Page 12 - Sach HDDL Phia Bac 2021
P. 12

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




















                                                                                                                                                   !!!!!!!3 &!%&#'!('  )!* $!#%4#!/ !5%6&!/12#'!1&  !!!!!!!!!!!!!" !#  $!$ #%!%&#'!('  )!* $  + !,-! $!#'  .!/. #!, !  !0 .!/12#'!%&#'!('  )!
                                                                                                                                                   ./0-&$1-2$2'3#$#*,:'*2#$%##*$6:-&$5*%5;#$-0,  !"#$%&'(($(')#$*#+,$,-$./0-&$1-2$2'3#  * $
                                                                                                                                                                                                              4*'5($%"#((%$(#6,$78$'*25#*,$9#-9(#$5*$./0-&$
                                                                                                                                                                                                              1-2$2'3#
                                                                                                                              !"#$%#$  &%' (                                         !"#$%&'$(&()*+

                                                                                                                              !"  # $ % &   '"   ( )*  '" '"* ( +, -('" .*/ & ' #   0  ' 123   !"#$% &$'( )$'*))+ ,-$.- */ 01+ 2*34( 5/ )$'*647 $- 684 .4/6 /)$94
                                                                                                                              453 '67 8(# 9 ': 1*; % <=# $ ' ! (: 1*/' 8(# 9 ': <5 - '" >7 1?   $:  684  ;*%  <$-  %$#-6*5-  1*-"4(  *6  &*-  !#*  8*%)46(  ;*%  <$-
                                                                                                                               23 +, ' 7 "*7 4 ; '*7 ; 0  @7 ' + %* 0  A  B;5'"   7 *C 1   '"   35))*"4( =$-" >546 '$%%#-4? !"#$% &$' 5/ :*%$#/ :$1 .56-4//5-"
                                                                                                                              %D%*  # '"  % (  E*  1 %*  -  E*F G7'* '* '"  ' #  HIJK&HIJL?  M    %*-+ 85/6$15'*) 434-6/ $: 684 143$)# $-*1+ )5:4 $: @14/574-6 =$ 285
                                                                                                                              %; 7  1*D'"  N    '  1*D'"  O  ' #  HIJK:  E*   1 %*  -   E*F  G7'*  5   A5-8 7#15-" 684 9415$7 BCDEFBCDG? H1$% 4-7 $: A*1'8 6$ I#"#/6
                                                                                                                              %*;3 ' 1  PD% $= A  % ' %    (   8(# 9 '    %*    C %D%* # '"?   BCDE 84 %$347 :1$% @*' &$ 6$ 684 %5)56*1+ J*/4 *6 ;*% <$- *-7
                                                                                                                              M 7  23 '"  7 1*  '" QF # 1 B;( + 7 *('" !"  # $ %:    % '*2'   $1"*-5K47 /4'146 %44 -"/ 5- !"#$% &$'( J45-" )$35-")+ '*))47 LM-"
                                                                                                                              42'   ( )*  '" 1RS; # ' " 7 +, TU'" .VW? M*D'" L ' # HIJL: 1 7   N4O P$1 H*6841 5- 684 !#-" )*-"#*"4Q J+ 684 )$'*) 94$9)4? R- A*+
                                                                                                                              *('" !"  # $ %: E*  1 %* -  E*F G7'*  5 4  * ) A!7 +5'*   C   BCDG *6 !"#$% &$'( @14/574-6 =$ 285 A5-8 %46 .568 )4*741/ $: 2*$
                                                                                                                              87X' M '*  3 E(C & $"% & 8 '" %*;#' Q  %*C %; % 1$'" @* 7 '"* ( + %*   &*-"F&*' N*-F;*-" <$- R-641F91$35-'5*) @*16+ 2$%%5 44 6$ 9149*14
                                                                                                                              0  M*D'" O ' # HIJL?                                   :$1 684 85/6$15'*) I#"#/6 BCDG #915/5-"?

