unit1TEXT C/BACCD/CDD/DAABA/DADCA
FAST READING DBCCA/CBBCA/DCDCD
HOME READING ABCCC/DAC
UNIT2 D/BDDBD/DBDAD/ABADD/CAACC
BBCAD/BBBDD/ADDDA
ABADC/ADBCD
UNIT3 C/DCCAD/DDCAA/BADCD/BBCDA/CB
DBACC/ABDCBB/DABC
CADCC/DDAD（这九题答案不确定）
UNIT4 C/BDCAA/B/DBACB/CCDCD/CB
CDABD/CDCDD/DCCBB
BCCDC/DCADB
UNIT5
C/BACBD BDABC ABACD ABABD
DDDDB DBDDC CDCCD
CBDCB AACBD
UNIT6
A BBBAD BDDDC CCBAB CDABA DA
CABDD ADDAA BCCDA
BCACB BBB