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1、专题十四 科普知识类阅读+完形填空+短文改错Ⅰ.阅读理解A(2018吉林长春二模)Sleeprepairsthebodyandthemindandhelpspreventdiseasebystrengtheningtheimmunesystem.However,manyadultsdonotgeteighthoursofsleepeachnight.Theaveragesleeptimeanadulttodaygetsisonly6.4hours.Onlyinrecentyearshavehealthprofession
2、alsbeguntorealizetheseriousnessofsleepdeprivationintheworkingpopulation.Asignificantnumberofpeopleworkatnight,worklonghours,orsufferfromsleeplessnessorjetlag.Studiesshowthatthebrainisnegativelyaffectedbysleepdeprivationbecausecertainpatternsofelectricalandchemica
3、lactivitythatoccurduringsleepareinterruptedandthebraincannotfunctionnormally.Inonestudy,thirteenhealthyadultsubjects(实验对象)whousuallyhadnormalsleeppatternswerekeptawakeandcarefullymonitoredinalabduringaperiodof35hours.Duringtheexperiment,thesubjectswereaskedtoperf
4、ormseveraltasks,suchasmathematicsandwordproblems,whileundergoingscansoftheirbrainactivity.Theresearchersfoundthatthetemporallobe(颞叶)ofthebrain,theregioninvolvedinlanguageprocessing,wasactiveduringspeechtasksinrestedsubjectsbutnotinsubjectswholackedenoughsleep.Aft
5、erseveralhourswithoutsleep,therewasnoactivitywithinthisregion.Severalstudiesshowthatgettingfewerthansixhoursofsleepcandamageshort-termmemoryandreactiontime—thuscausingaseriousriskofaccident.Inonestudyofdrivers,researchersreportedthatsleepdeprivationhadthesameeffe
6、ctsasbeingdrunk.Theyfoundthatpeoplewhodroveafterbeingawakefor17hoursperformedworsethanthosewithabloodalcohollevelof0.5percent,thelegallimitfordrunkdrivinginmostwesternEuropeancountries.Theresearchersconcludedthatcountrieswithdrunkdrivinglawsshouldconsidersimilarr
7、estrictionsagainstsleep-depriveddriving.【语篇解读】本文介绍缺少睡眠给人带来的影响。研究表明睡眠剥夺对大脑活动有不利的影响,它和醉酒有同样的危险性。1.Whatdoestheunderlinedword“deprivation”inthefirstparagraphmean? A.Weakness.B.Loss.C.Discomfort.D.Pain.答案B解析词义猜测题。根据第一段中“Onlyinrecentyearshavehealthprofession
8、alsbeguntorealizetheseriousnessofsleepdeprivationintheworkingpopulation.”的关键词seriousness“严重”,可知是缺觉带来的严重性。画线词的意思是“缺少,损失”,故选B项。2.Thepassagementionsallofthefollow