任务型阅读12篇有答案文档格式.docx

任务型阅读12篇有答案文档格式.docx

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Unlikeothertracedetectionsystemsonthemarket,whicharebasedonradioactive-sourceIonMobilitySpectrometrytechnologySDT'

sQCM-basedsystemcontainsnoradioactiveparts.

“IonMobilitySpectrometrysystemsareessentiallyradioactive,”Bengalsaid.Youneedspeciallicensingtosellthemandspeciallytrainedpersonneltoservicethem.Butwe’reusingessentiallygreentechnology.Youdon'

tneedtrainedtechnicianstooperateorevenopenourmachines.”

InthetwoyearssinceSDTbeganproducingtheMN2000forthehomelandsecuritymarket,thesystemhasdemonstrateditsabilitytooperateformonthsatatimewithoutservicingortechnicalrepairs.Bengalsaidthenewmilitarymodelwillbemuchstronger,asitwasdesignedtooperateindust,heavyfogandotherwiseextremefieldconditions.

DigitalNoseSniffsoutIEDS

Introduction

●Abackpack-carrieddigitalnoseisintendedto 

71 

theburdenofcheckpointdutyfortroopsstationedinhotspots.

●Itcandetectoridentifytheexplosivedevicesthat 

72 

people’slives.

73 

●Asecond-generationversionhasbeenputintopractical 

74 

inseveralcountries.

●TheHFQCMtechnologycanrecognizenewsubstancesby 

75 

mammalianolfactorysenses.Thesesubstances,which 

76 

thelengthoftheentireanalysisprocess,canbematchedwith 

77 

threatsprogrammedintothemachine.

●TheQCM-basedsystem 

78 

fromothertracedetectionsystemsinthatitcontainsnoradioactiveparts.

●Technicianscanoperateorevenopenthemachines 

79 

training.

Conclusion

Thenewmilitarymodelismorelikelyto 

80 

toseverefieldconditions

（二）

AmongthenaturalcreaturesthatcanpresentathreattopeopleinruralareasofMexico,oneofthemostproductiveisthescorpion（蝎子）.Theserelativesofspiderskilldozensofpeopleeachyearandinjurethousandsmore.However,scorpionshavebecomeapartofthelocalcultureandtradition.

IntheDurangocitymainmarket,scorpionsareinevidenceateveryturn.Therearebooks,keychainsandlampsdecoratedwithdeadscorpions.TherearescorpionimagesonT-shirtsandhatsandthereareevencandiesshapedlikescorpions.Thewholeplaceseemstobefilledwiththecrawlingcreature.

Inonecornerofthemarket,CheloGarciaevensellslivescorpions.Shesaysshehasexperiencedtwoscorpionstings（蛰）intherecentyearsandthatnothinghappened.Shesaysthatifapersonhasnosymptomsofpoisoningwith30minutesofthestinging,itislikelythatnothingbadwillresult.Shesayssomescorpionshavelittleornopoisonandsoluckplaysabigpart.

ItishardtoexplainwhypeoplecometoMs.Garcia’sstoretobuyliveones,butshedoesagoodbusiness.Sheoftenreachesdownthroughthetopoftheglasscagetocatchoneofthescorpionstoshowhercustomers.Sheholdsthembythetail,wherethebarbedstinger（刺针）islocated,sothatsheissafefromattack.

Inthecrowdedmarket,manypeoplepassbyMs.Garcia’sstoretolookatthecrawlingcreaturesandtorelatetheirownstoriesofencounterswiththescorpions.Oneoldwomansaysshenearlydiedwhenshewasagirlof18yearsoldandhasbeenafraidofscorpionseversince.Shesaidhertonguebecamenumbandherthroatbegantoswellshut,commonsymptomsofthescorpionpoison.ShesaysshesurvivedbecauseGodprotectedher.

EveryyearinMexicoabout200,000peoplearestungbyscorpions.Thenumberofannualdeathswasnearly300,till2015,butapublichealthcampaignandthewidespreadavailabilityofanti-poisonhascutthenumberofdeathstolessthan100ayear.ThestateofDurangoaloneaccountsfortenpercentofallthescorpionstingsinMexicoeachyear.

Whilethescorpionmayberegardedasdisgustingandhorriblebymanypeople,ithasalsobecomeabitofalocalmascot（吉祥物）inDurango.Peoplethereseemproudofthefactthattheircityisknownasthe“scorpioncapital”.

Scorpions:

PartofLocalCultureinMexico

● 

While（71） 

▲ 

byscorpions,peopleinruralareasofMexicoviewthemasapartofthelocalcultureandtradition.

