뉴스기사  https://www.youtube.com/watch?v=f4rg8jOj1O8 

게임시간을 줄여야하는 이유 자료https://kin.naver.com/qna/detail.naver?d1id=11&dirId=1130&docId=326710873&qb=6rKM7J6E7Iuc6rCE7J2EIOykhOyXrOyVvCDtlZjripTsnbTsnKA=&enc=utf8&section=kin.ext&rank=1&search_sort=0&spq=0

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