17.× 18.× 19. × 20.√ 21.× 22.√ 23.√ 24.√ 25.× 26.√ 27.√ 28.√ 29.× 30.√ 31.√ 32.√ 33.√ 34.√ 35.√ 36.√ 37.× 38.√ 39.√ 40.√ 41.√ 42.× 43. × 44.√ 45.√ 46.× 47.√ 48.√ 49.√ 50.√ 51.× 52.√ 53.√ 54.√ 55.√ 56.√ 57.√ 58.√ 59.√ 60.√ 61.√ 62.× 63.√ 64.× 65.√ 66.√ 67. × 68.√ 69.√ 70. × 71. √ 72.× 73.× 74.× 75.√ 76.× 77. √ 78.√ 79.× 80.√ 81．× 82. × 83. × 84. √ 85. √ 86. √ 87. × 88. × 89. × 90. × 91. √ 92. √ 93. √ 94. √ 95. × 96. √ 97. × 98. × 99. √ 100. √ 二．单项选择题
1.A 2.D 3.C 4.B 5.A 6.A 7.C 8.A 9.D 10.D 11.A 12.B 13.A 14.D 15.A 16.B 17.A 18.A 19.C 20.A 21.B 22.D 23.B 24.C 25.C 26.C 27.C 28.D 29.D 30.B 31.B 32.C 33.B 34.B 35.A 36.B 37.D 38.A 39.A 40.C 41.B 42.C 43.B 44.C 45.B 46.A 47.C 48.A 49.A 50.B 51.C 52.A 53.B 54.C 55.B 56.A 57.B 58.B 69.B 60.A 三．多项选择题
1.BD 2.ABCD 3.ABDE 4.ABDE 5.CBDE 6.ABCE 7.ABCD 8.ABCD 9.AB 10.BD 11.ABCD 12.ABDE 13.ABDE 14.ABCE 15.AB 16.ABDE 17.AB 18.ABD 19.ABCE 20.BCDE 21.ABCD 22. BCDE 23.ABCD 24.ABCE 25.BC 26. BDCE 27.ACDE 28.ABCD 29.ABD 30.AB
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