第20章 两两对练（1 / 2）
PmMvPIKA44+H6ZuK5YSa57my56+654mc5qqP5Yy876iT5bGK6JW95Lu75Imc5qGy5oy877OL5oC45Jm/6D5jPD5jLzyCgOOog+m5heiEmueqv+irjuiRkOWwveigi+egi+eMvO+5vOWugueEmuebhui6h+WanuaAuOSMkOWCpuWMvO+zi+ahj+aLieazj+WMvO+6h+Wot+ilreaAuOSMvO+jgumOieWEmueepeejhOaqv+irjuiXkeiBtuiMvO+EpOWkvOSLuOSAuOSJj+a7juWJnOahsuazh+ialOeMvO+rsei5iueVveS7u+SJnOahsuamvOS/peg+Yzw+Yy88goDjmrzkupzmPmM8PmMvPIKA46+75p2H5YSa57SX6aye54C45Ia65LCO57qH5Zy95KiK5Yy875ud57yc54a65Kek5aqe56q/6KuO6J2A4qaA4qaA4qC95JyA4j5jPD5jLzyfvO+biuWhvuWymOmEmuelneamuOWLteippOWHm+iEjueXvee9vOSCvOWYj+WvmOaxsOWZv+g+Yzw+Yy88goDjn4TmqJzmu7rphJrni7jkgLjkhrrks4jmh4zmi4nmqJTnurrkq6Lor5jmj4PlgYDjhJrnsbzlrr7luYLngLjkiZzmqo/lPmM8PmMvPIKA45uX54245D5jPD5jLzyCgOOntOe3u+e0l+msnuedgOKGkOe5uuees+mRu+mcgOKEmueGr+WGu+eCseWjgumLuOSkguiumueMvO+EpOW7h+WXj+WRkOWMtuaoiuWqh+iBteaUsOaEmuenheWTveSMvO+0l+msnueEmuetuOS7h+WrouiNieaaiOWonOWxsOU+Yzw+Yy88goDjqIPpi4LohJrnsbflqofovJzngLjkhrrki5zntKTljr3ksJzlhYPmqKHooJfmop3pprzkv6XoPmM8PmMvPIKA44u45IC45IOZ5qGy5r2D6YOZ5p6/6LaE55+r54y876a85L+l6ISa56Kd6bmv5YyA6D5jPD5jLzyCgOO8lueflOe0pOWoqumWu+SXvuWHnOmMvO+lneaKuOSgvOSduOiahOiXkei6oembiuWHnOmNj+U+Yzw+Yy88goDjv53mgZPphJrng7jliaPml5HouaPohYzll53lgLjkhrrkrbjkorjor5jmj4PliI/ljLzvirjkrprnm4nngYDohJrnp5/pmp3lgrHlgLjkhrrkqJzlorjor5jmj4PljIPomoTohJrnlrvkPmM8PmMvPIKA47mv5Y245J+E5qan6D5jPD5jLzyCgOOKuOS4hOiGuuSonOW1g+W5ruWRrOeEmueWu+SMvO+Sp+eAuOSLuOSMvO+MgOi2hOc+Yzw+Yy88goDjm4vmmI/lv4XotpTmh6Tlhoflo63mjLzvua7lkaznhJrni4nml77lnbjkgLjkuoflspzpirjkuIToqr/oq47oPmM8PmMvPIKA45q75pOJ5rCc5aG75pe+5ZuX54y876iq6YuC6Lmg5qS45K2W5oGm6JGw5bOH6Lq65JqA6a6Z5oy874a65J6u5aK46K+Y5qWL6JqE6IC45Jm/6D5jPD5jLzyCgOOQreWWhOipvOeGuuSpvOewnOWGr+iPhOaLuOS6uuSRsOWNuOSMvO+8keWOveSwo+WAuOS6h+WRj+WYkeWmreWEmueCp+i0m+U+Yzw+Yy88goDjirjki4LoprflhJrnprzkv6XohrrkqJzlvYrmsJzlnq7lnq7lk7vnk7vnv4XorZ7phJrnqr/oq47oPmM8PmMvPIKA442T5beX6bCj5YC45D5jPD5jLzydgOKBvO+woOecgOI+Yzw+Yy88goDjnJ7mjpDlhJrnjKrpj7vnmIjmnq7lj7nkurznr5jmsbDlmb/oPmM8PmMvPIKA44q45I245J+36LSN5ZO95Ku66Iy874a65KWd5oe/6JS65Y2P5ZCt5ZGE6Iy874yA6LaE5z5jPD5jLzyCgOO7r+Wvj+Wht+igl+aenemmuOSGveSMvO+rv+W2hOe9meicveSoiuWEmueqv+irjuiMvO+tuOSOh+mGp+iEmueWu+SonOU+Yzw+Yy88goDjqbznrr7llK3ls57nprzkv6XoPmM8PmMvPIKA44iQ5ZO7556u5ZqZ6Iy874uJ5re16K+c5ruH5Y+Q5qiU56at6ISa54aH5Zmo5q+Y5pm/6D5jPD5jLzyCgOOoqumLguiEmuemvOS/peiRkOWiuOiwnOWvgeagl+awo+Wgl+asiOiHm+iSr+aCpuW0jeW/heizj+WMvO+ol+minemmvOS/peiRkOW6iOWzi+aAuOSDmeaameiLieamt+U+Yzw+Yy88goDju6bnnbfohrrkkb/oiYvmtJfprJ7njLzvq4znkbvphJrnp7fltYHnqo/lgLjkr5jmj4PljLzvq7/lgZ7mprrln4DphJrnlrvkPmM8PmMvPIKA44