搜题，就来5TiKU.com题库【问题】 LovethewayyouwalkListencarefullytothefootsteps，andyouworkoutwhoiswalking.Thefeaturescommonlyusedtoidentifypeoplearefacesandfingerprints.Butthewaytheywalkisalsoagiveaway.Researchershaveusedvideocamerasandcomputerstoanalyzepeople'sgaits（步态）.Buttranslatingsu
LovethewayyouwalkListencarefullytothefootsteps，andyouworkoutwhoiswalking.Thefeaturescommonlyusedtoidentifypeoplearefacesandfingerprints.Butthewaytheywalkisalsoagiveaway.Researchershaveusedvideocamerasandcomputerstoanalyzepeople'sgaits（步态）.Buttranslatingsuchknowledgeintoapracticalidentificationsystemcanbetricky.Camerasareoftenvisible，requiregoodlightingandmayhavetheirviewblockedbyotherpeople.AteamledbyDr.OzanyanandDr.Scullyhavebeenlookingforabetterwaytorecognizegait.Theiranswer：pressure-sensitivemats.Suchmatsarenothingnew.Theyhavebeenpartofsecuritysystems.ButOzanyanandScullyuseacomplicatedversionthatcanrecordtheamountofpressureappliedindifferentplacesassomeonewallksacrossit.Theresearchersturntoanartificialintelligencesystemtorecognizesuchpatterns.Inastudyin2018，theytestedthesystemonadatabaseoffootstepsof127people.Theyfounditserrorrateinidentifyingwhowaswhowasamere0.7%.AndScullysayaevenwithoutadatabaseoffootsteps，thesystemcandeterminesomeone'ssexandasubject'sage.Oneapplicationofthemat-basedgait-recognitionsystemmightbeinhealthcare，particularlyfortheelderly.Amatplacedinnursinghomeoranoldperson'sownresidencecouldmonitorchangesinanindividual'sgaitthatindicatecertainillnesses.Thatwouldprovideearlywarningofsomeonebeingatgreaterriskoffallingover.Gaitanalysismightalsobeusedasasecuritymeasureintheworkplace，monitoringaccesstorestrictedareas，suchaspartsofmilitarybases，serverfarmsorlaboratoriesdealingwithdangerousmaterials.Perhapsthemostinterestinguseofthemats，though，wouldbeinpublicplaces，suchasairports.（1）WhatismainlytalkedaboutinParagraph2？______A.Researchequipment.B.Researchbackground.C.Researchassumptions.D.Researchfindings.（2）Whatisthematusedfor？______A.Collectingdata.B.Ensuringsafety.C.Determiningage.D.Analyzingpressure.（3）Whatmightthegait-recognitionsystembeappliedto？______A.Monitoringsecurityworkprogress.B.Detectingpotentialhealthproblems.C.Keepingtrackoftravellingfrequency.D.Warningpassengersofpossibledangers.（4）Whatisthemainpurposeofthepassage？______A.Tocomparedifferentwaystoidentifypeople.B.Toshowpeopletheimportanceoftechnology.C.Topersuadepeopletobuythemat.D.Toinformpeopleofsomethingaboutpressure-sensitivemats.
正确答案：（1）D．段落大意题。根据第二段内容Researchers have used video cameras and computers to analyze people's gaits，and are now quite good at it.But translating such knowledge into a practical identification system can be tricky.研究人员使用摄像机和计算机来分析人们的步态，现在已经非常擅长了。但是将这些知识转化为实际的识别系
题目解析：
本文是说明文，主要介绍了由英格兰曼彻斯特大学的Krikor Ozanyan和爱尔兰国立大学的Patricia Scully领导的团队一直在寻找一种更好的识别步态的方法--压敏垫。
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