参考答案
一、单项选择题
1.B2.A3.A4.B5.C6.B7.D8.A9.D10.A
11.D12.D13.D14.A15.C16.A17.B18.A19.D20.B
21.C22.B23.A24.B25.B26.C27.C28.B29.C30.C
31.B32.B33.B34.C35.B36.C37.B38.C39.D40.C
41.C42.A43.B44.A45.B46.A47.C48.D49.A50.D
二、多项选择题
1.ABC2.AD3.CD4.ABCD5.AC
6.BD7.CDE8.BCD9.ACD10.ABCDE
11.ABCDE12.BCD13.AB14.ACDE15.AD
16.ABDE17.ABC18.ABC19.ABCDE20.AB21.ABCDE
22.ABC 23.ABCD24.ABC25.AB