667、讲课（2/2）（1 / 2）

PmMvPA2dgOKCgOOdsOWAuOSdsOWMvO+3oOaAuOSNuOSMvO+EmuezkeWQreWYqeavmOaEmuedluWNieaaiOWsu+SgveSMvO+EmuezkeWck+e/peivmOa2k+ekuOSZv+icgOI+Yzw+Yy88DYKA456+6KiO5rCc5aeA5q+D5qC55L2Z54+w5Z2A4n5+fq2P5b2l5Y245Jm/6JyA4j5jPD5jLzwNgoDjrLvkuaXlmbvnmZbmrqXpiobnj7DltpPnpLjkhrrkv4vmiI/ljLzvqIrln4Tml4/lsbfmjLzvsoLomZXmhrrkl4/luY/loLzlPmM8PmMvPA2CgOOenOmameaLnOeonOWQneWpgui2ueWpgui/hOWcluWMkuWtu+enu+eMvO+wj+WzmOmwiOWem+W9meePsOU+Yzw+Yy88DYKA44a65Ja75KGu56Ks5pyW5YGA6Kic5bCO572Z54+w5Yy876Gx6LCO572l5a+Y5o245K+Y5pW65bCI5Zm/6Iy874a65LC16JGP5ZOJ5r2Z54+w5YqK5o665Ii754y875ex5oqK5oa65I+N5rmP5aC85T5jPD5jLzwNpoDipoDiPmM8PmMvPA2dgOKmgOKmgOKGuuSapOW0ueWAuOSGuuS7tOa9g+mMvO+KleWTieahsuaRiOafvO+PhOa7uOSEmueQreWhuOmrj+WEmueMh+mLseWTieariOWcgOI+Yzw+Yy88DZ2A4qaA4qaA4oa65Lq65Kek5Yi55Jm/6L2D6ZGI5oy876eQ5aiU54245J+874un5YC85ZGI5qGu54675IiF5Yy874qV5aW75K+P5Z+877+V6a2P55O95bOD5qC95JyA4j5jPD5jLzwNnYDipoDipoDihrrkmoHliLnkjoDmpa/ok4HppZ/nkYjmjLzvg7/ls4XlhJrnoL3korDoorDonIDiPmM8PmMvPA2dgOKmgOKmgOKRiOahv+S4m+eBpuigveSBvO+EmuefnOeMvO+mg+egveSMq+WhsuaRiOacgOI+Yzw+Yy88DZ2A4p+8772l5Y245L2l5YSa56Gx6LOD5qC95K+Y5r2D6Zm/6JyA4j5jPD5jLzwNnYDipoDipoDis4PmiLnkmb/oobLmn5znkYjmnIDiPmM8PmMvPA2dgOKmgOKmgOKbmOWDv+W+lOagveSMvO+9peW9peWcgOI+Yzw+Yy88DYKA44u45IC45JKG6ZCP5rGY5a6P5buO5YGm6Lml5Yy874a65Iu65I+d5bK55YGm6L2D6K+P5b+d5oGA6KC85Yy877q45KSu6Lml5T5jPD5jLzwNgbzvt6DmgLjkoajmgLjktpfmi7rkj53lsrnls4PmtLDmj53lkobljIfpkK3lmoLouaXljJLljLzvkK3lt6DmhJrns4jms4jml5rmtpfmna/otZTnk4nmv53mgYDooLzlsI7nkY/luaXljYnmmojlurjkoJvljLzvv53mgYDooLzlsoLomZXmsoLomZXmu47lgabojLzvhYblpK7lsIjlpZ3mq7rot7XovZnnj7DlPmM8PmMvPA2uleIpsJXiXq+V4iitleKBvO+ikeWQreWYm+ePsOWquOSAuOSonOW+lOacnuaWs+eMkuWvhOicnuapruiBsOiBvO+cnuaWs+eGuuSwiOW/i+axsOWDv+WPsOWNuOSAuOSMvO+vhOicnua/i+azg+avmOaqj+W5peWBvO+EmuefnOeBvO+WkOWGuuSZlOm/i+avmOaoheWMruWjgumMvO+aiOWaiOWOuuSzh+iCgOOXiuaNj+WNuOSdu+eMvO+EmueWueSWueSMvO+cnuaWs+eDkOWNuOSEmuefnOexsOW/hOWcluWMvO+cnuaWs+eDkOW/hOWcluWpruiNuOS9meePsOU+Yzw+Yy88DaaA4qaA4oSa54+m57i55Yq26KWd5oq26Jq85JCt5amt5Y+w5YSa57eg5pm/6L2Z54+w5YyS5bml5Y+D5Yy874Sa572l5Y6+54q26KWd5oq26Jq85Jqu5YC45Iy874u45JKI5YSn6ISa572Z54+w5YyS5bml5aic5Z+x5qa15qek5Yy877uU54Sa57uU57246b246YmF5Y+w5Y+D5Yy875aQ5Yuc572l5Z+c556c6ZqZ5pqZ5o2C5YSa56mk5Yq75D5jPD5jLzwNgoDjobPmkoblhJrnjr7njLzvhJrnnbjknbjknJTnr5jmvYPpjIfpg7/ljIfptJjll77liafouaXlr5jmhr3kjLzvnJ7mlrPnsIjlg5DliZzmobLmtoTnvZnoPmM8PmMvPA2CgOOikeWEmue0heWYq+mNuOSIueSAu+SJnOaYv+iMvO+Qp+WQp+WEmuext+Wqh+iDv+WzheWIueSZv+iquOSJnOaCgOO5vuiJnOahsuaEmuePpue4ueW0m+eArueMvO+Ppue4ueWfnOext+Wqh+iXvuWJp+iKtuizg+aKtui/hOWcluWMvO+Anee0r+iIueSZv+g+Yzw+Yy88DZ2A4qaA4qaA4paQ5ZGI5oO/5bOF5b2l5ZCn5ZCn5Yy874mF5YmO5pq85L+96ZmJ54Sa57+E5ZyW5bq45KCb5Yy875ye5paz54OQ5b2D6I245L+E5ZyW5Yy8772l5Z+c55GI5rmv5bml5Yy875aQ5ZCn5ZCn5YSa55GI5rGI572l5ZGI5pyA4oy877Sv6LCc5Y+m57i55b+E5ZyW5Z2A4n5+rbjpjpPlnIDiPmM8PmMvPA2mgOKmgOKHv+iNuOSMvO+WkOWnuOSusua9peWzg+azg+aMvO+DkOW9g+iNuOSMgOiMvO+RrOdudnVudnW9g+iqj+W0jeWMvO+JheW+lOaepee8nOeEmue9meePsOWAneeLnOeMvO+0sOajj+WLuOS9kuW/hOWcluU+Yzw+Yy88DZ2A4oKA44Sa57iF6biF6bmC54mc5pi/6Iy875yU572l5ZyA4pq875OB6bSv6IC85YGd54y874u45KCH5Ya65LOR5Z6b5Zud57yc54Cd56+c572Z54+w5T5jPD5jLzwNnYDin7zvl5DlnJTnnJ7mlrPnjLzvvZnnj7DlvZnnj7DlnIDimrzvvZnnj7DlrpfpjLzvg7/lmJTnjbjkr5jmmL/os4Pms4PmjLzvo4/lpLjkhrrkvJrljLzvvJrlipXlvJrljIfptJjlnqHljLzvr4TonJ7mhJrnvZnnj7Dlh7/opY7mjLzvnJ7mlrPnhJrng7/li4nmhrrkqJzlv4vmj7vnsrfli7jkvpTmjLzvkaznhrrkkaznsJzlrLDltLDlv4TlnJblnYDifn5+bnZ1bnZ1bnZ1nIDiPmM8PmMvPA2CgOOcnuaWs+eDkOW9g+iNuOSMgOivhOicnuaDkOW5peWpruiMvO+/hOWcluWZu+evhOicnuaXoumAuOSGuuSPjea9meePsOU+Yzw+Yy88DZ2A4oKA47uZ5aq45Jm/6IOQ5Yy874OQ5b2D6I245KC95Iy875ye5paz54OQ5aC95Kmu6I245JCn5ZCn5aC95Iy874Oo5YOo5ZyW5ZyA4j5jPD5jLzwNgoDjhrrkiY7mjYvmvZnnj7Dlq6LosbDljLzvu47luofluLzkmojli4nmj7Dlr5jmhr3kjLzvnJ7mlrPnhJrngJ3nvpTmirjkoIfltozoj7Dll6LpgLjkhrrkj43mjLzviobnj7Dlo4/lgLjkhrrkuJDljLzvorjosbnkmoToj7DlhJrnmLznub7okK3lhaTmqJzlipDljLzvjIfpkK3lopnpkZDli5znjLzvtKTlh7/orL3ojLzvkaznhrrkkaznsJzlnYDmj4TmvaXljbjkjLzvi5znt4HlqJzluaXlsI7nkY/luY/loLzlq6Logafov4TlnJblnYDifruY5buY5ZyA4j5jPD5jLzwNgoDjn4rlkIjmoIDpuZTmjIfpi4nmrLvkuaXlqJzlgabojLzvjp/lrbjkjp/lhJrnp6TlqLflqrjkmb/okZ3mtq7lhLvpvYPor4/ljLzvkojlhKfogrjljp/lhJrntLnllLrkgY3lpZ3mqpzmn7HmprXmkojli7DojLzvsbHln7HmuYLnh4zmub7ogLjkiobnj7DlnZblub7ogLjkjLzvirjksI/ls5jpqJzlkJ3ltJvngLjkurrkpLjkjYnmmojljLzvjYDoqY7njIfptq7luY/loLzlqJzlv4TlnJbljJLlvZnnj7Dlr5jmPmM8PmMvPA2CgOOxiOevj+WIj+WPneWIj+WMvO+3oOaPsOWEmueziOaziOaXmuaMvO+RrOewnOWvmuWvmuWMvO+lneaHv+iLnOeWu+SBp+iMvO+Wu+SAneevm+ewnOWbneesveiNuOSum+exiOevj+WPsOWquOSkuOSBp+iqj+WMvO+KuOSwj+WzmOmEmueEpOWcv+iNuOSRkOWLnOe0pOWsiuaMvO+CvOWJnOaJp+ifhOaWu+S2hOe9v+U+Yzw+Yy88DZ2A4oKA46mO56C95JeA6Y2G5ZGI5qGs5ou45Iy875+c56mk5Yi55Jm/6LaE56KX5pyA4oy875OB6ZGs54y877qc5ouJ5oa65IKM5rmP5aC85Z2A4oKA45+c56mk5a+Y5p+c55i/6JyA4j5jPD5jLzwNgoDjhrrkgozmjLzvpY/loIflhrrkioHospfpuY/loLzljJLljLzvvKXpp6TlhrrkpY7muZbmua/lPmM8PmMvPA2CgOO5lua5r+WIheWYvOSaruWvguiWu+Sum+e5oemJnOahrOaLuOS0r+iMvO+8pemnpOWGuuS7lOeUuOS2ueWMvO+xhOiojuajj+WfgOWquOSGuuS+iea/vuSPmumvmOaMgOiMvO+4hOi7v+eJnOahsua2hOeTveW5j+WgvOU+Yzw+Yy88DYKA44WD5ou65ISa54eg5q245K6X6aKv6Iy8752v6LWU55OJ5pa75Jm756Gs5o2G5Zq85LaE55+r55Gb57uA5oSa57iP5ayF5ZC55LGo5Y6+57qJ6Iy877CI5bOD5qGy5q+Y5p+55LmP5aC85T5jPD5jLzwNgoDjoKvnjLrkrKznhJrnqaTlqJjmpaHomrzvRkM+Yzw=