... rd ttong vi6 50 Ly luan chinh (ri St TVuyen (hdng Sdihing 1+ 2-2 01 Y KIEN - KINH NGHIEM tao led. Chang ban, dya tren van ban da dugc chuan bj, chj them Idi (nhting tu in nghieng) theo ... thdng tin thyc te, thi ttong phuong thdc dgc, do bien dgng nhjp dieu thudng it. Nhip dieu the hien qua gigng dgc bao gid ciing dn djnh. Ngucd dgc cd the dgc vdn ban theo nhip dieu ddu nhanh, ... tu phu hgp. - Ngudi gii noi da bit diu the hiin bin sic ci nhin ro ring han Ndu nbu trong phuong thdc dgc, vai trd hd trg cua gigng dgc tdi hieu qua tdc phdm ttong nhidu the loai bao...