sat2006年5月答案

SEC3 EEBED DEBDA EBDED ADBAC CBEC
SEC5 CADCB EACBB ACEAE ECBCC DEEA
SEC8 ACBDD EADEC AEBCC BEED

SEC4 DAEAD DBBCA ABDDC CBEBD
SEC7 DCBCE EBE 15 4 1/6 2/3<x<1
115 18 9 1600 3/4 10
SEC9 ECDBB ABCDA CCADE A

SEC6 BDADA DCEDC CAECD ADACE DECBD ABAEC AAAEB
SEC10 BEBEC BBEED CACD