TAI LI$U ON THI OAI HOC1950 cnu hoi trlic n^liioni x^p llioo 22 chu dl^ini 1 air and sea travel (3 bi)16 otorin! " 2 #$i %& %' (1)2 animals (4 bi)1' *n + ,n-iron./nt " 2 #$i 60169 (1)9 2ood " 0 #$i (2)3 army (2 bi)4 Clothing (4 bi) 20 3hop4 + 3hoppin! " ' #$i 9019& (2)5 Computers (2 bi)6 Crime &Punishment ( bi) ! "du#ation (12 bi)21 3port4 " ' #$i 9'19% (2)10 5oot#*ll (1)11 H/*lth + /dicin/ " 11 #$i t6 '9 78n 599 (2)12 Holid*:4 " 2 #$i 60 61 (1)1& ;o#4 + /.plo:./nt " 6 #$i 6216% (1)15 on/: A