[2015•海口改编]阅读回答问题阅读下面的短文，根据短文内容回答问题。
Todayanincreasingnumberofpeoplearealwayslookingattheirmobilephoneswiththeirheadsdown.Thesepeoplearecalledthe“Heads-downTribe(低头族)”Areyouaheads-downtribemember?Heads-downtribemembersnowcanbeseeneverywhere.
Moreandmoretrafficaccidentsarehappeningbecausemoredriversusemobilephoneswhentheyaredriving.Inordertomakedriverspaymoreattentiontodrivingsomenewtrafficruleshavebeenmade.ForexamplepeoplewhousemobilephoneswhiledrivinginTaiwanarefined(罚款). CardriversandmotorcyclistswhobreakthetrafficrulewillbefinedNT$3000andNT$1000respectively(分别地).
Aswecanseeaboveusingmobilephonesmaycauseaccidentsandevencostalotofmoney.Alsomoreandmoreinterestingandstrangefactshappentothe“Heads-downTribe”.Let'shavealookataninterestingTVreport.AmaninAmericakeptusinghismobilephoneonhiswayhome.Asaresultheknockedintoabiglostbear.Whenheliftedhiseyesfromthephonehewassoafraidthatheturnedaroundandranawayquickly.Anotherfactisthatwecanoftenseepeopleintherestauranteatingfacetofacebutlookingattheirownmobilephones.It'sstrangethattheydon’t talktotheoneswhositoppositetothemduringthemeal.Someofthemevenhavefuncommunicatingwithothersonthephone.
Mobilephonesarehelpfulandnecessarytoolsformodernlife.Aremobilephonesgoodorbad?Itdependsonhowpeopleusethem.Let'sbe“healthy” usersandtrytobethe“Heads-upTribe”.
31.Whatdoes“Heads-downTribe”mean?
32.Whymoreandmoretrafficaccidentsarehappeningtoday?
33.Howmuchwilladriverbefinedifhe/sheusesmobilephoneswhiledriving?
34.WhydidamaninAmericaknockintoabiglostbear?
35.Aremobilephoneshelpfulandnecessaryformodernlife?
