However, it appears that the nature of written language itself helps increase academic achievement, regardless of a book's [______].
동의어 · standard, caliber, excellence파생어 · qualify(자격을 주다, 적임이다)
★ 주제문 — S3·S4·S5·S6이(가) 이 문장을 떠받칩니다 — S1을(를) 맥락(으)로 뒷받침