Ph\u1ea7n N\u0103m – Ch\u01b0\u01a1ng 1 – B\u00e0i 7: Th\u1ef1c h\u00e0nh: Quan s\u00e1t c\u00e1c d\u1ea1ng \u0111\u1ed9t bi\u1ebfn s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 tr\u00ean ti\u00eau b\u1ea3n c\u1ed1 \u0111\u1ecbnh v\u00e0 tr\u00ean ti\u00eau b\u1ea3n t\u1ea1m th\u1eddi<\/a><\/blockquote>