参考答案
1.CD 2.ACDE 3.ABCE 4.ABCD 5.BDE 6.ABCD 7.ABDE 8.ABCDE 9.BCE l0.BCDE
11.ABCE l2.ABC l3.ABCE l4.ABDE l5.ABCDE 16.ABCDE 17.ABC 18.CE 19.AC
20.ABDE 21.ABCE 22.ABDE 23.ABCDE 24.ABE 25.ABCDE 26.ABCE 27.ABC 28.ACDE
29.DE 30.ABCE 31.ABCE 32.DE 33.ABCDE 34.AC 35.BD 36.AC 37.BD 38.BDE
39.BCDE 40.ABCE 41.ACDE 42.ACDE 43.ABE 44、ACDE 45.ABCD 46.BCDE 47.ABCE 48.BE 49.ABC
50.BCE 51.ACDE 52.ABDE 53.ACE 54.ACD 55.BCE 56.DE 57.BDE 58.ABCD 59.ABD
60.ABCD 61.BCE 62.ABC 63.ACE 64.ABCDE 65.BE 66.BD 67.ABCDE 68.ABCD 69.ABCE 70.ABCD
71.ABCD 72.ABCDE 73.ABCD
