練習三CDBBAB
練習四DABCAD
練習五ABCDC
練習六CDEFAB
練習七BCAAD
練習九DCADABBC
練習十一BDACCADDBC
練習十三CEDBA
練習十四FACDBE
練習十六DCCD
練習十九DBBCBA FFTTF
練習二十GFHCBDEA
練習二十一CCDAB
練習二十二CDBEA
物理練習一ADADDCCCCA
練習二BDCDABD
練習三ACBCBAB
練習四DADBDCBCCCDAABA
練習五CCCADCBC
練習六CCAABAAACBABD
數(shù)學練習一BDACBA
練習二DBBACA
練習三ACD
練習四BBCA
練習五DBDA
練習六CBDCD
練習七ADA
練習八CBBA
練習九DC
練習十D
練習十一BCD
練習十二DDDC
練習十三BCABD
練習十四DABDDDD
練習十五DDBA
練習十六DBCBC
練習四DABCAD
練習五ABCDC
練習六CDEFAB
練習七BCAAD
練習九DCADABBC
練習十一BDACCADDBC
練習十三CEDBA
練習十四FACDBE
練習十六DCCD
練習十九DBBCBA FFTTF
練習二十GFHCBDEA
練習二十一CCDAB
練習二十二CDBEA
物理練習一ADADDCCCCA
練習二BDCDABD
練習三ACBCBAB
練習四DADBDCBCCCDAABA
練習五CCCADCBC
練習六CCAABAAACBABD
數(shù)學練習一BDACBA
練習二DBBACA
練習三ACD
練習四BBCA
練習五DBDA
練習六CBDCD
練習七ADA
練習八CBBA
練習九DC
練習十D
練習十一BCD
練習十二DDDC
練習十三BCABD
練習十四DABDDDD
練習十五DDBA
練習十六DBCBC