ally,wetellsixthgradersthingswekeephiddenfromfifthgraders.Inthelast30years.however,asecret-revelation(揭示)machinehasbeeninstalledin98percentofAmericanhomes.Itiscalledtelevision,Televisionpassesinformation,andindiscriminately(不加区分地),toallviewersalike,betheychildrenoradults.Unabletoresistthetemptation,manychildrenturntheirattentionfromprintedtextstothelesschallenging,municationthroughprint,asamatteroffact,ess.plexcodeofsymbolsthatmustbememorizedandpractices.plexmaterials.40.Accordingtotheauthor,feelingdepressedis________.A)asuresignofapsychologicalprobleminachildB)somethinghardlytobeexpectedinayoungchildC)aninevitablehasofchildren'smentaldevelopmentD)amentalscalepresentinallhumans,includingchildren41.Traditionally,achildissupposedtolearnabouttheadultworld________.A)throughcontactwithsociety10
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