1.ForanincreasingnumberofstudentsatAmericanuniversities,oldissuddenlyin.2.Coupledwiththeagingofthebaby-boom（生育高峰）generation,alonglifespanmeansthatthenation’selderlypopulationissuretoincreasegreatlyoverthenext50years.

3.“AnystudentwhocombinesanexpertknowledgeingerontologywithanMBAorlawdegreewillhavealicensetoprintmoney,”

求这三句翻译,

全文：

ForanincreasingnumberofstudentsatAmericanuniversities,oldissuddenlyin.Thereasonisobvious:ThegrayingofAmericameansjobs.Coupledwiththeagingofthebaby-boom（生育高峰）generation,alonglifespanmeansthatthenation’selderlypopulationissuretoincreasegreatlyoverthenext50years.By2050,25percentofallAmericanswillbeolderthan65,upfrom14percentin1995.

Thechangebringsbigproblemsforgovernmentandsociety,ofcourse.Butitalsocreatescareeropportunitiesinmedicineandhealthprofessions,andinlawandbusinessaswell.“Inadditiontothedoctors,we’regoingtoneedmoresociologists,biologists,urbanplannersandspecializedlawyers,”saysProfessorEdwardSchneideroftheUniversityofSouthernCalifornia’s（USC）SchoolofGerontology（老年学）.

Lawyerscanspecializein“ElderLaw”,whichcoverseverythingfromtrustsandestatestonursing-homeabuseandagediscrimination.Businessmenseehugeopportunitiesintheeldermarket.“AnystudentwhocombinesanexpertknowledgeingerontologywithanMBAorlawdegreewillhavealicensetoprintmoney,”oneprofessorsays.

MargarineSantosisa21-year-oldsenioratUSC.Shebegancollegeasabiologymajorbutfoundshewas“reallyboredwithbacteria”.Soshetookaclassingerontologyanddiscoveredthatshelikedit.Shesays,“Ididvolunteerworkinretirementhomesanditwasverysatisfying.”