高考英语一轮复习构想 unit 3 inventors and inventions课时作业 新人教版选修

《高考英语一轮复习构想 unit 3 inventors and inventions课时作业 新人教版选修》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、为深入贯彻落实党的十九大精神和习近平总书记的重要指示精神，保障人民安居乐业、社会安定有序、国家长治久安、进一步巩固党的执政基础，束城镇深入贯彻全市扫黑除恶会议精神，强化措施，深入扎实开展扫黑除恶专项斗争　Unit3　InventorsandinventionsⅠ.阅读理解A(2017·广西重点高中考试)Weighingtoomuchcandamageyourhealth,andobesityisagrowingproblemforbothkidsandadultsaroundtheworld.Sleepmightbeoneanswertot

2、heproblem.Anewstudyhasfoundthatelementaryschoolstudentswhoslepttoolittleweremorelikelytogainpounds.Paststudieshaveshownalinkbetweensleepinglessandweighingmore,butscientistshavehadatoughtimedetermining“which_came_first,_the_chicken_or_the_egg，”saysJulieC.LumengoftheUniversi

3、tyofMichiganinAnnArbor.Inotherwords,ithasn'tbeenclearwhetherkidswhoweightoomuchhavetroublesleeping,orwhethersleepinglessleadstoweightgain.Bothscenarios(可能出现的情况)seemedequallypossible.Togetabetterideaofwhichcauseswhich,Lumengandhercolleaguesinterviewedtheparentsof785thirdgra

4、dersfromaroundtheUnitedStates.Theparentsansweredquestionsabouthowwelltheirkidssleptthatyear.Threeyearslater,theparentsansweredthesamequestions.Bysixthgrade,18percentofkidsinvolvedinthestudywereobese.Thescientistsfoundnorelationshipbetweenweightandthestudents'raceorgender.I

5、talsodidn'tmatterhowstricttheirparentswere,orwhethertheywereboysorgirls.Obesitystruckallofthesegroupsequally.Instead,sleepseemedtobethekeyfactor.Overthe3yearsofthestudy,thechildrenaveragedahealthy9.5hoursofsleepanight.Somekids,however,sleptalotmore－orless－thanothers.Forthe

6、sixthgraders,everyhourofsleepabovethe9.5houraveragewaslinkedtoa20percentlowerriskofbeingobese.Sleepappeareddoublyimportantforthethirdgraders.Everyextrahourofsleeptheygotwaslinkedtoa40percentdropinobesity.【解题导语】　本文是说明文。一项新的研究发现，睡眠过少的小学生更容易发胖。1．Whatdoestheunderlinedsentencei

7、nParagraph2imply?A.Scientistshavefoundtheexactcausesofchildren'sobesity.B.Thereisalwayssomethingdifficulttounderstandthroughtheory.C.Thecauseeffectrelationshipbetweenweightandsleepisn'tclear.D.Aperson'sweighthassomethingtodowiththeamountofhissleep.答案与解析：C　考查句意理解。画线句表示的字面意思

8、是“先有鸡还是先有蛋”，结合上下文的内容可知，文章引用这句话是为了表明“是睡眠少导致了肥胖还是肥胖导致了睡眠变少”这个问题还没有定论。下文的“Inotherwords,ithas