高中英语寒假作业阅读培优小卷：北京专用01 阅读培优小卷 (原卷版).pdfVIP

高一英语寒假作业阅读培优小卷

北京专用01

第一部分阅读理解（共两节，满分50分）

第一节（共15小题；每小题2.5分，满分37.5分）

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A

（2022春·北京·高一北京市陈经纶中学）

Lovethewayyouwalk

Listencarefullytothefootstepsinthefamilyhome,andyoucanprobablyworkoutwhoiswalkingabout.The

featuresmostcommonlyusedtoidentifypeoplearefaces,voicesandfingerprints.Butthewaytheywalkisalsoa

giveaway.

Researchershaveusedvideocamerasandcomputerstoanalyzepeople’sgaits,andarenowquitegoodatit.

Buttranslatingsuchknowledgeintoapracticalidentificationsystemcanbetricky.Camerasareoftenvisible,are

difficulttosetup,requiregoodlightingandmayhavetheirviewblockedbyotherpeople.AteamledbyDr.

OzanyanandDr.Scullyhavebeenlookingforabetterwaytorecognizegait.Theiranswer:pressure-sensitive

mats.

Suchmatsarenothingnew.Theyhavebeenapartofsecuritysystem.ButOzanyanandScullyuseacomplicated

versionthatcanrecordtheamountofpressureappliedindifferentpacesassomeonewalksacrossit.These

measurementsformapatternuniquetothewalker.Theresearchersturnedtoanartificial-intelligencesystemto

recognizesuchpatterns,anditseemedtowork.Inastudyin2018,theytestedthesystemonadatabaseoffootsteps

of127people.Theyfounditserrorrateinidentifyingwhowasamere0.7%.AndScullysaysevenwithouta

databaseoffootstepstoworkwith,thesystemcandeterminesome’ssexand,withreasonableaccuracy,asubject’s

age.

Oneapplicationofthemat-basedgait-recognitionsystemmightbeinhealthcare,particularlyfortheelderly.

Amatplacedinanursingh