Page 13 - 人教二数

456# 7$ 8/
!
! ! ! !
)

#
!!! !&"# ! .,/! "

#
! !"#$ # ! %&'(
#
#
!. ijP1% # %. # ./0& $#!%#$#( $
#
! ,( ! )' ! )( #
#
!! !! #
*&+ *&! *%!
#
#
#
#
#
#
#
! /) ! )/ ! &( #
#
!! !! #
*)+ */( *%' #
#
#
#
#
#
#
#. kl%" #"## # ./0& $#!%#$#' $ #
#
#
#
# ". qors% # ./0& $#!%#$#) $
#
#
#
#
#
#
#
# ! % " ‚ƒr„ †$ =m‡jLYx$
#
&. mmno@Yp% #
#
#
! (/ ! €& ! )& ! €& # ! ) " r †ˆ‰ŠYwLYx$
#
*)' !!! */( #
#
#
! ', ! !! #
#
# ! )*"+
#
# '. tuv% # ./0& $#!%#$#* $
#
#
! ,+ ! €& ! &! ! €& #
#
*)) *,, #
!!! #
#
#
! (" ! +% #
#
#
#

!! &+*,3!!!!! (+*%%3!!!!! (/*)&3!!!!! (*(%3

)"*%(3 ++*%"3 )!*,!3 '+*%%3