Americaisamobilesociety.FriendshipsbetweenAmericanscanbecloseandrealyetdisappearsoonifsituationschange.ThiscanbequitedifficultforusChinesetounderstandbecausefriendshipsbetweenusflowermoreslowlybutthenmaybecomelifelongfeelingsextending(延伸)sometimesdeeplyintobothfamilies.Americansarereadytoreceiveusforeignersattheirhomessharetheirholidaysandtheirhomelife.Theywillenjoywelcomingusandbepleasedifweaccepttheirhospitality(好客)easily.AnotherdifficultpointforusChinesetounderstandAmericansisthatalthoughtheyincludeuswarmlyintheirpersonaleverydaylivestheydon’tshowtheirpolitenesstousifitrequiresagreatdealoftime.Thisisusuallytheoppositeofthepracticeinourcountrywherewemaybegenerouswithourtime.Sometimesweashostswillappearatairportseveninthemiddleofthenighttomeetafriend.Wemaytakedaysofftoactasguidestoourforeignfriends.TheAmericanshoweverexpresstheirwelcomeusuallyathomesbuttrulycannotmanagethetimetodoagreatdealwithavisitoroutsidetheirdailyroutine.Theywillprobablyexpectustogetourselvesfromtheairporttoourownhotelbybus.Andtheyexpectthatwewillphonethemfromthere.Oncewearriveattheirhomesthewelcomewillbefullwarmandreal.Wewillfindourselvestreatedhospitably.FortheAmericansitisoftenconsideredmorefriendlytoinviteafriendtotheirhomesthantogotorestaurantsexceptforpurelybusinessmatters.Soaccepttheirhospitalityathome!29．Thewriterofthispassagemustbe______.A．anAmerican B．aChineseC．aprofessor D．astudent30．WhenwearriveinAmericatovisitanAmericanfriendwewillprobablybe______.A．warmlywelcomedattheairport B．offeredaridetohishomeC．treatedhospitablyathishome D．treatedtodinnerinarestaurant31．Theunderlinedwords “generouswithourtime”inParagraph3probablymean______.A．strictwithtime B．seriouswithtimeC．carefulwithtime D．willingtospendtime32．Asuitabletitleforthispassagewouldprobablybe“______”.A．FriendshipsbetweenChinese B．FriendshipsbetweenAmericansC．Americans’hospitality D．Americans’andChinese’sviewsoffriendship