完形填空之说明文说明文往往围绕一个问题从不同的侧面来加以说明，通常结构严谨，句子结构复杂，因此也是高考完形填空中较难理解的一种文体。高考说明文类完形填空一般有以下两种结构特点：1．纯说明文：文章围绕一个话题展开，通过不同的例子，从不同的侧面加以说明。有些说明文，开头便点明的话题，然后展开说明；有些说明文，先列举事实，然后在总结时点明话题。2．说明加叙述类：文章围绕一个话题，然后通过叙述具体故事来说明话题，最后可能会对话题再加以强调。ThepositionofchildreninAmericanfamilyandsocietyisnolongerwhatitusedtobe.The__36__familyincolonial(殖民时期的)NorthAmericawasmainlyconcernedwithsurvivaland__37__that，itsowneconomicprosperity.Thus，childrenwere__38__intermsoftheirproductivity(生产能力)，andtheyplayedtheroleofproducerquiteearly.__39__theyfulfilledthisrole，theirpositioninthefamilywasoneofsubordination(附属)．Withthe__40__ofthesociety，thepositionofchildreninthefamilyandinthesocietybecamemoreimportant.Inthecomplexandtechnologicalsociety__41__theUnitedStateshasbecome，each__42__mustfulfillanumberofpersonalandoccupational____43___andbeincontactwithmanyothermembers.____44__，viewingchildrenasnecessarymembersofsocietymeansthattheyare__45__moreaspeopleintheirownrightthanasthoseofsubordination.Thisacceptanceofchildrenas__46__participantsinthefamilyisreflectedinvariouslaws__47__therightsofchildrenandinthesocialandpublicwelfareprograms.Thisnew__48__ofchildrenandthefrequentcontactbetweenthemembersofsocietyhasalso__49__anincreasinginterestinchild­raisingtechniques.Peopletodayspendmuchtime__50__theproperwayto____51__children.Nowadays，thesocializationofthechildintheUnitedStatesisa__52__transaction(事务)betweenparentandchild__53__aone­way，parent­to­childtraining__54__.Asaconsequence，socializingchildrenand__55__withthemoveralongperiodoftimeisforparentsamixtureofpleasure，satisfaction，andproblems.36．A.poorB．ordinaryC．happyD．wealthy37．A.exceptB．forC．beyondD．through38．A.supportedB．receivedC．encouragedD．valued39．A.UntilB．AfterC．AlthoughD．When40．A.movementB．achievementC．developmentD．requirement41．A.thatB．whereC．whenD．what42．A.parentB．memberC．familyD．relative43．A.purposesB．promisesC．rolesD．tasks44．A.BesidesB．HoweverC．InsteadD．Therefore45．A.admiredB．regardedC．madeD．respected46．Awill