做這道冠詞題要小心

做這道冠詞題可要小心了：

I once watched _______ one-act play, which was played by _______ 11-year-old boy.

A. a, a                           B. an, an

C. a, an                          D. an, a

【說明】幾個干擾均有可能誤選。

【分析】最佳答案填C。第一空填 a，因為 one-act 的讀音是以輔音開頭，即第一個音是輔音不是元音；第二空填 an，是因為 11的英文是 eleven，它的第一個音是元音不是輔音。類似以下各題的答案是 C 不是其他：

(1) Before he was arrested, he had taken _______ one-month holiday, and stayed in the country with ________ 18-year-old girl, one of his students.

A. a, a                          B. an, an

C. a, an                        D. an, a

(2) We hired _______ one-eyed man to play in our film, and we gave him _______ 100-pound check for just one minute.

A. a, an                        B. an, a

C. a, a                          D. an, an