答案:
多项选择题(共40题,每题2分。每题的备选项中,有2个或2个以上符合题意,至少有1个错项。错选,本题不得分;少选,所选的每个选项得0.5分)
51.BCE 52.AD 53.BCE 54.CDE 55.BCE 56.AE
57.ABDE 58.ACD 59.ABE 60ABE61.BCE 62.ACDE 63.BCD 64.AD
65.ACDE 66.ACE 67.BCD 68.CDE 69.ADE 70.ABC 71.BCDE 72.AC
73.BCE 74.ABDE 75.BCE 76.ABD 77.CE 78.BDE 79.ACE 80.ABCD