摘要：Many people agree that knowledge of English is a must in international trade today. A.a; × B.the ; an C.the ;the D.×;the 析:knowledge 是抽象名词.一般不与不定冠词连用.但指具体“一门学问 或“一 门学问的掌握了解 可与不定冠词连用.这可称之为抽象名词具体化.类例如:a strong character 坚强的性格,a bright future 光明前途,a waste of time 浪费时间,a pressure on sb.对某人的压力,have a good time玩得痛快,He is a failure /a success as a leader 他当领导不行/很出色.抽象名词不与冠词连用是泛指一般概念.意义.如:what fun! fine weather ;common knowledge 常识,Knowledge begins with practice.foreign trade.因此international trade前不用冠词. 由以上两点可确定答案为A.

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