12.Whatcanwelearnfromparagraph2?A.Hybridcarsdon’tneedpetrolanymore.B.Petrolengineandelectricmotorworkalltheway.C.Hybridcarsmainlydependonelectricpowertorun.D.Somehybridcarpetrolengineswillquitwhenunnecessary.13.WhichisNOTthereasonwhyhybridcarsconsumelessenergy?,A.Smallerpetrolengines.B.Scientificdesign.C.Conventionalbrakes.D.Energystorage.14.Whatcanweinferfromthelastparagraph?A.Hybridcarsarecheapertobuy.B.Hybridcarownersdon'thavetopaytax.C.Hybridcarownersdon'tneedtopayparkingfee,D.Hybridcarswillhaveabrightfuture.15.What’stheauthor'spurposeofwritingthepassage?A.Toadvertisehybridcars.B.Tointroducehybridcars.C.Tocompareconventionalcarsandhybridcars.D.Toinformthedevelopmentofhybridcars.