2020版高考英语一轮复习课时提能练13（含解析）外研版

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1、课时提能练(十三)Ⅰ.阅读理解A(2019·长春质检)Canexerciseduringchildhoodprotectyouagainstmemorylossmanydecadeslater？Exerciseearlyinlifeseemstohavelifelongbenefitsforthebrain，inratsatleast.“Thisisananimalstudy，butitshowsthatphysicalactivityatayoungageisveryimportant—notjustforph

2、ysicaldevelopment，butforthewholelifelongtrackofcognitive(认知的)developmentduringaging，”saysMartinWojtowiczoftheUniversityofToronto，Canada.“Inhumans，itmaydelaytheappearanceofAlzheimer'sdisease(阿尔茨海默病)，possiblytothepointofpreventingit.”Wojtowicz'steamdivided80you

3、ngmaleratsintotwoequalgroups，andplacedrunningwheelsinthecagesofonegroupforaperiodofsixweeks.Aroundfourmonthslater—whentheratshadreachedmiddleage—theteamtaughtalltheratstoconnectanelectricshockwithbeinginaspecificbox.Whenplacedinthebox，theyfrozewithfear.Twowee

4、kslater，theteamtestedtheratsinthreesituations：exactlythesameboxinthesameroom，thesameboxwiththeroomarrangeddifferently，andacompletelydifferentboxinadifferentroom.Theratswithoutaccesstoarunningwheelwhentheywereyoungnowfrozethesamepercentageoftimesineachoftheses

5、ituations，suggestingtheycouldn'trememberwhichonewasdangerous.Butthosethathadbeenabletorunintheiryouthfroze40to50percentlessinbothchangedboxsettings.“Theresultssuggesttheamountofphysicalactivitywhenwe'reyoung，atleastforrats，hasinfluenceonthebrainandcognitivehe

6、alth—intheformofbettermemories—whenwe'reolder，”saysArthurKramerofNortheasternUniversityinBoston，whohasfoundthat，inhumans，exercisepromotesthegrowthofnewbraincells.【语篇解读】　本文为说明文，介绍了一项科学研究，从而得出早期锻炼对大脑终生有好处的结论。1．Thestudyshowsthat.A．physicalactivityisimportantforp

7、hysicalhealthB．usingtherunningwheelsisofbenefittotherats'growthC．physicalactivitycanpreventhumans'Alzheimer'sdiseaseD．themoreexercisearathaswhenyoung，thebettermemoryitwillpossesswhenolderD　[细节理解题。根据第一段内容尤其是第二句“Exerciseearlyinlifeseemstohavelifelongbenefitsfor

8、thebrain，inratsatleast”可知，早期锻炼似乎对大脑终生有好处，至少对老鼠来说是这样的。故选D项。]2．HowareParagraphs3and4mainlydeveloped?A．Byanalyzingcauses.B．Bygivinganexample.C．Bydescribingtheprocess.D．Byshowingdifferences.C