【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。

点评：

做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案。推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据。

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【问题】 LovethewayyouwalkListencarefullytothefootsteps，andyouworkoutwhoiswalking.Thefeaturescommonlyusedtoidentifypeoplearefacesandfingerprints.Butthewaytheywalkisalsoagiveaway.Researchershaveusedvideocamerasandcomputerstoanalyzepeople'sgaits（步态）.Buttranslatingsu

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