课标通用2018版高考英语复习Unit4Pygmalion课时作业新人教版.docx

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1、Unit4PygmalionⅠ.阅读理解Weighingtoomuchcandamageyourhealth，andobesityisagrowingproblemforbothkidsandadultsaroundtheworld.Sleepmightbeoneanswertotheproblem.Anewstudyhasfoundthatelementaryschoolstudentswhoslepttoolittleweremorelikelytogainpounds.Paststudieshaveshownalinkbetweensleepinglessandweighingm

2、ore，butscientistshavehadatoughtimedetermining“which_came_first，the_chicken_or_the_egg，”saysJulieC．LumengoftheUniversityofMichiganinAnnArbor.Inotherwords，ithasn'tbeenclearwhetherkidswhoweightoomuchhavetroublesleeping，orwhethersleepinglessleadstoweightgain.Bothscenarios(可能出现的情况)seemedequallypossib

3、le.Togetabetterideaofwhichcauseswhich，Lumengandhercolleaguesinterviewedtheparentsof785thirdgradersfromaroundtheUnitedStates.Theparentsansweredquestionsabouthowwelltheirkidssleptthatyear.Threeyearslater，theparentsansweredthesamequestions.Bysixthgrade,18percentofkidsinvolvedinthestudywereobese.The

4、scientistsfoundnorelationshipbetweenweightandthestudents'raceorgender.Italsodidn'tmatterhowstricttheirparentswere，orwhethertheywereboysorgirls.Obesitystruckallofthesegroupsequally.Instead，sleepseemedtobethekeyfactor.Overthe3yearsofthestudy，thechildrenaveragedahealthy9.5hoursofsleepanight.Somekid

5、s，however，sleptalotmore—orless—thanothers.Forthesixthgraders，everyhourofsleepabovethe9.5—houraverage—waslinkedtoa20percentlowerriskofbeingobese.Sleepappeareddoublyimportantforthethirdgraders.Everyextrahourofsleeptheygotwaslinkedtoa40percentdropinobesity.1．WhatdoestheunderlinedsentenceinParagraph

6、2imply?A．Scientistshavefoundtheexactcausesofchildren'sobesity.B．Thereisalwayssomethingdifficulttounderstandthroughtheory.C．Thecauseeffectrelationshipbetweenweightandsleepisn'tclear.D．Aperson'sweighthassomethingtodowiththeamountofhissleep.2．Whatdidtheinterviewfindout?A．9.5hoursofsleepanightisenou

7、ghforchildren.B．Themoreachildsleeps，thehealthierhewillbe.C．Sixgradersneedmuchmoresleepthanthirdgraders.D．One'sraceorgenderhasnothingtodowithhisweight.3．Howdoestheauthordevelopthepassage?A．Bylistingfigures.B．Bycomparingdiffer