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10．As Susan stared at ______ piles of plastic in her recycling bin，______ strong sense of responsibility made her stick to her recycling work．（　�。�
A．不填；不填B．不填； aC．the； aD．the； the

分析 當 Susan 盯著回收站里的塑料堆時，一種強烈的責任感使她將她的回收工作堅持了下來．

解答 答案：C
根據句意可知，第一個空表示特指"回收站里的塑料堆"，故在piles of plastic 之前加定冠詞the；第二個空表示泛指"一種強烈的責任感"，因此在 strong sense of responsibility 前加a；故選C

點評 本題考查了冠詞的用法；做本題時，需要根據句意判斷出名詞或名詞短語的意義所指，即表示泛指還是特指；另外應熟練掌握定冠詞，不定冠詞以及零冠詞的用法及區(qū)別．

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