17．_______ he referred to in his article was unknown to the general reader．（　�。�
A．WhatB．ThatC．WhetherD．Where

分析 普通讀者不知道他在文章里提到的東西．

解答 答案：A
根據(jù)題干分析可知，"_______ he referred to in his article"是句子的主語，為主語從句，"referred to"意為"提到，涉及"缺少賓語，故用what．在名詞性從句中，缺少主語、賓語和表語連接詞用what．

點評 本題考查名詞性從句連接詞的使用，考生需掌握名詞性從句的特點，并會分析句子結(jié)構(gòu)，從而判斷連接詞的正確選用．

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