参考答案
1.C2.E3.C4.B5.D6.C7.D8.C9.B10.A
11.D12.A13.C14.E15.B16.E17.C18.C19.D20.D
21.D22.D23.B24.B25.D26.C27.C28.C29.D30.C
31.E32.B33.A34.B35.A36.B37.D38.C39.A40.D
41.A42.B43.C44.A45.A46.D47.A48.B49.E50.A
51.B52.B.53.C54.E55.C56.A57.C58.C.59.A60.E
61.B62.A63.B64.A65.A66.A67.D68.A.69.A70.C
71.D72.B