Whencouplesgetmarried，theyusuallyplantohavechildren．Sometimes，however，acouplecannothaveachildoftheirown．Inthiscase，theymaydecidetoadoptachild．Infact，adoptionisverycommontoday．Thereareabout60thousa

　　Whencouplesgetmarried，theyusuallyplantohavechildren．Sometimes，however，acouplecannothaveachildoftheirown．Inthiscase，theymaydecidetoadoptachild．Infact，adoptionisverycommontoday．Thereareabout60thousandadoptionseachyearintheUnitedStatesalone．Somepeopleprefertoadoptinfants，othersadoptolderchildren，somecouplesadoptchildrenfromtheirowncountries，andothersadoptchildrenfromforeigncountries．Inanycase，theyalladoptchildrenforthesamereason---theycareaboutchildrenandwanttogivetheiradoptedchildahappylife．

　　Mostadoptedchildrenknowthattheyareadopted．Psychologistsandchild-careexpertsgenerallythinkthisisagoodidea．However，manyadoptedchildren，oradoptees，haveverylittleinformationabouttheirbiologicalparents．Asamatteroffact，itisoftenverydifficultforadopteestofindoutabouttheirbirthparentsbecausethebirthrecordsofmostadopteesareusuallysealed．Theinformationissecretsonoonecanseeit．Naturally，adoptedchildrenhavedifferentfeelingsabouttheirbirthparents．Manyadopteeswanttosearchforthem，butothersdonot．Thedecisiontosearchforbirthparentsisadifficultonetomake．Mostadopteeshavemixedfeelingsaboutfindingtheirbiologicalparents．Eventhoughadopteesdonotknowabouttheirnaturalparents，theydoknowthattheiradoptedparentswantthem，lovethemandwillcareforthem．

　　71．Accordingtothepassage，somecouplesadoptchildrenbecause___

　　A．Theycarealotaboutchildren．

　　B．Theyneedlookingafterintheiroldage．

　　C．Theywanttoenrichtheirlifeexperience．

　　D．Theywantchildrentokeepthemcompany．

　　72．Whyisitdifficultforadopteestofindoutabouttheirbirthparents？___

　　A．Theyareusuallyadoptedfromdistantplaces．

　　B．Theirbirthparentsoftentrytoconceal（隐藏）theirbirthinformation．

　　C．Theirbirthinformationisusuallykeptsecret．

　　D．Theiradoptiveparentsdon'twantthemtoknowtheirbirthparents．

　　73．Adopteesfindithardtomakethedecisiontosearchfortheirbirthparents，because___

　　A．Theygenerallyholdbadfeelingstowardstheirbirthparents．

　　B．Theydonotwanttohurtthefeelingsofthe