51. import "[im'p?:t, 'imp?:t]" "v./n.进口,输入,(pl.)进口商品;要旨,含意"

　　52. importance [im'p?:t?ns] "n.重要,重要性"

　　53. important [im'p?:t?nt] "a.重要的,重大的;有地位的,有权力的"

　　54. impose [im'p?uz] v.征(税);(on)把…强加给

　　55. impossible [im'p?s?bl] a.不可能的;难以忍受的，很难对付的

　　56. impress "[im'pres, 'impres]" "v.(on)印,盖印;留下印象,引人注目"

　　57. impression [im'pre??n] "n.印象,感想;盖印,压痕"

　　58. impressive [im'presiv] "a.给人深刻印象的,感人的"

　　59. improve [im'pru:v] "v.改善,改进,增进;好转,进步"

　　60. improvement [im'pru:vm?nt] "n.改进,进步,增进;改进措施"

　　61. impulse ['imp?ls] "v.推动 n.推动;冲动,刺激"

　　62. in [in] prep.在…里(内，上);用…(表示)ad.进，入

　　63. incentive [in'sentiv] n.刺激;动力;鼓励;诱因;动机

　　64. inch [int?] n.英寸

　　65. incidence ['insid?ns] n.影响程度，影响范围;发生率

　　66. incident ['insid?nt] "n.事件,事变"

　　67. incidentally "[,insi'dent?li]" "ad.附带地,顺便提及"

　　68. incline [in'klain] "v.(使)倾斜;(使)倾向于 n.斜坡,斜面"

　　69. include [in'klu:d] "v.包括,包含,计入"

　　70. inclusive [in'klu:siv] "a.(of)包括的,包含的;范围广的"

　　71. income ['ink?m] "n.收入,收益,所得"

　　72. incorporate [in'k?:p?reit] "v.合并,纳入,结合 a.合并的"

　　73. increase "[in'kri:s, 'inkri:s]" "v./n.增加,增长,增进"

　　74. increasingly [in'kri:si?li] "ad.不断增加地,日益"

　　75. incredible [in'kred?bl] "a.不可相信的,惊人的,不可思议的"

　　76. incur [in'k?:] "v.招致,惹起,遭受"

　　77. indeed [in'di:d] "ad.确实,实在;真正地,多么"

　　78. independence "[,indi'pend?ns]" "n.独立,自主"

　　79. independent "[,indi'pend?nt]" "a.(of)独立的,自主的"

　　80. index ['indeks] "n.(pl.indexes,indices)索引 v.附以索引"

　　81. indicate ['indikeit] "v.指出,指示;表明,暗示"

　　82. indication "[,indi'kei??n]" "n.指出,指示;表明,暗示"

　　83. indicative [in'dik?tiv] "a.(of)指示的,暗示的"

　　84. indifferent [in'dif?r?nt] "a.冷漠的,不关心的,不积极的"

　　85. indignant [in'diɡn?nt] "a.愤慨的,愤慨不平的"

　　86. indignation "[,indiɡ'nei??n]" "n.愤怒,愤慨"

　　87. indispensable "[,indis'pens?bl]" "a.(to,for)必不可少的,必需的"

　　88. individual "[,indi'vidju?l, -d??l]" "a.个人的,单独的;独特的 n.个人,个体"

　　89. indoor ['ind?:] "a.室内的,户内的"

　　90. induce "[in'dju:s, in'du:s]" "v.引诱,劝使;引起,导致;感应"

　　91. indulge [in'd?ld?] v.放任，纵容，沉溺;使(自己)纵情享受

　　92. industrial [in'd?stri?l] "a.工业的,产业的"

　　93. industrialize [in'd?tri?laiz] v.(industrialise)(使)工业化

　　94. industry ['ind?stri] "n.工业,产业;勤劳,勤奋"

　　95. inertia [i'n?:?i?] "n.不活动,惰性;惯性"

　　96. inevitable [in'evit?bl] "a.不可避免的,必然发生的"

　　97. infant ['inf?nt] "n.婴儿,幼儿"

　　98. infect [in'fekt] vt.传染，感染;影响(思想等)

　　99. infectious [in'fek??s] "a.传染的,传染性的,有感染力的"

　　100. infer [in'f?:] "v.推论,推断"