西安市第十一届青少年科普知识竞赛小学组答案 1~25abbcacbacbbbacbabcbbcabac 26~50ccababccacbbbaaacbabcbcba 51~75CCACBACBACBACBACBACBACBAA 76~100CABACBABCBABCBABCBABCABC
