参考答案
1.D2.E 3.E4.A5.B6.E7.B8.C9.D
10.B 11.C12.A13.A14.B15.E16.A17.A18.D
19.D 20.A21.C22.A23.D24.C25.D26.B27.B
28.C29.A30.E31.E32.C33.B34.E35.D36.E
37.E38.D39.C40.C41.E42.D43.B44.B45.A
46.D47.E48.C49.A50.C51.B52.A53.E54.B
55.C56.D57.E58.C59.A60.B