Americancitiesaresimilartoothercitiesaroundtheworld;Ineverycountry.Citiesreflectthevaluesoftheculture.Americancitiesarechanging，justasAmericansocietyischanging.

AfterWolldWaⅡ,thepopulationofmostlargeAmericancitiesdecreased;bowever.ThepopulatonInomtheSunBeltcitiesincreased.LosAngelesandHoustonareeititwherepopulatfonshife（转移）toandfromtheoityreflectthechangingvaluesofAmoricansociety.Inthelate1940sandearly1950s,cityresidents（居民）becamewealthier.Theyhadmorechildrensotheyneededmorespace,Theymovedoutoftheirapartmentsinthecitytobuytheirownhomes.Theyboughthousesinthesuburbs（郊区）.

Nowthingsarechanging.Thechildrenofthepeoplewholeftthecitiesinthe1950sarenowadults.Many,unliketheirparents,wanttoliveinthecities.TheycontinuetomovetoSunBeltcitiesandolderonesoftheNortheastandMidwest.Manyyoungprofessionalsaremovingbackintocity.Theypreferthecitytotheburbsbecausetheirjobsarethere;ortheyjusenjoytheexcitementandpossibiithatthecityoffers.

his people shiftisbringingproblemsaswellasbenefits.Countlesspootpeople mustleave theirapartmentsinthecitybecausetheownerswanttosellthebuildingsormakeapartmentsforsaleinsteadofforrent.Inthe1950s,manypoorpeopledidnothaveenoughmoneytomovetothesuburbs;nowmanyofthesesamepeopledonothaveenoughmoneytostayinthecities.

Onlyafewyearsago,peoplethoughthattheolder Americancitiesweredying.Somecityresidentsnowseeabright, newfiture, Othersseeonlyproblemsandcomfielsthethingissuremanydyingcitiesarealiveagain.

1.Whatdoestheauthor thinkofcitiesallovertheworld?

A.Theyarealive. B.Theyarehopeless.

C.Theyaresimilar. D.Theyaredifferent.

2.WhydidAmericancityresidentswanttolivei