做这道冠词题要小心

做这道冠词题可要小心了：

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

【说明】几个干扰均有可能误选。

【分析】最佳答案填C。第一空填 a，因为 one-act 的读音是以辅音开头，即第一个音是辅音不是元音；第二空填 an，是因为 11的英文是 eleven，它的第一个音是元音不是辅音。类似以下各题的答案是 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