Themainmarketofscorpions

Scorpionscanbeseenalmost（72） 

rangingfrombookstoT-shirtsandhats.

（73） 

scorpionsaresoldinGarcia’sstore,whohasbeenstungbyscorpionstwiceinrecentyears.

Garciaoftenshowsscorpionstohercustomersbyholdingtheirtails,becausethebarbedstingeris（74） 

inthescorpion’stail.

Thesituation 

ofscorpions’stings

（75） 

arethatifapersonfeelsnothingwrongwithin30minutesofthestinging,he/shewillsurvive.

Symptomsofthescorpionpoisonincludeanumbtongueanda 

（76） 

throat.

Withmuchattentiontopublichealth,peoplenowhaveeasy（77） 

toanti-poison,sothenumberofdeathshasdecreasedalot.

People’s

（78） 

towardsscorpions

Though（79） 

asdisgustingandhorrible,thescorpionhasbecomeabitofalocalmascotinDurango.

Peopletheretake（80） 

inthefactthattheircityisknownasthe“scorpioncapital”.

（三）

Socialsignature

Sowhatdidthedetaileddatathatwecollectedreveal?

Thisquestionisbestansweredintermsofacharacteristicthatwedecidedtocallthe“socialsignature”ofanindividual,andinparticularbylookingathowthis“socialsignature”changedovertime.Imagineoneofourparticipantsduringthefirstsix-monthobservationwindowcallsomepeopleveryfrequently,andothersonlyoccasionally,wherethepeoplecalledarelikelytoincluderelatives,closefriends,andmoredistantacquaintances.Ifwenowputthepeoplecalledbyourparticipant,withthepersonmostfrequentlycalledinfirstposition,thesecond-mostfrequentlycalledpersoninsecondposition,andsoon,thenwecanbuildaprofile（简况）ofhowtheparticipantallocatedcallsbetweenalloftheirdifferentsocialrelationships.Thisprofileisinfactwhatwecallthe“socialsignature,”anditreflectswhatfraction（部分）ofcallsagivenparticipantplacedtothepersontheycallmost,thefractionofcallstheparticipantplacedtothepersontheycallsecond-most,rightdowntotheleastfrequentlycalledperson.Sowhatwasthe“socialsignature”abletotellus?

First,letmedescribeageneralpropertythatappliedtothe“socialsignatures”ofallparticipants.Thenumberofpeoplethatparticipantscalledfrequently,withwhomtheyhadastrongrelationship,wascomparativelysmall.Wemayhavefiveclosefriendsand20acquaintances,butweareveryunlikelytohave20closefriendsandfiveacquaintances.Ifwelookatthe“socialsignature”ingreaterdetail,wefindthatthereweredifferencesbetweendifferentparticipants,sothatoneindividualmayhavehadthreeclosefriendsandanotherseven.Thatisinfactwhywechosetheterm“signature”. 

Perhapsmostinterestingly,ifwelookedatthe“socialsignature”ofagivenparticipantoverthethreeconsecutivesix-monthobservationwindows,wefoundthatitremainedquitestable.Itisworthtakingamomenttoreflectwhythisshouldbesurprising.Thesocialworldofourparticipantswasundergoingasignificanttransition,withchangesinbothcloseandlessclosefriendships.Bytheendofourstudy,theidentityofsomeoftheclosefriendsoftheparticipantshadchanged,andsotheserelationshipswerenowwithentirelydifferentindividuals,butthefractionofthecallsparticipantsplacedtoacounterpartalmostdidn’tchange.

Howcanweunderstandthepersistenceofanindividual’s“socialsignature”?

Thekeyisthatthepatternofoursocialrelationshipsisshapedbyanumberofcriticalconstraints（限制）.

•Time:

Thefirstverygeneralandquiteinescapableconstraintisthatweonlyhavealimitedamountoftimetomaintainsocialrelationships.

•EmotionalCapital:

Thesecondconstraintreflectsthefactthatastrongsocialrelationshiprequiresconsiderableemotionalinvestment,andourstockofemotionalcapitalislimited.

•CognitiveLimitations:

Thethirdconstraintisbiologicalinnature,andreflectsthefactthattheyalsolimitthesocialrelationships. 

Canthenewsocialtechnologiesthatareaccessiblesignificantlychangethethreefactorsthatwebelieveshapethepatternsofoursocialinteractions?

Basedonthebehaviorthatweobservedforourparticipants,atthispointIwouldtendtoanswerno.

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