第一章 第三节 青春期-2019-2020学年七年级下册初一生物【名师学案】(人教版)

$$ !"#$%&' ()(* +,-. % !!!! /C1 ! """"""""""""""""""""""" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " """""""""""""""""""""""" " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " # ## # DEF ! ! ;<=$>?@, !" ! yz{| ! ,ùú�î�rS%�#å� ! $" ¹ã2�ã%Kî�«rCm' " ÉL�}u }¥� " E2ÓÔÚ¾% ! XYZ[ ! " ÆÕÚ ¾% ! bYZ[ ! e� ! %" ! }~� ! ,FC�oKrS2��rs%� Ãó� ! &" &ßùú�t " ¹ã[- ! �V ! " �ã[- ! �� ! -¼ ! E, ! �� ! $ yX & �< '& Á �< '% %C®-¼ ! '" ¹º2�º�Iº¼½qj%}~� " �eF b÷nåe%æ¼ " � ! ��Y� ! ! ' ! ;<=$AB@,CDE0 (" �×!Û�� ! 89 ! " e%AaÁç��� Ð� ! )" eI�D% ! �- ! �� " �h���e ! � � ! º " ��Êh��2��%�' ! /" &ßùú�t " è?oK%rS " ! Y ! ��� �«�³ " EbB, ! �� ! %×®m' ! $ -./ " ! ;<=$>?@, !" ! !" " RS # 0%FC� " oKrS2��rs% �Ãó�, $ " % *" ÚÉ� +" �d� ," ùú� -" gd� $" ! $.!# " TU # :ùú� " ¹ã2�ã:Kî�Bv [-�#%m' " E§m'BQ¦`��T¼½e � $ # % *" »â +" ÆÕ # ÓÔ ," ×� -" �� %" ! $.!# " KL # @�,ÓÔ2ÆÕrS��� ! S� Á�Ê[%F(, $ " % *"# �£VÓÔ2ÆÕ%rSBL�° +" ùú��ÓÔ2ÆÕ%rSBL�® ,"!( �óÓÔ%PίÆÕ%� -" ÓÔ¯ÆÕ�«�®rSÊ� &" ! $.!# " '8 # `�e�ùú���HI%, $ # % *" º¼½�®rS +" �®r� ," o� A -" ס#�A� '" ! $.!# " >? # `�Âgùú�¹Cåe%rSå� , $ # % *" [-U� +" [-JÅ ," o� A -" ס#��# &&&&&&&&&&&&&&&&&&&&&&&& % % % % % % % % % % % % &&&&&&&&&&&&&&&&&&&&&&&& & & & & & & & & & & & & A� !! !" e�wt�%����� ! C�DE�T): &6C ¡¢ ! £¤¥6DE:& ! m6%���� )¦5§¨ " $" ���� ! et)Ihij��©ª H� ! ef«¬­� ! tf«¬®¯ ! �f°±)²³ ´ ! ¦Afµm©ªH� " %" fij)H�¶~�l �u·¯��> ! ��6¶�����H�) ! ¥6 ���fijH�©ª¸�¹ " $ -./ # ! ;<=$AB@,CDE0 (" ! !" " V7 # `�e�ùú�%¢� " �¢AÁ� �%, $ ! % *" ¹�4üi£¤¥Õ%Ц +" ùú�§�iÌÊ©® # ¨ÿ%12 ," ùú�,ü©� # �ªK%�«ó� -" �ãºi¬Ñ­®¯%ÑL@£¤¥Õ%K\ )" ! $.!/ " LW # `��gùú�×®m'2×®:; %?� " HI%, $ " % *" �×°±%²³z´µ%q¶·¸ +" e¹*�� " ­�h��ó�e�ºº ," ¹ã2�ãº���«�³,Á�<% -" ¹�4ü¡¤Qe»e¼ " )*½¾%¿À /" ! $.!# " XY # ùú�,0FC�oKrS2��r s%�Ãó� " `��gùú�%?�HI%, $ # % *" Á�¶à@Q×�2¡µ¼½%#�¥�A� +" º���«�³ " )~º�CÕ=,Á:;%×® ," °ÂÃÄeÅ%�KD³28vD³ -" yÆ:;%CDq¶ " Áaë # Á % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % %