参考答案
1.C 2.E 3.A 4.B 5.D6.E7.A8.B9.A10.C
11.D12.E13.B14.A15.C16.E17.C18.A 19.D 20.B
21.C22.D 23.B24.A25.C26.E 27.D28.E29.A30.B
31.D .32.A33.D 34.B35.E36.E37.B38.B39.D40.B
41.A42.D43.D44.C45.C46.B47.A48.B49.B50.D
51.D52.E53.E54.C55.A56.E57.A58.E59.A60.C
61.C62.D63.C64.A65.D66.C67.B68.C69.C70.E
71.B72.A73.D74.C 75.D 76.C77.C78.B