（课标通用）2018版高考英语大一轮复习 unit 4 pygmalion课时作业 新人教版选修8

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

2、epinglessandweighingmore，butscientistshavehadatoughtimedetermining“which_came_first，the_chicken_or_the_egg，”saysJulieC．LumengoftheUniversityofMichiganinAnnArbor.Inotherwords，ithasn'tbeenclearwhetherkidswhoweightoomuchhavetroublesleeping，orwhethersleepinglessleadstoweightgain

3、.Bothscenarios(可能出现的情况)seemedequallypossible.Togetabetterideaofwhichcauseswhich，Lumengandhercolleaguesinterviewedtheparentsof785thirdgradersfromaroundtheUnitedStates.Theparentsansweredquestionsabouthowwelltheirkidssleptthatyear.Threeyearslater，theparentsansweredthesamequesti

4、ons.Bysixthgrade,18percentofkidsinvolvedinthestudywereobese.Thescientistsfoundnorelationshipbetweenweightandthestudents'raceorgender.Italsodidn'tmatterhowstricttheirparentswere，orwhethertheywereboysorgirls.Obesitystruckallofthesegroupsequally.Instead，sleepseemedtobethekeyfac

5、tor.Overthe3yearsofthestudy，thechildrenaveragedahealthy9.5hoursofsleepanight.Somekids，however，sleptalotmore—orless—thanothers.Forthesixthgraders，everyhourofsleepabovethe9.5—houraverage—waslinkedtoa20percentlowerriskofbeingobese.Sleepappeareddoublyimportantforthethirdgraders.

6、Everyextrahourofsleeptheygotwaslinkedtoa40percentdropinobesity.1．WhatdoestheunderlinedsentenceinParagraph2imply?A．Scientistshavefoundtheexactcausesofchildren'sobesity.B．Thereisalwayssomethingdifficulttounderstandthroughtheory.C．Thecauseeffectrelationshipbetweenweightandsleep

7、isn'tclear.D．Aperson'sweighthassomethingtodowiththeamountofhissleep.2．Whatdidtheinterviewfindout?A．9.5hoursofsleepanightisenoughforchildren.B．Themoreachildsleeps，thehealthierhewillbe.C．Sixgradersneedmuchmoresleepthanthirdgraders.D．One'sraceorgenderhasnothingtodowithhisweight

8、.3．Howdoestheauthordevelopthepassage?A．Bylistingfigures.B．Bycomparingdiffer