6．Some people fear that ________ air pollution may bring about changes in _______ weather around the world．（　　）
A．/； theB．the；/C．an； theD．the； a

分析 有些人擔心空氣污染會在世界范圍內帶來天氣變化．

解答 答案：A．Air pollution 是抽象名詞，這里是泛指，前面不加冠詞；weather 這里是特指全球的氣候，前面加定冠詞the．

點評 本題考查冠詞，先明確定冠詞和不定冠詞的用法區(qū)別，再結合句意和一些特殊用法選擇適當答案．

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