教学（微 ＹIqμщχ.℅м（1 / 2）

PmMvPA2CgOOcgeWNuOSquOSOmeWOmeW9iua9iuaMvO+KuOSMgui5heiEmueeruWTu+eWu+SonOWSgOWvvei6uuSquOS0leaMvO+ws+WFt+WhrOakuOSGuuSwouemp+iPu+eyt+W5peWMvO+2l+aLueSlnea6h+WEsOWlk+WOmOaXnOaXvOWapOWwiOWJreeOuuSzh+ilu+SMvO+CvOWYvOSOuuSHv+iXvuWwjueooei6uOSgm+UgPmM8PmMvPA2dgOKCgOOJi+amiuiZiuiMvO+KleWyieifnOemgOKmgOKcgOIgPmM8PmMvPA2CgOOfhOayieiFg+aEmueyrOaPneW0oOe6uuSRj+Wxr+iBgOOEmuegneWyrOaHkeaHkeaNp+eAuOS6h+WPgOmOueSgh+WMvO+EmueWiuakoumruuiRteaMvO+js+a9iuaEmueGu+eGu+eMvO+EmuejuOmyguaOueSRv+iGuuS6h+WRj+WJi+amiuiZiuiMvO+cveSoiuWEmueEvOWPjeaWu+SAneePmumMgOiMvO+GuuSmtua/ueaPu+eyt+W5luawnOWquOSjgumwjueRj+WwnOW2ruiKg+a5gueJnOaWu+QgPmM8PmMvPA2CgOO4oOaEmuePsOWPsOWEmuePveS5o+iFjOWCseWCseWrouijgumGuuSwiOW+ieawnOWuoeeOmOaEmueum+eMvO+Mh+mZluaDuOWEmueotOiJo+alheW6iOWAneeyjOapkeaMvO+oiuW7p+e5oOa/heiEmueQkOa9iuaAneeqvuWHjOaLieaEmueLuOSGkeaZo+iMvO+PteiWpeW5gueAuOSQreWpreW9peWEmuePhOaDv+WIkOWIvuWvmOa7gOaquOSZv+iZu+ePhOaLu+SNuOSWu+QgPmM8PmMvPA2CgOOwteiukOWHlOWEluiEmueWu+SrouiMvO+9kOiCnuWMh+mbnee8nOeEmueuuuSCvOaMj+WjgumOu+SwnOWPveSNuOSgj+e0sOaEmueJheWbg+eAneeEsOWNj+WMvO+0mOWPsOWEmuexiOecgOa6uuS5g+agvOWjgumLuOSAuOSGuuSaiuaJruW7juWwheivvOWwnOW+mum2heW6uOSJi+WOkOW2hOeMvO+LuOSAuOSGuuSHkeaoiuWIj+W1v+WGkOeyguiZleaEmueonOWYreWqpOWNuOSlk+WOmOaXnOaXvOWapOUgPmM8PmMvPA2fvO+nkOWGuuSyiei9peWqpOWrjOePsOWZv+iMvO+GuuSNuOSXj+WfnOcgPmM8PmMvPA2dgOKBvO+XvOWapOWirOacluWBvO+mgOKmgOKirOacluWcgOIgPmM8PmMvPA2MvO+XreWNkOWEmueWu+SAneeKluWEmue8vOSrj+W1luW1luWqkuWrjOeMvO+3oOaAuOSWu+SJnOaqj+W9g+mPhOaoheWDv+WoheWPg+W9peWMvO+Emuetu+etu+etluatlua0l+mPvOS3teionOWvmOaqj+WYqOWRp+WPsOWEmueajuWwnOWYq+mppOWln+eNuOSjgumcnuaTu+eMvO+2pemCseaavOS5peW6uOSlu+SYv+ggPmM8PmMvPA2CgOOHqOWSkuaEmue3oOaAuOSpiuWCseaBgOOEmueqjuaAiealn+eNuOSIj+WQueSrv+Wil+avmOajgumCgOOyieicoumEmueKuOSTn+azn+mTl+W5peWtuOScveSoiuWxt+Wqh+ionOWkruiZlOmavOSNuOSdu+eMvO+HiOWAuOSEmue5peWJguafhueqpOWlk+WOmOaXnOaXvOWapOWMvO+zgOimguaIvuW9g+m9kuW9k+WEmue6h+WRj+WCh+aCh+a1h+a1h+aev+iQreWpreWEmuenpOW7heWxt+Wqh+iMvO+ntOeIvuWfueSBgOOvveiUn+aIvuUgPmM8PmMvPA2CgOOzkeWjtuiGiOWgh+WGuuS7t+aeouWkguiMguiEmueIm+ewuOS7heiUn+ajgumolOevmOaqj+WMvO+pieeot+WEmue8rOmjjeaPveSNuOSmi+asnOa5oOa0jeWMvO+ntOe2ueW5oOa/heiEmuePveSTiuaLieaolOeWu+SrouiMvO+KuOS5heiPsOWEmuevvei1u+e5peWonOW7h+WNi+aoqum7gOiCgOO0l+mAh+iJguijk+ekuOSlheWekuaMvO+AneeoiuWRu+aKleixiuiEmueavOSdiOWAnee1iuaomeWngOaEmuePsOWnpOW6uuSot+Wwp+eqoOWUr+a4m+eJi+amiuiZiuiMkuWMvO+lnea3teiGuuSekua2oemwnOWbiuWolOeWu+QgPmM8PmMvPA2CgOOiveWBgemAieagl+a6uOSMoeiEmuekguiMguipq+WUn+ajgum4keaaiuaWu+Srj+WMvO+AneeoiuWMtuawnOWjque4quecveSoiuWEmueWu+SAnee6oemxmue2pOiMvO+VuuWZo+ilheWRu+awnOWnt+W1geeMjuaLieaEmueKuOS/hei5peWonOWjieYgPmM8PmMvPA2dgOKCgOO5gueAuOSWueScgOIgPmM8PmMvPA2CgOO0mOWAvOWnkuWwnOW2hOeOm+ezkeW0heWlk+WOmOaXnOaXvOWapOWpruifhOaUr+a5r+WEmueZpuWHpeWMvO+hoeizueWEmuexjeWvj+WMsuWMsuWGuuSQiOa+vuifhueQiOaOuOSptuaSnemMvO+GuuSWm+epjuaGkeaZo+iEmuefnOelq+eroui9g+mHiOWAuOS8vOS9peWCgOOGkeaZo+iEmueAvOW9kOijleasiOijk+exiuimteabv+i1iua0m+e0m+eQuuaxiuiDoeaAnee0tOiwnOWbiuWJnOarg+eau+aMvO+pieeot+WEmue6jOasoeeWu+SPveSNuOSFjOWog+mAh+iYv+e6jOaMvO+AvOWjjeawnOW0m+e0m+erouiHlOWxiuiEmueGr+i4m+e6uuSZkui+m+aqnOaMvO+2l+a/iuW/p+WEmueNnOaSiOiquOS+ieaBpuizg+aAh+i7p+ewheisveiwnOWJp+iqh+iNuOS5peWonOWMvO+KuOSomeWngOaEmueWu+SGuuSonOWRqumvmOaPg+Wlnea3teiLnOe5peWpruiut+WLnuWTveSEmuegvOW4pOW5gueJnOYgPmM8PmMvPA2CgOO5peWGuuSpvee8rOeEmuegl+a8vOSJnOa8vOSvmOaMgOiMvO+JnOasi+e6uuSWu+S2heWMkuWXvOWapOWvmOaNhuWNuOS0m+WbsOaEmueng+imnOaEmue7pue3v+iNp+ejgumMvO+3oOaAuOSNuOShrOaZv+ivmOaGveSUgOKUgOKNgOipjueqh+i+oemqh+iKuOSdhuiEmueWu+SonOWPvOS4uOW2l+aMvO+EmuenpOW/lemtuOSAgOaEmuelk+WOmOaXnOaXvOWapOWonOWvmOaOueSgh+W5peWCgOOOmOacsumHv+iqpOWfhOaonOWYreWSo+aJguiEmuetg+e8geeIj+WsoeeaneWvlOajgumMvO+oiuWGuuSoiuWwnOWqgOaHpeW5gueJnOaJi+amiuiZiuggPmM8PmMvPA2CgOO4ruibuuS5ruW9ruWuvuWNqOeMgOi5peWGuuS6uOSPhOaQueSlk+WOmOaXnOaXvOWapOWvj+WMvO+Wu+SXiuaNj+WVs+agl+a9g+mlneaOu+S5peW2hOear+ggPmM8PmMvPA2CgOO/peicuOSEmueWu+SOuuSeseWoheWMruWMvO+oo+eTieaggOmRoeWLieaAuOSWu+SxlOe+sOW7veW0pOW7veWvmOaMvO+preWPsOWLm+iorOeEmue/lemQiOa7heWaiuaqh+iyuuSWu+SrouivmOaMvO+druWNj+eEmueKuOSujOeBv+etuOWJi+alpeWvmOa5peWMvO+wjueeruWavOSNuOSaruWos+a9g+ivj+WbuuSZv+iMgOi2hOeMvO+Hv+iJnOahsuavmOaNuOSfueSVs+azg+aEmue3oOaZv+imgOKmgOKTpuWPm+mEmue6uuSiruW3r+iAgum/heiMj+WAvOWgvOWEmuefhueQiOacveSFlea6uOSQiOaMvO+NnOaYiua+mummi+iMkuWyrOaFg+arouiMvO+ei+iGuuSAvOWrouixsOWpl+apl+a9g+ivj+WpreWzpeWEmuext+Wqh+ikiuadv+Sln+eNuOSdkumahOaIj+WuuuSCvOa3oOaZv+i5peWMvO+0pOWXoei9kOiBteavmOaMgOi5vuiruuiEmueWu+SonOWZleevmOaNuOSCpuWHgeWMvO+ptuaSnemEmue3oOaZv+iMvO+HpeW9peWEmue3oOaZv+ggPmM8PmMvPA2CgOOapOWqpOWzuue/ieawnOWpl+aHv+i9g+iNuOSYv+iMvO+QreWpreWEmuexiOe8luekreaCpuWWu+SMvO+eruWcnuaEmueptuaSnemUuOSasOW0pOWdnuavmOaYv+iTveSruuiEmueHv+iPh+mIuOS4r+W4r+WAuOSMjuaLieaolOeWu+SvieWZv+iCgOO5peWjp+iGuuSBpuiYv+iJi+amiuiZiuiUr+aWu+QgPmM8PmMvPA2CgOOQreWVs+aEmueriOW5guezg+aMvO+lneaLuOS6jeaJjOa9g+iqj+WfueSZvOS2ruWPsOWEmueruuiKuOSrgee5g+aBgOORhOihsua0pOWhsuaZv+i5r+WinemMgOi2hOefvO+xt+Wqh+iHv+iIseWUp+WZgOW2l+aIueSAu+Slk+WOmOaXnOaXvOWapOWUgOKUgOK6uuSzpeWMkuWdruWitOi6vOeNuOSOu+Sul+mRluegl+arr+aim+W8tOi3tea3vuWDr+iJkOWQlOWEmue3teaXjOWHnOmNkOWCgOOVl+e0sOaEmueJvOaJvOa/ueaSp+iHlOWmk+aGuuSmk+aMvO+HlOWEmueuuuSRj+Wql+mql+m5peWAnee1iuaHjOaHi+aMvO+UsOajj+WGuuS5j+WwnOWGuuSNuOSXj+Wlk+WOmOaXnOaXvOWapOUgPmM8PmMvPA2dgOKCgOOKleWIk+WmgOKmgOKcgOIgPmM8PmMvPA2dgOKfvO+GuuSIueSOgOaMvO+XvOWapOWcgOIgPmM8PmMvPA2CgOOVr+iyrOaDt+iDt+ivmOa9g+m8nOehu+aMvO+bnee8nOeonOeonOe/iuW/p+WquOSZv+iAneexsOWEmueRg+aRlue5gueJnOaJi+amiuiZiuiUgOKUgOKfhOaJguiEmueTvOmTvOmGnOWGuuS6h+WhjeWmuuWnvOW5heiHjOarouiMvO+PveSPjeaMjuanpOWgvOWAuOSrouiKoum4hOiEmuexiOevj+WOuuSHv+ivieWjgumMvO+muuWnvOWEmueyrOaJgui6h+WkjOarouikguiMgui7heiGu+e5oOa/heiEmue6h+WynOmKjeWMvO+Mg+iKhOi3teiTvOWJi+amiuiZiuiMvO+5ruWRrOe6h+WynOmKuOSKoum4hOiEmueRieaRieaiuueMvO+xueSKtOevgeaUsOYgPmM8PmMvPA0pemJwLjgyOXooOTU1OCOSxzk2MSOPkuKhkeI5NjQ5Izk1NTgjnYDigoDjoqzmnJbljLzvl7zlmqTlnIDiID5jPD5jLzwNgoDjhKTlt6/nkLjlhJrnt7XotqHpq6LouaDmv4XohrrkqJzlkJ3luaXlqa7ojLzvr7roq7rohJrnj7Dlh6jlgJ3nhLzlhpHmjLzvv4XojI/lhJrnp7Tnp7Tnl77luaTlqa3ls6XlhrrkgLzliYvmsJzlhpDnr5bmoZ3mooXmlrvkjLzvmb3kiZzmmL/oj73koY/mjI7mgLjkjLzvhrvnpLrniL7lqIPpv4XotJvnlKznhJrni7jkhpHmmaPoqJzlj5fojLzvgIfohJrnobvmsaXpmL/nuozmsIjlkojljLzvnarnsIXohJrni4nmgbboiL7lprrlp7zlgJ3nqr7ljI7mi4nmhJrnm4rliZzmjIDova7lgoDjpYDmgJ3njbjktrnlpZPljpjml5zml7zlmqTlhr3kjLzvm4rlvrLnhJrnlrvkl4DoiLbmpbvks7bojbjkrJzmuaDmsJzloazmpLjkoazmgLjkjLzvhbnkiLnko4LphrrkoLTnrbjklIDpjKHoqojoqJzln6vnla/mID5jPD5jLzwNgoDjpZ3mt7XonqXnvrLnjIDopK3moJvliI/lk73kq7rohJrnhbnkjbjkjK7lhLPmkY/ljYnmtIfovK/ljLzvgJ3nrbnoqKPnu47lrYnmpZ3mrYnmsJzllbPmoKvniZzmobLmt6Dmo4LpjLzvprrlrYPnhrrkirjkk5/mqbjmk73khJrnlrvkq6LomZbmg7jlhJrniYflrr7lrJzmn47lgYDjr73olJ/miL7ljLzvuYXouIPohJrnlrvkgJ3ntLTosJzlp7Tnp7TnmZbmg7jlr73olJ/mgJ3nprjlk73kq7rohJrngJ3nqbznn5HnjIDogL/muojloJvlgYDjirjkq7rolrvkqJzlmoDlsJzljbfljbflpKLpID5jPD5jLzwNgoDjqIrlu7jkhJrnuaXlhrrktbrnvpTmsJzll4/lq7rkjrnkkb/opZPljpjml5zml7zlmqTljLzviafoqofohJrnuoflr4Pmh6jlsbflqofor5jmvYPpmb/ooJfmq6/mjLzvh7/ojIDoqpfpgLjkg4DonYDmhJrnt6Dmmb/olIDilIDin7zvhrrkp6TlhoPoirbopZ3mirbor5jmjbjkr5jmmbzktq7lmb/oID5jPD5jLzwNgoDjt6DmgLjkmYDltpfmhJrnuaXlvK/lmZXmi4nmiormi4nmlrvkoazmj6/mgL7lpbvkgqblgLjkjLzvq7/liL7ll77lpq3lpZ3mjpDluaXlr5jmhr3kjLzvmqjnvLnluYLniZzmmL/onL3kqIrlhJrni6flgLzlmojlgoDjsqzmhYPmhJrnvLTot7XmhJrnm5vnupfmm4rlvrLngJ3nqIrlqZLmhJrnpZ/nqofojbjkjLzvrJLlrJLlhJrngbrogbrom6/mm6/mgJ3nprjljLzvu5DllIjohJrnj4TmrYPnirjkk5/mjLzvvpTmjbjkh5TljI/lo4LpgJ3nvI/llrDlv73phJrnhrvnhrvnID5jPD5jLzwNgoDjiZznkYzmhrrkkYzmsJzlioPmg5DlpZPljpjml5zml7zlmqTlqa7ojLzvu47lnpvlhrrktLTosJzlnpLmvY7oq4znj7DlhJrnhYPmrYPngoDjjIfpsKPltLDmhJrnt7XojZPlsJbmjYfpqJzlobLmkJrpkLjmkLjmjLzvgJ3nlLrlnpvls5/pk5flhJrns5/ppKLpgJ3nprjlID5jPD5jLzwNnYDipoDipoDir5flnIDiID5jPD5jLzwNlIDilIDiID5jPD5jLzwNgbzvpYXljoXmgbzvpYXljoXmID5jPD5jLzwNgbzvpYXlv4vlj4Tmi7vkgbzvgorohYPmhJrnvILnqIXljK7lobLmhr3khrrkvILnuYLniZzmrr7ljajni7jkpbvkID5jPD5jLzwNh7/olILmkYjmjLzvqr3niZzmkYjmjLzvtoDohJrnmabpuozmqJfll77liafokYjmr5jmhr3kID5jPD5jLzwNkZXmkZXmjLzvhrrkgYDmmI/lkY/lirbopZ3mt7Xoi5znpbvkgInmr5flr5flr5flgbLlMTGGuuSQiOaYj+WxsOWOkOWLueS0leaDsOivmOaGveSmgOKmgOKBsuU0Ma+Y5qWv6JS65ZmK6I+w5ZmA5baX5oSa57Wu5pm/6JmG5Y2J5Yu55Iy877K656ek5Ye/6LSV5oOw6Lq45KCb5Z6u5baF5SA+Yzw=