【題目】A study shows that eating one egg _______ day does not appear to raise ________ risk of heart attack.

A. the; a B. a; a

C. a; / D. a; the

【答案】D

【解析】句意：一項研究顯示，每天吃一個雞蛋并不會增加心臟病的危險。第一空用不定冠詞a表示“每一”；第二空用定冠詞the，特指heart attack的危險。故選D。

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