教学（二）（2 / 2）

PmMvPJ2A4p+876KR5b2l5Y2J5qat5Yi55I6A5oGm6K+P5Yy876OC6ZyA4pq8776a6a+K54yA6Ke754y875Gs56ek5YiT5YiT5Ze+5ZeA6YGA5ou55KiG5oeo5YSa57ml5aui6Lq65LeU5yA+Yzw+Yy88DZ2A4oG874Sa57+96ZmJ54Cd54yh55q85IG875uY5bSk5bOf55ed5a+Y5rGw5Zm/6Iy874Gm6I245I2J5r+E5bCF5ZyA4pq875Sw5oy16Ju65Imc5oy875Ct5aOM5Yq45IiQ5bCF5ZG35pC96Z+876C55IO754yH6bSY5Zu/6KuQ5amJ57ut5oSa57CG5bCG5beG5aq45Jm/6Iaw5bml5YGm6CA+Yzw+Yy88DZ2A4oKA46C55IO756q45Jm/6KiU56W75K+P5b+E5bCF5Yy876mJ57Cb5p2Y6ZCt5beU54Sa57uI5ZWb6YmO572Z56iU56+Y5rON5Yy877+K5YmO56+Y5pm/6JyA4pq875OB6ZGs57q65LeU5yA+Yzw+Yy88DaaA4qaA4q+Y5pu95L+75Iy877uI5ZWb6YmO572Z57mg5oC45ICd55iJ5oy874q45Iu55IO45bi754Sa56Kd6YyH6YGn6KqP5Yy874uc54C45IC85ZOJ5rCF5ZG35pC96SA+Yzw+Yy88DYKA47ml5Zm755KA6ZCt5aOM5YSa546+55md6aq45LqH5b+L5oyH6Zyf5o+w5bm+6Iq65Y675Iy874q65Yu45Ku66Lu/55a75J2A4oy874a65Lmv5Z+876KR5aat5Yi55I6A5oGm6Iy874e/6I245KqP5YKA46C95JmV5rmI57mI54y8772l5ZyA4pq877Sk5bmC57ON5Yur556j6baX5rSI5iA+Yzw+Yy88DYKA472l5YSa552e5p+U55ak5YKK6LmC55Gw5a+Y5pi/6Iy8762u6JmV5oSa55Sw5p+U57ml5bmD5o2J5rmW5re16LOD5oy874e/6I245Ju877G06Iu45JCt5bOl5YSa54q45LuU54O85Yyr5Zi/6I2J5pqI5bml5Z+r55Wv5oy876at5bOD5pq85I2J5rml5Yy876Ks5pyW5bSv6Ja75Lq45KCb5a+Y5o245K+Y5oy8766X6a6X6bOD5oi+5Za75CA+Yzw+Yy88DYKA44KL56WL6JyW5aOs5rSb54Cu556j6baX5rSI5iA+Yzw+Yy88DZ2A4oKA46q45Jm/6Kat5bOD5r+E5bCF5Yy874i55KOC6ZyA4pq877Sv6LiE6I+w5YCd56K6546Q5baE54y877uI5YeJ55i76Ymy5rSk5Y695Lml5YGn6LGw5SA+Yzw+Yy88DZ2A4oKA46Ks5pyW5baE55O95ZyA4pq874a65KSu6L+J5rCc5bmW5rmW5qek5aek5bq65LeU5yA+Yzw+Yy88DZ2A4p+874i55KKs5pyW5Z+55LmI57mI56OC6Yy876OC6ZyA4pq875OB6YWa5auX5bGU54245Iy874WD5p6l54Sa54mG6baZ6Za75ICd54uc57CF5ZG35pC96SA+Yzw=