第五十六章：一道选择题（2 / 2）

PmMvPCB6YnAuaGpodWY1Mi56Ly86ZmNnZ3WavO+Iiee6nOaLieaCgON6YnAuaGpodWY1Mi5qamovLzpmY2dndZq875mr56yc5o+X6LaU5rev6D5jPD5jLzwNgoDjhrrkm5zmsaTlqqTlsbDllZzmo4LpjLzvhrrkmZTpiYDplrvknJ7mgqblPmM8PmMvPA2CgOORieWpveSEmuepiOWLlOmAneeaiuawnOWYu+mJsuaMvO+7puanjeWem+WQneWZiOWhoOaxlOexnOaMvO+oiuWAuOS+uOSAuOSEmueJruWLjueAneevm+entOentOektOigv+WPrek+Yzw+Yy88DYKA45q85Lqc5oSa546Q5YCc5pqF5Zee5py45IO85ZuK5omu5YuO55m756Gg5rGU57Gc5q+Y5oy875ii6amL5omA6ZOB6Zm/6D5jPD5jLzwNgoDjt4jnh5rnr5jmmrzkhJrnvprpurjkjLzvmYDltpfmsIjlPmM8PmMvPA2CgOObnOaAieaxpOWnpOWavOSaruWAuOS3iOeHmuejgumMvO+aheWXnuacuOSdv+S7juWNkOWqveeJnOaAieaLuOSXiuaxt+Wqh+iMvO+umue0pOWAneesoeeMvO+kruiNuOSxt+Wqh+icnuaCpuWvj+U+Yzw+Yy88DYKA476a6bCJ6KCK5bSb5rGw5Yy8752A4pqF5YmY6ZyA4peK5rmv5bOD5o2G5ZqF5Zee5py45Iy877e75YWG5aeO5oyO5pW65bu95Zq85JmI5aS06KC/5Y+t6T5jPD5jLzwNgoDjsI3lp6TlkZvnvKTnuI/luoflpLrksbflqofogabor5jmn7nknJ7mk7vnhJrnvaXlgJzmjLzvmYDltpfmsIjlPmM8PmMvPA2CgOONkOWqveeEmue3u+WrruWagOmBp+equOSAuOSKuOS7iOWavOSfueSMvO+KuOSruuiEmue6uuSXvOSaheWXnuacuOSMvO+aheWXnuacuOSagOmBp+eGuuSeruWQneWxsOWMvO+GuuSkruixt+Wqh+ivmOaBpug+Yzw+Yy88DYKA476a6Zqk5Ymc5pW65bCI5ZSt556b5aq45Jm/6JOB6aWf55a75Iy874a65JKd6bSk5aOE5qq45K+Y5o245Imu5YuO5z5jPD5jLzwNgoDjhJrnlK3nnpvlpZ3mlrvkmbvnm4rmoaDmsZTnsZzmr5jmn7nktI3ljLzvhJrnpZ3mt7XoqIvmkYzmpLTooL/lj63pr5jmjLzvmKLprpfpqrjkmb/oPmM8PmMvPA2CgOOdu+ezhuWEmueGiOWBjeWGuuSwiOWBp+iMvO+tuOS8nOehoOaxlOexnOaOu+SOmOaGiOWWu+Q+Yzw+Yy88DYKA46Wd5p2v6LqH5Y245LSv6Iy877S35bSY5YCd56aX5YaT5a+Y5p+55Iy875ex5oSa54O/5YuJ5qG75rqH5Y+N5rSb54y874Cd56WU5qe056e054yH6Zai6Kek5Y2i6L2u5aic5YuJ5omu5YuO5z5jPD5jLzwNn7zvvLzkuJvntoXllb3kr5jmiI/ljLzvlbvktIfovIDpq6Lon7bmqJ3mnYjlk73ljrjkjLzvop3pgLHlhJrni7jkvprpjpnokarpqrjkmb/oPmM8PmMvPA2CgOOQreW3oOaquOSZv+iLuOS8nOeGuuSQiOaYj+WIj+WFg+aLuuSMvO+Hjua6kua/oemAuOS5vuiBl+aduOWHmuewiOWMvO+lneabv+iGuuS7kumwnOW/vuS1geexsOWQreW6qeequOSXvuWktOigv+WPremMvO+wiOWZluahsua9g+msu+SWu+Q+Yzw+Yy88DYKA46S06KC/5Y+t6aq45IC45KmL5omA6buO5YyA6Iy876OH6IGA6Kiq6bGC6IO85Y2I6Jq85KGg5rGU57Gc5rq45KSu6I245Ky75Ja75D5jPD5jLzwNgoDjnYDmj4TmhJrnurrkia3nmb7pgJTmmKvpr5jmn7nkmb/ojLzvlbPms4PmhJrnt6DmgLjkiJHlnr7oirjkkoDpnYjlk73ln7bmqJ3mjJLlr5jmrJzmlrvkjLzvlIDmgLjkia7li47nPmM8PmMvPA2dgOKfvO+kruivj+WgveSMvO+AqOiAieaktOigv+WPremMvO+gveSul+mVnOacgOKavO+TgemMvO+JruWLjueAneevm+entOentOehoOaxlOexnOY+Yzw+Yy88DZ2A4oKA46mh5pea5oWG5aek5YSa576+6Iu45LuI5bON5b2D6I245KS75JWw6Iu55JWc5r+95Iy876G/5KWK5o6j6ZqA6Yy875K+5ZqF5Zee5py45JqA6YGn56+Y5p+55KC95K+P5ZyA4j5jPD5jLzwNmrzvk4HpiI/ljLzvpZ3mq7roh7/orL3okYnlgJ3noY/mjLzvrL3ogLjki5Tpna/ooaDmsZTnsZzmjLzvpK3mjrrks4fogKjoPmM8PmMvPA2dgOKCgOObiuWnpOWGuuS6h+WVnOa/m+aMvO+VnOaAneeqmemgveSvmOaMvO+rruW7p+ePsOaOneadiOWTveWMvO+jh+iLueSoqumxguiEmueVnOavmOamuuSMvO+jh+iBgOiEmueduOWIheWvmOagveScgOI+Yzw+Yy88DZq875OB6aG35qG35oy874uU6ZGJ5YCd55qK5ru96Lu96IuJ5qiU56+Y5o275Iy875GJ5am95ISa54q45Jmi5be16L+L5oy877q65Iy65Lmv5YyD6Ku66Le16KGg5rGU57Gc5p2A4oKA44mu5YuO55yA4j5jPD5jLzwNgoDjqLToua/lop3pk73lrLvklrvkqa7ojLzvgZjplprmv6XosIjloLzkvYPpqIXlia7li47njJLlpLTooL/lj63phrDloaDmsZTnsZzmjLzvpZfmjL/nPmM8PmMvPA0uLi4uLi4+Yzw+Yy88DYG874a65L+l6Jy45IGA6Kq45KOC6Ymu5YuO57ut5p6Q5pW65bu95b2D6Jq85Lqc5omc5q+Y5peu57uA5qOd56yc5oy876Gs5pm/6D5jPD5jLzwNgoDjpZ3mt7Xot7jptJjpl77lmI/lprrljYblsonouITopLTooL/lj63pjLzvkZDluZbmhJrngLzlu6bniZjpj7DlgJ3ni5znPmM8PmMvPA2dgOKUgOKUgOKAgOmKkeWiqeW0peWcgOI+Yzw+Yy88DZ2A4oKA46eQ5buO5Zm/5aC95Iy874a65Iyh6JyA4pq875OB6bSv6Iy874uJ5oaR5oaR5pa75D5jPD5jLzwNgoDjlbPms4PmhJrnurrksbflqofourjkm4vmgabos4Pmhrrki7jkvpTmgoHpjLzvoL/lu63mhJrnvrnkk73ki47nr5jmmb/ojLzvk4HppZ/nv77kn7nkjLzvjZDlk6flpYrmqofoobLmlrvkgafopLTooL/lj63pPmM8PmMvPA2dgOKCgOOQreWMieeLuuShruePsOWquOSAuOSEmuerruWtheW/peiGuuS7u+SRm+e/rua0m+ewiOWDsOiyt+WLuOSwjueMvO+HuuWrjeiEmuesheWsheWLjueGuuSXvuWMvO+MgeibvuS/iOamueSHluaonOWdiOWiqeW0peWcgOKavO+TgemJmOmPsOU+Yzw+Yy88DZ2A4p+875qk5Yi55Jm/6JOB6aWf55q85Ii55I6A5oy874yB6Lu75ISk5ZW95Kic5aC95JyA4j5jPD5jLzwNmrzvk4HprpfptoTnvb/lr5jmjYnmjLzvhbnkr4nomLvpibLmPmM8PmMvPA2CgOOTvOe+lOaMgOi2l+aDv+SlgOaMgOi2l+avgeaUsOaWu+SMvO+FuOaAuOS2hOeBseivmOafueSLuOSDv+WMvO+OkOWlu+SMruWskOWMvO+OueSqgumKtuiskOWKtuiktOigv+WPrek+Yzw+Yy88DZ2A4p+874i55IC75K+Y5rut5r6J5q+Y5o245Iy8756+6Lev6LuO5ZmA5baX5qq45Jm/6Imu5YuO56OC6Yy877OD5qiC5qOd54KO5ZyA4j5jPD5jLzwNnYDigoDjtpfmi7nkkoDmh5zpr5jmo63mjLzvnrPpuYnmmK7lvpnnjLzvnLrlkZvnvYPphrrkvq7ooJvlirjkh5rnjLzvkZvnqqTlgYDoq7rotLzkhJrnhYPmp5fmm7rkiZzmr5jmh7/ojbjkjLzvia7li47no4LpjIDonIDiPmM8PmMvPA2dgOKBvO+AkeW7u+SNh+mlu+SUp+Wtu+enu+eogua5r+WBpuivmOaZv+iMvO+tr+iHieeAqOiqj+WvmOa0jeWogua5r+WMvO+dnOaPrempg+aluOSKuOSHmuecgOKavO+TgemJmOmPsOU+Yzw+Yy88DZ2A4p+875mA5baX5oi55IC75JyA4j5jPD5jLzwNgoDjrpfphZXmpZ/njpjmr5jmtI3ljLzvkazngLjkv5jlv5jljIfpg7/lpLTooL/lj63pPmM8PmMvPA2dgOKfvO+ZgOW2l+aIueSAu+SvmOaonOWwjueMvO+KleWzg+aoguaMvO+jneeCjuWcgOI+Yzw=