Carsarelotsoffun，buttheycouldalsobedangerous.Wehavetobe...
问题详情：Carsarelotsoffun，buttheycouldalsobehavetobecarefulwhenwedrivethemorrideinthem.It'salwaysagoodideatoputonyourseatbeltwhenyou'reina？Thinkaboutthisexample：Youputaneggonaskateboardandgiveitatheskat...