2023-2024学年北师大版（2019）必修第三册Unit8Greenliving单元复习同步练习（有解析）.docx

Unit8GreenLiving一、阅读理解（本大题共15小题，共30.0分）AWeighingtoomuchcandamageyourhealth,andobesityisagrowingproblemforbothkidsandadultsaroundtheworld.Sleepmightbeoneanswertotheproblem.Anewstudyhasfoundthatelementaryschoolstudentswhoslepttoolittleweremorelikelytogainpounds.Paststudieshaveshownalinkbetweensleepinglessandweighingmore,butscientistshavehadatoughtimedetermining",saysJulieC.LumengoftheuniversityofMichiganinAnnArbor.Inotherwords,ithasn'tbeenclearwhetherkidswhoweightoomuchhavetroublesleeping,orwhethersleepinglessleadstoweightgain.Bothscenariosseemedequallypossible.Togetabetterideaofwhichcauseswhich,Lumengandhercolleaguesinterviewedtheparentsof785thirdgradersfromaroundtheUnitedStates.Theparentsansweredquestionsabouthowwelltheirkidssleptthatyear.Threeyearslater,theparentsansweredthesamequestions.Bysixthgrade,18percentofkidsinvolvedinthestudywereobese.Thescientistsfoundnorelationshipbetweenweightandthestudents'raceorgender.ltalsodidn'tmatterhowstricttheirparentswere,orwhethertheywereboysorgirls.Obesitystruckallofthesegroupsequally.Instead,sleepseemedtobethekeyfactor.Overthethreeyearsofstudy,thechildrenaveragedahealthy9.5hoursofsleepanight.Somekids,however,sleptalotmoreorlessthanothers.Forthesixthgraders,everyhourofsleepabovethe9.5houraveragewaslinkedtoa20percentlowerriskofbeingobese.Sleepappeareddoublyimportantforthethirdgraders.Everyextrahourofsleeptheygotwaslinkedtoa40percentdropinobesity.1. Whatdoestheunderlinedsentenceonparagraph2imply?A. Scientistshavefoundtheexactcausesofchildren'sobesity.B. ThereisalwayssomethingdifficulttounderstandthroughtheoryC. Thecause-effectrelationshipbetweenweightandsleepisn'tclear.D. Aperson'sweighthassomethingtodowiththeamountofhissleep.A. 9.5hoursofsleepanightisenoughforchildren.B. Themoreachildsleeps,thehealthierhewillbe.C. Sixthgradersneedmuchmoresleepthanthirdgraders.D. One,sraceorgenderhasnothingtodowithhisweight.3. Howdoestheauthordevelopthepassage?A.BylistingfiguresB.BycomparingdifferentopinionsC.ByprovidingexamplesD.Byconductingasurvey4. Whatisthesuitabletitlefbrthepassage?A. ThebenefitsofenoughsleepforchildrenB. SleepinglessincreasestheriskofobesityC. Whichcomesfirst,ittlesleeporobesityD. Howmanyhoursofsleepdochildrenneed?BHaveyoueverlostyourcaronaparkinglot?Ithappens.Youparkandgoshopping.Whenyougetback,youhavenoideawhereyourcaris.ltcanbediscouraging.Youdon'tneedtoinstall（安装）anexpensiveGPSsystemtokeeptrackofyourcar.That'stooexpensive.Youwouldneedtopayamonthlysubscriptionfeejusttouseit.Butisthereawaytotrackyourvehiclewithoutspendingafortune?Yes,nowthereis!ACalifornia-basedstart-upcompanywasabletomakethisareality.Theycreatedatinydevicethatworkswithyoursmartphone,anditcouldbeexactlywhatyou,relookingfbr!It'scalledTrackRBravoJfschangingthewaywekeeptrackoftheimportantthingsinourlives.InstallthefreeTrackRapponyoursmartphone,connecttheapptoyourdeviceandyou'rereadytogo!SimplyattachTrackRtowhateveryouwanttokeepaneyeon.Theentireprocessofsettingituponlytakes5minutesorless.Youcanattachittoyourkeys,walletandanythingelseyoudon'twanttolose.ThenusetheTrackRapptofindwhereyourmissingitemareinseconds.ForgetexpensiveGPSsystemsortrackingservices.Nobodywantstopayexpensivemonthlysubscriptionfees.Weunderstandhowstressfulthesethingscanbe,andthisisthereasonwhythecompanycreatedTrackR-ThisdeviceisyourVIPwhenyouneedtotakecareofimportantthings.Ifyouforgetwhereyouparkyourcar,takeoutyoursmartphoneandopentheTrackRapp.Taponthe"lostitem"signonthescreenandtheappwilltellyoutheexactlocation.Thisdeviceisbynomeansexpensive.TrackRonlycostsS29,asmallpricetopayforpeaceofmind.Thedeviceissmallenoughthatyoucanattachittoyourpets.Putitontheircollar,andyouwillneverlosetrackofthem!Attachittoyourkeyorwallet,andneverwasteaminutethewholehouseforit.Sinceyou'vebeeninformedaboutthisbilliantinvention,nowattachittoeverythingthat'simportanttoyou.5. WhydoestheauthormentionthelostcarinthefirstParagraph?A. Toexplainhowterriblethesituationis.B. Tostresstheimportanceofbeingcautious.C. Toleadtothetopicconcerningfindinglostitems.D. Toprovideonecommonexampleabouttheft.6. What'sthefeatureoftheTrackRapp?A. Theprocessofsettinguptheappiscomplex.B. Thecostofsettinguptheappisratherhigh.C. Theappisavailableinanyelectronicequipment.D. Theapphelpslocatethelostitemsinashorttime.7. TheTrackRwascreatedbecause.A. lifeisfullofallkindsofpressureB. trackingservicescausefinancialburdenC. peoplewanttokeeptheirimportantitemssafeD. GPSsystemscannotprovidespecificlocation8. Whichofthefollowingisclosesttothemeaningoftheunderlinedword"rummaging"inParagraph5?A.SearchingB.DestroyingC.CleaningD.MovingCOnJune17,1774,theofficialsfromMarylandandVirginiaheldatalkwiththeIndiansoftheSixNations.TheIndianswereinvitedtosendboystoWilliamandMaryCollegeJnaletterthenextdaytheyrefusedtheofferasfollows：Weknowthatyouhaveahighopinionofthekindoflearningtaughtinyourcolleges,andthatthecostsoflivingofouryoungmen,whilewithyou,wouldbeveryexpensivetoyou.Weareconvincedthatyoumeantod