Even ________ American may be confused by the number of knives, folks, and spoons beside his plate when he sits down to ________ formal dinner．A.an; theB.an; aC./; aD.an;/
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B解析考查冠词。本题中的American为“美国人”的意思，是可数名词，此处表示泛指任何一个美国人，所以前用an; dinner前有formal修饰表示“某一次正式的宴会”，故用a。