstantialsecurities.
D.Expandingfinancialbusiness.
15、A.Frackingcaninfluencetheburningoffossilfuels.
B.Theuseoffrackingwilldoharmtoenvironment.
C.Frackingtechnologyisasafepracticeinindustry.
D.Theuseoffrackingisbeneficialtopeople'shealth.
_____forthefactthatshebrokeherleg,shemighthavepassedtheexam.