题目内容：
根据以下材料，回答题ThenorthernpartsoftheUnitedStatesgetverycoldinthewinter.Itsnowsagreatdealandthetemperatureoftengoes21zerodegreeinJanuary,22andMarch.Butthenortheastemandnorthcentralregionsof23havebeenfinancialandindustrialcenters,andtheyareheavilypolluted.
Inrecentyears,peopleintheseregionshavebeguntotakevacations24thesecoldwintermonths.Theygotosouthempartsofthecountry25itiswarmer.ManygotoFloridawheretheweatheris_26.'OthersgotothesouthwestemstatesofArizona,NewMexicoandTexaswherethey_27drydesertclimates.
Ithasbecome28nowadaysforoldpeopletomovesouthtotheseplaces29theyretire.Typicallythesepeopleselltheirhousesintheirhomecommunitiesandmovesouthtobeginanewlife30seniorcitizens.
Theirchildrenlikelyhavehomes31_andmanyofthemaremovingsouth32communities
wheretheywere33.Thesouthernandsouthwestempartsofthecountryarenowgrowing34anyotherpart.Businessandindustry35manyofficesandfactoriesinthesouth.Californiaisalreadythemostpopularstateinthecountry.
A．below
B．above
C．near
D．over
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