Tomato, which used to be called “love-apple”, is not but .A. fruit; vegetableB. fruit; a v

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A. fruit; vegetable
B. fruit; a vegetable
(答案→)C. a fruit; a vegetable
D. a fruit; vegetables
解析：本题考查冠词。不定冠词a指某人或某物属于某一种类。句意：西红柿，过去被称之为“爱之苹果”，不是一种水果，也不是一种蔬菜。