题目内容

6．The cost of organic food is higher than ___________ of conventional food because the organic price tag reflects more closely the true cost of growing the food．（　　）
A．itB．oneC．thisD．that

分析 有机食品的成本比传统食品高得多，因为有机价格标签更真实地反应了种植中的食物的真正成本．

解答 答案：D 考查指示代词用法．根据题意及句子结构，此处要填一个能代替不可数名词cost的代词，that指代同类而不是同一事物．故选D．one也指代同类而不是同一事物，但只能代替可数名词；it指代同类同物；this指邻近的人或物．

点评 解答此类问题，要弄清楚各个代词的词义及用法，根据题意及上下文选择最合适的答案．

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