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- 問題詳情：閲讀理解TheaveragecollegestudentsinAmericaspentanestimated（結算的）$700ontextbookslastyear．TheNationalAssociationofCollegeStoresreportedmorethan$5billioninsalesoftextbooksandcoursematerials（課程資料）．OneoftheAssociationspokemanCharlesSchmidtsayselec...
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