An air waybill has been effective ever since the moment when the consignor(or agent)and the carrier(or agent)give the signature after the waybill is filled.( )
【单选题】My grandfather smoked four packs of cigarettes a day since age 14 and lived until age 79. Therefore, smoking doesn’t seriously affect people’s health as most people believe.
【单选题】My grandfather smoked 4 packs of cigarettes a day since age 14 and leave until age 79. Therefore, smoking doesn't seriously affect people's health as most people believe.