transportation and communication networks bring people together.阅读理解答案

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1、Transportationandcommunicationnetworksbringpeopletogether.阅读理解答案　　Transportationandcommunicationnetworksbringpeopletogether.Yetsometimespeoplethemselvescreatebarriers(障碍)totransportationandcommunication.Insomecountries,lawsstoppeoplefrommovingfreelyfromplacetoplace.Overthecenturies,manygr

2、oupsofpeoplehavebeendeniedthefreedomtotravelbecauseoftheirrace,religion,ornationality.IntheMiddleAges,forexample,Jewswereoftenforbiddentomoveaboutfreelywithincertaincities.SouthAfrica’sgovernmentusedtorequireblackAfricanstocarrypasseswhentheytravelwithinthecountry.Somegovernmentsrequireal

3、lcitizenstocarryidentificationpapersandtoreporttogovernmentofficialswhenevertheymove.　　Countriessetupcustomspostsattheirborders.Foreigntravellersmustgothroughacustomsinspectionbeforetheyareallowedtotravelinthecountry.Usuallytravellershavetocarryspecialpaperssuchaspassportsandvisas(签证).Som

4、ecountriesevenlimitthenumberofvisitorstotheircountryeachyear.Othersallowtouriststovisitonlycertainareasofthecountry,ortheymayrequirethattravellersbewithanofficialguideatalltimesduringtheirstay.　　Manyofthosebarrierstotravelalsoactasbarrierstocommunication.　　Whentwogovernmentsdisagreewithea

5、chotheronimportantmatters,theyusuallydonotwanttheircitizenstoexchangenewsorideasfreely.Countriesoftentrytokeepmilitaryorindustrialinformationsecret.　　Today,peoplehavetheabilitytotravel,tocommunicate,andtotransportgoodsmorequicklyandeasilythaneverbefore.Naturalbarriersthatweredifficultorda

6、ngeroustocrossahundredyearsagocannowbecrossedeasily.Thebarriersthatpeoplethemselvesmakearenotsoeasytoovercome.Butinspiteofallthedifferentkindsofbarriers,peoplecontinuetoenjoytravelandtheexchangeofgoodsandideas.　　32.Theexamplesinparagraph1areusedtotellthereadersthat_______　　A.peoplehavebee

7、nallowedtotravelfreelywithinthecountry　　B.peoplehavenotbeenpermittedtotravelfreelyforvariousreasons　　C.travellershavetocarryspecialpaperssuchaspassportsandvisas　　D.customspostsarenecessaryatthebordersofthecountries　　33.Somegovernmentslimitthefreedomofcommunicationbe