题目

 CNN Student News is a ten-minute, commercial-free, daily news program ______ middle and high school classes, ______ is available Monday through Friday during the school year. A. adapted for; it    B. meant for; that       C. intended for; this       D. designed for; which   答案：D   ​​​​​​​句中design作program的后置定语，要用非谓语动词；design与被修饰名词program构成动宾关系，要用表示被动的过去分词；is available Monday through Friday during the school year是修饰program的一个非限制性定语从句；从句缺少主语，要用which来引导．故选D． 点评 过去分词是非谓语动词的一种，用法很灵活，分为简单式done（表示与谓语同时或几乎同时发生的动作）；完成式having been done（表示先于谓语的动作）．学习时，要把握其用法特征：表示被动和完成．同时还要注意区分现在分词和不定式．

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