Ihearmanyparentscomplainingthattheirteenagechildrenarerebelling．Iwishitwereso．Atyourageyououghttobegrowingawayfromyourparents．Youshouldbelearningtostandonyourowntwofeet．Buttakeagoodlookatthepresentrebellion．Itseemsthatteenagersarealltakingthesamewayofshowingthattheydisagreewiththeirparents．Insteadofstrikingoutboldly （大胆地） ontheirown，mostofthemareattemptingtoseizeoneanother'shandsforreassurance．
Theyclaimtheywanttodressastheyplease．Buttheyallwearthesameclothes．Theysetoffinnewdirectionsinmusic．Butsomehowtheyallendupcrowdedroundlisteningtothesamerecord．Theirreasonforthinkingoractinginthus-and-suchawayisthatthecrowdisdoingit．Theyhavecomeoutoftheircocoon （蚕茧）-intoalargercocoon．
Ithasbecomeharderandharderforateenagertostandupagainstthepopularitywaveandtogohisorherownway．Industryhasfirmlycarvedout （创造出） ateenagemarket．Thesedayseveryteenagercanlearnfromtheadvertisementswhatateenagershouldhaveandbe．Andmanyoftoday'sparentshavecome toawardhighmarksforthepopularityoftheirchildren．Allthisaddsuptoagreatbarrierfortheteenagerwhowantstofindhisorherownpath．
Butthebarrierisworthclimbingover．Thepathisworthfollowing．Youmaywanttocollectrockswheneveryoneelseiscollectingrecords．Youmayhavesomethoughtsthatyoudon'tcaretoshareatoncewithyourclassmates．Well，gotoit．Findyourself．Beyourself．Popularitywillcome-withthepeoplewhorespectyouforwhoyouare．That'stheonlykindofpopularitythatreallycounts．
72．Thispassageismeantto___．
A．tellreadershowtobepopularamongpeoplearoundthem
B．suggestpeoplehowtounderstandandrespecteachother
C．encourageteenagerstolearntomaketheirchoicesanddecisions
D．suggestparentshowtoguideandteachtheirteenagechildren
73．Accordingtotheauthor，manychildrenaresaidtoberebelling，butactuallymostofthem___．
A．areverymuchafraidofbeingkeptalone
B．arenotcourageousandconfidentenough
C．arenotverypopularamongtheirclassmates
D．aregoodatstrikingoutboldlyontheirown
74．Theexpr