Hellow guys, Welcome to my website, and you are watching 5학년 2학기 과학 5단원 산과 염기 1차시 (과학책 96~99쪽). and this vIdeo is uploaded by 달세뇨필름 at 2020-12-04T05:20:28-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
