题目内容：
根据以下材料，回答题Followingsomeofthetipsforgreenlivinghelpssaveourplanet.Alloftheseinvolvejustafewchangestoourdailyhabits.
Justwalkandlimittheuseofyourcar.Oneoftheposterimagesofpollutionisourvehicles.Itburnsfuel.Itisnotasefficientaswehopeitcouldbe,andweuseiteverysingleday.Tolessenthe
effectsoftheairpollutioncausedbyourvehicles,weshouldlimittheiruse.Ifwecanwalktoourdestinationthenjustletusgo.Notonlydowelessenourcarbondioxideemissions,butwealsoget
agoodexerciseoutofit.
Usealaptopinsteadofacomputerdesktop.Laptopsaremoreenergyefficientcomparedtotheirbiggercounterparts.Alaptopisgenerally50percentmoreefficientinusingelectricity.Asidefrom
thatthereareotherbenefitsofalaptop.Itisportablesoyoucanworkanywhereyoulikeandthatyougetpowerfulfeatureswithoutthelargesizeofdesktopunits.
Turnoffthefaucetwhileyouarebrushingyourteeth.Itisalwaysabetterideatouseaglasswhenwearebrushingourteethandnottojustletthefaucetkeeponrunning.Therefore,thereisless
watertowastewhilewearecleaningourpearlywhites.Simplyturnoffthefaucetwhenyouarenotusingit.
Makegooduseofnaturallight.Wehaveagreatandnaturallamp--thesun,andweshouldlearnhowtotakefulladvantageofitduringdaytime.Soinsteadofturningonourlightsorlampsevenifitisstillnotevening,weshouldpullupthedrapesandletthe
naturallightcomeinfromthewindows.
Thesearejustsomeofthebesttipsforgreenliving,butofcoursetherearestillmanyofthesetipsifyoujustsearchforthem.Butyoucandoyourownvariationanytimejustalwaysprioritizehow
youcanuselessenergyandproduceevenlessertrashandpollution.
What'sthebesttitleforthepassage? A．HowtoSaveOurPlanet
B．HowtoChangeOurDailyHabits
C．TipsforGreenLivingToday
D．GreenLivingandSeriousPollution
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答案解析：