a65KiK5aq/6KuO6Iy8772Q6Kqc5rOf6Z2v6D5jPD5jLzydgOKCgOOnkOWlneaHv+i7lOabiuWoheWgveSjgumcgOKMvO+cvuais+aVveS7u+SJnOahsuaMh+mQreW4nOeEmueyieiRu+mMvO+0pOW5gueGuuS5guemvOS/peg+Yzw+Yy88nYDigoDjvaXlnIDiPmM8PmMvPIKA47q65Kq45IO45IGN5a+Y5o+D5b2l5bGF5YC45Iy877OD5oa65LOD5qa85L+l6D5jPD5jLzyCgOOJnOeRjOawnOWhv+Sqh+iqv+irjuidgOKCgOOzruWJjuWgveSUr+aMvO+Vs+a4kOW8keWInOaquOSkuOSGuuSDu+eRsOWzh+iRiOaHv+iNuOSMvO+theWBjeWsrOeSjuaRiOaMvO+Du+e5r+WhrOaKuOScgOI+Yzw+Yy88goDjk4HprpfpsJzlmZ3ps7nlprzkv6XonYDin7zvs67liY7liL7loL3knIDiPmM8PmMvPIKA47Of54Gk54Sa55i76Ymy5ped5YC45K+Y5o+D5bGw5Yy874yH6aOC6aic5Zmr55a75Ia95Iy876m25p+U55u65Imc5pi/6Jy95KiK5baE572Z6D5jPD5jLzyCgOO/iuW2nuaEmuemreWaiOWIjeWKuOSGuuS6h+WGkeaMvO+YguigneWpguiJsuaMvO+AvOWGiOWahOiMj+WMvO+inem5r+WWu+SonOWZq+emvOS/peg+Yzw+Yy88nYDigoDjhJrnj53lk4nmoL3kiormmrzkjbjkjLzvm4rluYLnl5HotpTmmrzkkYjmjLzvg7/lvpTmgoDjhJrnr73or5jmmL/ooa7osLzkiYLorprnjLzvqaTloIflhrrkg7vnjYnmoL3kjLzviYLog7vnrprnqKPnjLzvm7/okLjmj7rlqr7ltqnnsq7olbPmuJDlvJHlgaPlgZPpnIDiPmM8PmMvPIKA44+85YuJ5re16LuH5Y+Q5oSa54aH5Zmo5qq45IC45LqH5YaR5oy8766r6bSk5YSa54as6ayT6JOK5oa65JOK5ouJ5ri85Ja75IKA45mJ572Z56OP5YC45LqH5bKc6Yy875Gs54C45LSY5aeS5Yy876a85L+l6ISa56Wd5oe/6LC16JeR6Iuc56q/6KuO6D5jPD5jLzyCgOOwnOW6qeeXneWAuOS6h+WZleeMvO+AvOWjleaoiuWqh+ikvue6uuQ+Yzw+Yy88nYDigoDjq4nmlrvkkr3lgInmlY7lhJrnqJHlgLjkmb/ojLzvurrkhJrnk77ojLzvg7vng7vnqrjkpLjkrLvkoL3knIDijLzvprzkv6XohJrnjIfpvZDokqfokZDlh4zmqYHmt5vpPmM8PmMvPJ2A4oKA45eI5bqH5aC95Iy876a85L+l6JyA4j5jPD5jLzyCgOO7tOa1geeepee8nOeMvO+OmOaGiOWhnea/uueJguiMgui/heiPsOWMvO+ahOiXkeikteiWu+SMvO+lnea6h+WGuuSZq+e7iOWLq+eqv+irjug+Yzw+Yy88nYDigoDjl4jluofloL3knIDijLzvtLnlkbDlhJrnppjnvrLnkJ3mq7rogYDjkbvpnbvppILorprnqrjkgLjkhrrkh4zmi4nmqJrpqYHmt5vpPmM8PmMvPJ2A4oKA46q/6KuO6JyA4j5jPD5jLzyCgOOpvOePlee6uuSJnOaMvO+LpeW0heW6uuSJnOaMvO+lnea3teioiuWaqum7iOWLq+esu+SYkeWmreU+Yzw+Yy88nYDigoDjj4TmqJrpjLzvhJrnlrvktoXljLzviZblgZTpvJznko/muK7ojbjkjLzvs67lgabok4nmuK7ojbjkgoDjg7vnua/lpLjkpLjki6flgLzlqJzlsI7nnIDiPmM8PmMvPIKA46GN6LS/6KeF5aSu5YSa57eX5rqp56ic5bOf6bCj5Yy874uJ5o2L5oa65I2L5pa75D5jPD5jLzydgOKCgOOEmuelnea6h+WDu+evmOaNuOSMvO+Emuelnea6h+WTieavmOaMvO+Xlua8oOacgOKMvO+6uuS+nOeHv+irieaJheWum+eEmuegvOa3huWpgea3m+k+Yzw+Yy88nYDin7zvl5Dlhrrkj73ksK7ovYPpjLzvj7zlm4vmhJrniI3lirjknIDiPmM8PmMvPIKA466k5a245LCc5bqc5aic5Zmr54y876Gd5qSX6ISa55Kv5YaD6Lq65KS75Lmg5qOC6ZeR6I6L5oyH6YuJ5oy874Wj6L+l6Lm656Gd5oSa57ap54OA6Ku66KOC6ZeR6L+p56eX5p2+5KmB5reb6T5jPD5jLzyCgOOKuOS/neawnOWonOaonOWStOaXquewnOW9kOiEmuenpOWYq+mHv+iPgOmJheWzmOk+Yzw+Yy88goDjpK7lg7vnra7ojLzvuYLnpLjkiI3li7jkPmM8