2019版高考英语一轮复习Unit13People单元检测B-阅读理解提速练北师大版必修5

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1、Unit13单元检测B——阅读理解提速练Ⅰ.阅读理解A(2018·湖南省重点名校联考)Howmanyhoursofsleepdidyougetlastnight?Iftheanswerisnotenough,thenyoumighthaveahardertimerememberingsomethingfromyesterdaythanthosewhowerewellrested.Scientistshavelongknowntheadvantagesofagoodnight'ssleep,butanewstudyhasconfirmedtheoldwives'taleth

2、atsleepingonanideacanactuallymakeiteasytoapprehendit,assleepingisakeypartofthehumanlearningprocess.Bystudyingthesleepingpatternsofmice,ateamfromtheJohnHopkinsUniversitySchoolofMedicinefoundthatsleepallowsustoreadjustbraincells,solidifylessonslearnedandthenusethemwhenwewakeup.LeadauthorGra

3、hamDieringsaid,“Thehumanbraincanonlystoreacertainamountofinformationbeforeitneedstobereadjusted.Thebottomlineisthatsleepisnotreallydowntime(停工期)forthebrain.Ithasimportantworktodothen.”Whenweareawake,thesystemofneurons(神经元)ispushedtowardsfullabilityinabidtomakesenseoftheworldandeverythingw

4、earetakingin.Thisconstantfiringofneuronsmeanswewillloseourabilitytodevotebrainpowertomemory.Thenwhenweareasleep,thereisaprocessofreductiongoingon,whichcausesa20%dropinreceptorproteins(受体蛋白质)paredtothosewhoarestillawake.Anditisthisprocessofreductionthatgoesonwhenyouaresleepingthatisnecessa

5、ryforlearningandmemory.Itisn'ttheonlystudytoremindusofthevalueofrest.BackinSeptember,astudyshowedwhenwesleep,thebrainworkshardertoprocessthememorieswevaluemorehighly.Sostudyingbeforegoingtobedcanhelpyouremembermorethingsthanyoudointhemorning.语篇解读：本文是说明文。一项最新研究表明，充足的睡眠有益于记忆，人们在睡眠之前的记忆力处于最佳

6、状态。1．Whichofthefollowingcanreplacetheunderlinedword“apprehend”inParagraph2?A．Carryout.　　　　　　B．Dreamup.C．Accept.D．Understand.解析：选D　词义猜测题。根据该词后的“assleepingisakeypartofthehumanlearningprocess”可知，是更容易理解一个概念，故apprehend的意思和understand相近。2．Whenisourmemorygood?A．Whenournervoussystemisinactive.B．Wh

7、enweliewideawakeonthebed.C．Whenwebeesensitivetotheoutsideworld.D．Whenthelevelofreceptorproteinsisincreasing.解析：选A　细节理解题。根据第五段第一、二句可知，当人们清醒时，神经系统处于活跃状态，此时大脑的记忆能力就会减弱。由此可知，当我们的神经系统处于低迷状态时，大脑记忆力最好。3．What'stheauthor'spurposeinwritingthetext?A．Totellustheprocessofmemoriz