                                                                                                                              !"  # $ % %%'" +, ' 7 <  '" B;2' "7!7 8X M$   A, +,# A7 % 1RC'"   !"#$% &$' .*/ *)/$ 684 .4*9$- :*'6$1+ .8414 A1? ;4 S$ *-7 85/
                                                                                                                              1* 7 @& @*D'" %*7 ' %* '" P*D)? M 7  23 1*D'" HY ' # HILY E*    '$F.$1,41/  )5347  *-7  .$1,47  7#15-"  684  H14-'8  .*1?  R6  .*/  *)/$
                                                                                                                              1 %* -  E*F G7'*  5 4  A, %*    C - 7 '"*  1$'" @ 1 E*7 ' 4 %* $7X'   8414(  5-  M'6$J41  BCGT(  68*6  @14/574-6  =$  285 A5-8  '8*5147  684
                                                                                                                              "7!7Z '=7 %*;3 ' A!7 %/'" '*2' <  '" B;2' "7!7 8X M$ A,   7 47 '   U4354. 2$-:414-'4 $: 684 &$1741 2*%9*5"- *-7 6*),47 .568 .$1,41/
                                                                                                                              '*2' 42' <5 - '" >7 1: *;3 ' -[( \'?                   $: 684 .4*9$- :*'6$1+ *-7 14914/4-6* 34/ $: 684 94$9)4 $: =$-"
                                                                                                                                                                                     >546 '$%%#-4( =$* I- 75/615'6?
                                                                                                                              ED% '*, @* C %$ * % %[' '# 1* 3   !"  # $ % '*7 ; 47 %*  %*C
                                                                                                                              1* 3  23 1 '" +, ' 7 %  1R6 % ( '"  7   ' 0  0  @&  D #!7: 1  '"   A*-+ 14)5'/ :$#-7 8414 *)/$ /8$. 68*6 !"#$% &$' .*/ 8$%4 $: 684
                                                                                                                                 '" A!7 > ' *=( -[( $S'* 0!#: %D%* '",3 '(3 @*C '" HY?YYY   4*1)+  !4$)5685'  94$9)4(  5?4?  684  4*1)+  =$*  &5-8  2#)6#14(  '?BT(TTT
                                                                                                                              ' #?                                                   +4*1/ *"$?

                                                                                                                              MRC'" 1R;3 ' 1*;3 1 '$7   '" P6 8  '" & 9+(C E 7 % (   '" Q,C M,3   R- 684 :*%$#/ )4"4-7 @# ;#$-"F<)*$ 2*5 $: 684 S*+ 94$9)4( !"#$%
                                                                                                                              1*S !"  # $ % +, ' 7 %  1R6  (;  X' % ( *(7 '*2' A 1 *;3 ' 1*C 7   &$' 5/ 684  1/6 14/574-'4 5- 2*$ &*-" $: 684/4 )4"4-7*1+ '8*1*'641/?
                                                                                                                              ',3     1 E(C $ '"?
                                                                                                                                                                                     V4$)$"5'*))+( !"#$% &$' '*34 5/ 7434)$947 5- )5%4/6$-4( .85'8 .*/
                                                                                                                              >   #)1    (  %* 1:  *('"  !"  #  $ %  )*D1  1R7 '  1RC'"  D  A/7  *S'*   :$1%47  #-741  /8*))$.  *-7  .*1%  %*15-4  '$-75 $-/  '?WXTFEYT
                                                                                                                              1*,'*  1RC'"  7 ;  @7 '  Q7 '  '/'"  A,  #  %D%*  '",3  '(3  @*C '"   %5))5$- +4*1/ *"$ P2*1J$-5:41$#/F@41%5*- 9415$7/Q? R6/ 4-61*-'4 / ))
                                                                                                                              N]Y&K^Y 1R7 ; ' # _@* E(RQC'&P`R#7? + % ( *('" %[' 1* 3 Ra 4 ;   14'$17/  43574-'4  $:  *-'54-6  $./  *-7  6411*'4/(  5-75'* -"  14'4-6
                                                                                                                              A 1 % ( 1* # A, 4['" %* 3 %$: %* '" 1,  5 Q  '2'" +X' 1RC'" "7(7   P/$F'*))47 -4$64'6$-5'Q #9)5  %$34%4-6/?
                                                                                                                               C '"('  23 _" 7 +, "7(7  C ' 12' @7 ' 1 Cb?
                                                                                                                                                                                     !"#$% &$' '*34 .*/ 14'$"-5K47 */ !* $-*) =5/6$15'*) A$-#%4-6
                                                                                                                              -('" !"  # $ %    % %/'" '* ' +, c7 -%* + %* 0  %D%* # '" % )   #-741 04'5/5$- !$? TEZETTDZ[ Z&>=SS 7*647 BC68 \*-#*1+ETTD?
                                                                                                                              B; % "7( 1*`C d;3 1   '* 0  YKeKYYJed e$>-MM % ( $  > ' *=(:
                                                                                                                              M*  1*(C A, c; + %* '",3 HIeYHeKYYJ?












                                                             8                                                                                                                      9
   7   8   9   10   11   12   13   14   15   16   17