1. Cov nqaj hlau ion pab tso tawm feem ntau siv cov nqaj hlau ion zog tsawg los pab hloov kho qhov chaw ntawm cov ntaub ntawv. (1) Cov yam ntxwv ntawm cov ion pab tso tawm Thaum lub sijhawm txheej txheem txheej, cov khoom me me uas tau tso tawm raug foob pob tas li los ntawm cov ions them los ntawm qhov chaw ion ntawm qhov chaw ntawm...