Page 17 - Sach HDDL Phia Bac 2021

() !" #$%& '$$$$!"#$%&'(#)&*)+,

$$$$$$$$$$$$$$$9/ #$:6 . 3 -$' -"$# %$, ($4 %$"1.$%.-+$5 .$6 .$ 7$48)$ !" #$%&'"$% !'( )$* )+$, #$* -$' -"$' .$".-/$
#######8/&59#:%&$#,$'* ' -"$' .$".-/$,0$"0 %$ -/$' .$,1-/$'" 2$' ! ,0$"0 %$ -/$' .$,1-/$'" 2$'
!"#$%%&'($%#)*++$,*#-().#/+$'*%0#1*22%*#
!#,%54*+#%557#$)#$"#*+54(5"#6*$)&+*#2*4(3*#).*# $"3#2+*,,($#2*4(3*#).*#,$'*#*")+$",*#3&*#)5#
,$'*#*")+$",*#3&*#)5#1$4)#6%5-#$,)(5" 1$4)#6%5-#$,)(5"

!" #$%& ' !"#$%&'(#)&*)+,
!" # $% & '()* *+, - *+.-" /( , ) 01, (2-( *(3-( *+.-" , 4 /, - !"#$% &'#( )* ( +(,- .-,-'$/-. )0 ( ')%-*1$0- %(**)23 45)+5 )0 1#60
5, - -1-" 03 # 6)6( -"37 -&7 /(. -" 89:;<=: *+, 4 - # >/ 4(* 2$6%-. #0.-6 *5(''$4 (0. 4(6% %(6)0- +$0.) $0* +789:;<=:
?&+5.-;@A+#,BC D+ 6 6 & (&-" 6E- % 4 ", F 4 0 * (&, 5 6 *( # %)'')$0 >-(6* ("$ ?@(6A$0)2-6$#*;B-6%)(0 /-6)$.*C7 !-(6 15- +(,-
G1-" ; #,-( 6( -" 6(. (. * -" -H-" 6 & /(4 0 6 -37 *+.-" ",&, -016(0+- (6- 6-%0(01* $2 14$ 6),-6 1-66(+-* 15(1 (6- -,).-0+- $2
. -" - H7 >" , %3 *H- /, - * .BC 6-+-01 ?*$;+(''-. !-$1-+1$0)+C #/') $2 15- (6-(7

D(A. *+47 - *(47 * 6 & -" 53. D37 *(2 !" # I 6 %3 - , " ' D++$6.)0" 1$ '-"-0. $2 15- E(> /-$/'-3 !"#$% F$+ +(,- 4(* 15-
-(&4J *(3-( 0 *(3-( 6( -" 6 & 1, *+&, "), @K L -" ; $%&. ? , 6E- /'(+- 2$6 %-- 0"* (0. -0"("-%-01 $2 15- +$#/'- B# G#$0" (0.
!" # $% & %3 (&-" ) #3 6(3-" @K L -" )-( -(&4 0 , ( &'($ @()3 45-6-(* !"#$% &'#( 4(* 45-6- B# G#$0" 2$#"51 A(+H 15-
5 . 0 64 6 G -" 7M- 52-( 6 & ",& 2-( #2-(C "-6 1$ /6$1-+1 5)* 2(%)'>7

!" # $% & %3 - , ,- 5). ? >NO<8;NO<<BJ 6 G (. * -" 6)6( !"#$% &'#( 4(* 15- /'(+- 45-6- 15- @$ I$ ?J-. K'("C !-4*/(/-6
# -" *! - # NO<8 - - # NO<=C D , H7J -" 5 ?&. I"-" P * 4(* /6)01-. .#6)0" LM<8;LM<<3 (0. 4(* ('*$ 15- 6-,$'# $0 A(*-
6( 6 ( ' 1-" Q -" , ( , 03. *()-" R - # NO<= 0 - -" 26$% LM<8 1$ LM<=7 N1 4(* ('*$ (1 15)* /'(+- 15(1 15- @($ F(0" B(61>
-(H- FH- 6)6 FH- * 6 *+.-" *#-( ( -" -" '(.-" *+3. S , ( , @$%%) -- 5-'. 15- N0.$+5)0( @$0"6-** )0 O(> LM<= 1$ +('' 2$6 15-
1-" Q -"S 03 F *( . 5 - SQH- !"47 -S E, *( 6 (, - 6 , 6)6( *#//$61 $2 15- PN0.$+5)0( @$0"6-**Q %$,-%-01 26$% .) -6-01
FH- 6( J 6 , *(, - , G -" -(H- FH-J 4 *+&-( 61-" /(&, ( ' -150)+ "6$#/* 4)15)0 15- /6$,)0+-7 E5- RB- $0*R 4-6- ('*$ .6( -.
'()'C 5-6- 1$ 6-S#-*1 .-%$+6( + 6-2$6%3 )%/6$,-%-01 $2 /-$/'-T* '),-*
(0. '-"(' /#A')+ $//$*) $07
!" # $% & 6 T ' ( -" F, $6( %%6( G 6 ' U4 6 ",& *(A. U47 *
%-( G NVV WXYU YID -"37N<Y:8YNOORC !"#$% &'#( 4(* 6-+$"0)U-. (* !( $0(' V)*1$6)+(' O$0#%-01
/#6*#(01 1$ I-+)*)$0 !$7 LWWXYVXZIXFE .(1-. K-A6#(6> L<15 LMM[7

12 13