Xov Xov Xov Tooj

Nrog rau kev tsim kho, xaim cov ntsia hlau ntswj poob haujlwm yog muaj kev sib tw nrog kev ntsuam xyuas, nrog cov, kev sib tos ntawm kev tsim, xaim xov tooj ntawm cov lag luam ntawm kev ua haujlwm zoo heev; batch quantitative kev koom ua ke yuav tau hloov cov khoom lag luam ntau hauv cov khoom sib txuas, muaj thiab muaj cov khoom sib ntaus sib tua, cov ntses loj noj me ntsis ntses ntawm kev sib tw ntawm kev sib tw, ntawm tus nqi siab siab Teb cov neeg siv khoom zoo siab zoo!