5.1 THLN by trang phan https://padlet.com/phantttrang77/b3wqvbzl9jsd Khoa hoc en-us 2017-12-16 04:11:27 UTC 2025-12-02 05:42:54 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Diskette.png tôi hơi bối rối phantttrang77 https://padlet.com/phantttrang77/b3wqvbzl9jsd/wish/216654049 2017-12-16 04:23:26 UTC https://padlet.com/phantttrang77/b3wqvbzl9jsd/wish/216654049